{"id":9439,"date":"2026-08-21T10:52:08","date_gmt":"2026-08-21T08:52:08","guid":{"rendered":"https:\/\/dev.jacked.sk\/faq\/"},"modified":"2026-08-21T14:56:21","modified_gmt":"2026-08-21T12:56:21","slug":"faq","status":"publish","type":"page","link":"https:\/\/dev.jacked.sk\/en\/faq\/","title":{"rendered":"FAQ"},"content":{"rendered":"\n  <div id=\"page-header-1062863987\" class=\"page-header-wrapper\">\n  <div class=\"page-title jckd-title light normal-title\">\n\n    \n    <div class=\"page-title-inner container align-center text-center flex-row-col medium-flex-wrap\" >\n              <div class=\"title-wrapper flex-col\">\n          <h1 class=\"entry-title mb-0\">\n            FAQ          <\/h1>\n        <\/div>\n                    <div class=\"title-content flex-col\">\n        <div class=\"title-breadcrumbs pb-half pt-half\"><\/div>      <\/div>\n    <\/div>\n\n     \n<style>\n#page-header-1062863987 .page-title-inner {\n  min-height: 150px;\n}\n<\/style>\n  <\/div>\n    <\/div>\n  \n\n\n\t<section class=\"section\" id=\"section_50615156\">\n\t\t<div class=\"section-bg fill\" >\n\t\t\t\t\t\t\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-478961722\">\n\n\n\t<div id=\"col-95215375\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"accordion pb\">\n\n\t<div id=\"accordion-645093355\" class=\"accordion-item\">\n\t\t<a id=\"accordion-645093355-label\" class=\"accordion-title plain active\" href=\"#accordion-item-what-are-research-peptides?\" aria-expanded=\"true\" aria-controls=\"accordion-645093355-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What are research peptides?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-645093355-content\" class=\"accordion-inner\" style=\"display: block;\" aria-labelledby=\"accordion-645093355-label\">\n\t\t\t\n\n<p><strong>Peptides<\/strong> are short chains of amino acids (usually 2\u201350 amino acids) linked together by peptide bonds. Unlike proteins, which contain hundreds to thousands of amino acids, peptides are smaller molecules\u2014and it is precisely this compactness that makes them exceptionally interesting for scientific research. <\/p>\n<p><strong>Research peptides<\/strong> are synthetically produced compounds that mimic or modify biologically active peptides naturally occurring in the human or animal body. They enable scientists to study biological processes at the cellular and molecular levels\u2014from tissue regeneration and metabolism regulation, through hormone secretion, to neuroprotection. <\/p>\n<p>The research is conducted in the form of <strong>preclinical in vitro studies<\/strong> (test-tube experiments, cell cultures) and <strong>in vivo<\/strong> studies (experiments using animal models). These compounds <strong>are not drugs<\/strong> and are not intended for human use. <\/p>\n<p>\u26a0\ufe0f All peptides on jacked.sk are intended solely for scientific research purposes.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-3721067608\" class=\"accordion-item\">\n\t\t<a id=\"accordion-3721067608-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-are-the-peptides-on-jacked.sk-intended-for?\" aria-expanded=\"false\" aria-controls=\"accordion-3721067608-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What are the peptides on jacked.sk intended for?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-3721067608-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-3721067608-label\">\n\t\t\t\n\n<p>All peptides available on <strong>jacked.sk are intended solely for scientific research purposes<\/strong> (research use only).<\/p>\n<p>Specifically, this means:<br\/><strong class=\"success-color\">\u2713 They are<\/strong> suitable for preclinical in vitro research (cell cultures, laboratory experiments)<br\/><strong class=\"success-color\">\u2713 They are<\/strong> suitable for preclinical in vivo research (animal models)<br\/> <strong class=\"alert-color\">\u2717 They are not<\/strong> drugs or medicinal products<br\/><strong class=\"alert-color\">\u2717 They are not<\/strong> intended for human or veterinary use<br\/><strong class=\"alert-color\">\u2717 They are not<\/strong> dietary supplements or cosmetic products<\/p>\n<p>Sales are permitted only to individuals <strong>over the age of 18<\/strong>. The purchaser bears full responsibility for using the products in accordance with the applicable laws of the country in which they are located. <\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-1733948503\" class=\"accordion-item\">\n\t\t<a id=\"accordion-1733948503-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-is-freeze-drying,-and-why-are-peptides-freeze-dried?\" aria-expanded=\"false\" aria-controls=\"accordion-1733948503-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What is freeze-drying, and why are peptides freeze-dried?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-1733948503-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-1733948503-label\">\n\t\t\t\n\n<p><strong>Lyophilization<\/strong> (freeze-drying) is a process in which a peptide solution is first frozen and then the water is removed by sublimation\u2014the transformation of ice directly into vapor, without passing through the liquid state. The result is a dry, porous powder with a long shelf life. <\/p>\n<p><strong>Why are research peptides freeze-dried?<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Advantage<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Explanation<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Stability<\/strong><\/p>\n<\/td>\n<td>\n<p>Freeze-dried peptides have a shelf life of 24 months or more at \u221220 \u00b0C<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Purity<\/strong><\/p>\n<\/td>\n<td>\n<p>No water = no risk of microbial growth during storage<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Accuracy<\/strong><\/p>\n<\/td>\n<td>\n<p>The powder is easier to measure and reconstitute to the exact concentration<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Transportation<\/strong><\/p>\n<\/td>\n<td>\n<p>Stable during transport without a cold chain (for short periods)<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The lyophilized form is the industry standard for the highest-quality research peptides.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-3614432872\" class=\"accordion-item\">\n\t\t<a id=\"accordion-3614432872-label\" class=\"accordion-title plain\" href=\"#accordion-item-how-should-freeze-dried-peptides-be-stored?\" aria-expanded=\"false\" aria-controls=\"accordion-3614432872-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>How should freeze-dried peptides be stored?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-3614432872-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-3614432872-label\">\n\t\t\t\n\n<p>Proper storage is key to maintaining the purity and activity of the peptide.<\/p>\n<p><strong>Before reconstitution (powder):<br\/><\/strong>- Store at <strong>\u221220 \u00b0C<\/strong> (freezer) \u2014 ideal for long-term storage (12\u201324 months)<br\/>- Alternatively: <strong>2\u20138 \u00b0C<\/strong> (refrigerator) for shorter periods (up to 3 months)<br\/>- Protect from <strong>direct light<\/strong>, moisture, and repeated thawing<br\/>- Do not open the vial until immediately before use<\/p>\n<p><strong>After reconstitution (solution):<br\/><\/strong>- Store at <strong>2\u20138 \u00b0C<\/strong> (refrigerator)<br\/>- Use within <strong>28\u201330 days<\/strong> (when using bacteriostatic water)<br\/>- When using sterile water, use <strong>immediately<\/strong> or within 24 hours<br\/>- Protect from light\u2014peptides may degrade when exposed to UV radiation<\/p>\n<p><strong>Tip:<\/strong> Always let the vial warm to room temperature before opening it to prevent condensation from forming inside.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-1824331374\" class=\"accordion-item\">\n\t\t<a id=\"accordion-1824331374-label\" class=\"accordion-title plain\" href=\"#accordion-item-how-do-you-reconstitute-a-peptide?\" aria-expanded=\"false\" aria-controls=\"accordion-1824331374-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>How do you reconstitute a peptide?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-1824331374-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-1824331374-label\">\n\t\t\t\n\n<p><strong>Reconstitution<\/strong> is the process of dissolving a lyophilized peptide in a suitable solvent. To accurately calculate the amount of water and the resulting concentration, use our <a href=\"https:\/\/dev.jacked.sk\/en\/peptide-reconstitution-calculator\/\" target=\"_blank\" rel=\"noopener\">Dosage Calculator<\/a>. <\/p>\n<p><strong>Step-by-step instructions:<\/strong><\/p>\n<ol>\n<li><strong>Gather the following:<\/strong> sterile or bacteriostatic water, a vial of peptide, and a syringe<\/li>\n<li><strong>Temperature:<\/strong> Allow the peptide vial to warm to room temperature (15\u201330 minutes)<\/li>\n<li><strong>Administering water:<\/strong> Draw the calculated amount of water into a syringe. Insert the needle through the septum and slowly administer the water <strong>along the wall of the vial<\/strong> \u2014do not inject directly onto the powder <\/li>\n<li><strong>Dissolution:<\/strong> Gently swirl the vial \u2014 <strong>DO NOT SHAKE!<\/strong> Vigorous mixing can damage the molecular structure of the peptide<\/li>\n<li><strong>Check:<\/strong> Wait until the powder has completely dissolved\u2014the solution should be clear<\/li>\n<li><strong>Storage:<\/strong> After reconstitution, store at 2\u20138 \u00b0C<\/li>\n<\/ol>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-2361078635\" class=\"accordion-item\">\n\t\t<a id=\"accordion-2361078635-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-is-the-difference-between-sterile-and-bacteriostatic-water?\" aria-expanded=\"false\" aria-controls=\"accordion-2361078635-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What is the difference between sterile and bacteriostatic water?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-2361078635-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-2361078635-label\">\n\t\t\t\n\n<p>Both are suitable for peptide reconstitution, but they differ in composition and shelf life after opening.<\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Property<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Sterile Water (WFI)<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Bacteriostatic water<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Ingredients<\/strong><\/p>\n<\/td>\n<td>\n<p>Pure water, no preservatives<\/p>\n<\/td>\n<td>\n<p>Water + 0.9% benzyl alcohol<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Usage<\/strong><\/p>\n<\/td>\n<td>\n<p>Disposable<\/p>\n<\/td>\n<td>\n<p>Multi-dose (up to 28 days)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>After opening<\/strong><\/p>\n<\/td>\n<td>\n<p>Use immediately<\/p>\n<\/td>\n<td>\n<p>Store at 2\u20138 \u00b0C; use within 28 days<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Suitable for<\/strong><\/p>\n<\/td>\n<td>\n<p>Small quantities \/ one-time research<\/p>\n<\/td>\n<td>\n<p>Long-term research protocols<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Microbial Protection <\/strong><\/p>\n<\/td>\n<td>\n<p>None after opening<\/p>\n<\/td>\n<td>\n<p>0.9% benzyl alcohol inhibits bacterial growth<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Recommendation:<\/strong> For most research peptides, <strong>bacteriostatic water<\/strong> is <strong>the preferred choice<\/strong> \u2014it extends the stability of the prepared solution and reduces the risk of contamination in multi-dose research protocols. Both are available in the <a href=\"https:\/\/dev.jacked.sk\/en\/kategoria-produktu\/product-preparation\/\" target=\"_blank\" rel=\"noopener\">Laboratory Supplies<\/a> section. <\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-1494138833\" class=\"accordion-item\">\n\t\t<a id=\"accordion-1494138833-label\" class=\"accordion-title plain\" href=\"#accordion-item-how-long-do-the-peptides-remain-stable-after-reconstitution?\" aria-expanded=\"false\" aria-controls=\"accordion-1494138833-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>How long do the peptides remain stable after reconstitution?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-1494138833-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-1494138833-label\">\n\t\t\t\n\n<p>The stability of the reconstituted peptide depends on the solvent used and the storage conditions:<\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Terms and Conditions<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Stability<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Bacteriostatic water + refrigerator (2\u20138 \u00b0C)<\/p>\n<\/td>\n<td>\n<p><strong>28\u201330 days<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Sterile water + refrigerator (2\u20138 \u00b0C)<\/p>\n<\/td>\n<td>\n<p><strong>24\u201372 hours<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Any solvent + room temperature<\/p>\n<\/td>\n<td>\n<p><strong>At most a few hours<\/strong> (not recommended)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Freezing the solution (\u221220 \u00b0C)<\/p>\n<\/td>\n<td>\n<p>Possible\u2014 <strong>do not defrost repeatedly<\/strong> \u2014deterioration<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Practical recommendations:<\/strong><\/p>\n<ul>\n<li>Always use bacteriostatic water for reuse<\/li>\n<li>Label the vial with the date of reconstitution<\/li>\n<li>Store light-sensitive peptides (e.g., Melanotan-2) wrapped in aluminum foil<\/li>\n<li>If you have any doubts about stability, proceed with a new reconstitution.<\/li>\n<\/ul>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-3144681819\" class=\"accordion-item\">\n\t\t<a id=\"accordion-3144681819-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-is-98%+-purity,-and-why-does-it-matter?\" aria-expanded=\"false\" aria-controls=\"accordion-3144681819-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What is 98%+ purity, and why does it matter?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-3144681819-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-3144681819-label\">\n\t\t\t\n\n<p><strong>Peptide purity<\/strong> is expressed as the percentage of the active compound (target peptide) in the total mass of the sample. The remainder may consist of synthesis byproducts, residual reagents, or impurities. <\/p>\n<p><strong>Why is a purity of \u226598% important?<\/strong><\/p>\n<ul>\n<li><strong>Research reproducibility:<\/strong> Contaminants can affect experimental results, making it difficult to reproduce the results and compare them with other studies<\/li>\n<li><strong>Data Quality:<\/strong> Research results are valid only if the tested substance corresponds to the declared compound<\/li>\n<li><strong>Safety during handling:<\/strong> Lower purity = potentially unknown contaminants in the laboratory<\/li>\n<\/ul>\n<p><strong>How do we verify purity?<\/strong><\/p>\n<p>Every batch of peptides at jacked.sk is verified using <strong>HPLC<\/strong> (High-Performance Liquid Chromatography), supplemented as needed by <strong>mass spectrometry (MS)<\/strong> to confirm the molecule\u2019s identity. The results are documented in <strong>a Certificate of Analysis (COA)<\/strong>, which is available for each product. <\/p>\n<p><strong>Comparison of purity classes:<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Purity<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Classification<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Suitability for Research<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\u226598%<\/p>\n<\/td>\n<td>\n<p>Research Class \u2014 Premium<\/p>\n<\/td>\n<td>\n<p class=\"success-color\">\u2713 Fully suitable<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>95\u201397%<\/p>\n<\/td>\n<td>\n<p>Research Class \u2014 Standard<\/p>\n<\/td>\n<td>\n<p class=\"success-color\">\u2713 Suitable<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>85\u201394%<\/p>\n<\/td>\n<td>\n<p>Technical Class<\/p>\n<\/td>\n<td>\n<p class=\"alert-color\">\u2717 Not suitable for sensitive research<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>&lt;85%<\/p>\n<\/td>\n<td>\n<p>Raw product<\/p>\n<\/td>\n<td>\n<p class=\"alert-color\">\u2717 Inappropriate<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-1102147792\" class=\"accordion-item\">\n\t\t<a id=\"accordion-1102147792-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-is-a-coa-(certificate-of-analysis)?\" aria-expanded=\"false\" aria-controls=\"accordion-1102147792-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What is a COA (Certificate of Analysis)?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-1102147792-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-1102147792-label\">\n\t\t\t\n\n<p><strong>COA (Certificate of Analysis)<\/strong> \u2014 Certificate of Analysis \u2014 is a document issued by <strong>an independent analytical laboratory<\/strong> that confirms the identity, purity, and composition of a specific batch of a peptide.<\/p>\n<p><strong>What the COA includes:<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Data<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Description<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Compound Name<\/strong><\/p>\n<\/td>\n<td>\n<p>Chemical name, abbreviation, CAS number<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Lot Number<\/strong><\/p>\n<\/td>\n<td>\n<p>Unique batch identifier<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Purity (%)<\/strong><\/p>\n<\/td>\n<td>\n<p>Results of the HPLC Analysis<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Testing Method<\/strong><\/p>\n<\/td>\n<td>\n<p>HPLC, MS (mass spectrometry)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Molecular weight<\/strong><\/p>\n<\/td>\n<td>\n<p>Identification of a Compound<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Date of Analysis<\/strong><\/p>\n<\/td>\n<td>\n<p>When was the batch tested?<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Laboratory signature \/ stamp<\/strong><\/p>\n<\/td>\n<td>\n<p>Document Authentication<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Where can you find the COA on jacked.sk?<br\/><\/strong>On the <a href=\"https:\/\/dev.jacked.sk\/en\/certificates-of-analysis\/\" target=\"_blank\" rel=\"noopener\">Certificates of Analysis<\/a> (COA Vault) page\u2014directly on each product page in<strong>the \u201cDocuments\u201d<\/strong>section<\/p>\n<p><strong>Important:<\/strong> Always verify that the lot number on the vial matches the lot number on the COA. This is the basis for verifying quality. <\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-1392675589\" class=\"accordion-item\">\n\t\t<a id=\"accordion-1392675589-label\" class=\"accordion-title plain\" href=\"#accordion-item-is-it-legal-to-buy-peptides?\" aria-expanded=\"false\" aria-controls=\"accordion-1392675589-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>Is it legal to buy peptides?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-1392675589-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-1392675589-label\">\n\t\t\t\n\n<p><strong>In Slovakia and the Czech Republic, the purchase of research peptides is legal<\/strong> provided they are intended solely for scientific research purposes.<\/p>\n<p>Most research peptides <strong>are not classified<\/strong> as controlled substances under Slovak Act No. 139\/1998 Z. z. on Narcotic and Psychotropic Substances or Czech Act No. 167\/1998 Sb.   <\/p>\n<p><strong>Important Notices:<br\/><\/strong>- Legislation varies from country to country\u2014the buyer is responsible for verifying the applicable regulations in their country before placing an order<br\/>- Certain compounds (e.g., Melanotan-2) are subject to specific regulations in certain EU countries<br\/>- Peptides <strong>are not approved as medications<\/strong> in the EU \u2014 selling them as medications would be illegal<br\/>- Exports to certain countries outside the EU may be subject to customs restrictions<\/p>\n<p>If you are unsure about the laws in your country, we recommend consulting a legal advisor or the relevant regulatory authority.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-3702168607\" class=\"accordion-item\">\n\t\t<a id=\"accordion-3702168607-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-is-the-delivery-time?\" aria-expanded=\"false\" aria-controls=\"accordion-3702168607-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What is the delivery time?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-3702168607-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-3702168607-label\">\n\t\t\t\n\n<p><strong>Slovakia and the Czech Republic:<\/strong> The standard delivery time is <strong>3\u20135 business days<\/strong> from the date the order is confirmed.<\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Landscape<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Delivery Time<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Note<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Slovakia<\/p>\n<\/td>\n<td>\n<p>3\u20135 business days<\/p>\n<\/td>\n<td>\n<p>Shipped within 48 hours<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Czech Republic<\/p>\n<\/td>\n<td>\n<p>3\u20135 business days<\/p>\n<\/td>\n<td>\n<p>Shipped within 48 hours<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>EU (other countries)<\/p>\n<\/td>\n<td>\n<p>5\u201310 business days<\/p>\n<\/td>\n<td>\n<p>It depends on the country<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Additional shipping information:<br\/><\/strong>- Orders <strong>are typically shipped within 48 hours<\/strong> on business days<br\/>- Shipping is <strong>discreet<\/strong> \u2014the package\u2019s contents are not listed on the outside<br\/>- Peptides are packaged with a cooling element to maintain the cold chain during shipping<br\/>- Package tracking is available after shipment<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-4177544103\" class=\"accordion-item\">\n\t\t<a id=\"accordion-4177544103-label\" class=\"accordion-title plain\" href=\"#accordion-item-are-there-any-side-effects-associated-with-peptides-in-research?\" aria-expanded=\"false\" aria-controls=\"accordion-4177544103-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>Are there any side effects associated with peptides in research?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-4177544103-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-4177544103-label\">\n\t\t\t\n\n<p>Since the peptides available on jacked.sk are intended exclusively for <strong>preclinical research<\/strong> (in vitro and in vivo in animal models), we are unable to provide information on side effects associated with human use\u2014nor is such use the purpose of our sales.<\/p>\n<p><strong>From the scientific literature (preclinical research):<\/strong><\/p>\n<p>Side effect profiles vary significantly depending on the specific compound:<\/p>\n<ul>\n<li><strong>GH-releasing peptides<\/strong> (GHRP-2, Ipamorelin): Effects on cortisol, prolactin, and appetite levels observed in animal studies<\/li>\n<li><strong>GLP-1\/GIP agonists<\/strong> (tirzepatide, retatrutide): Gastrointestinal reactions observed in clinical studies (nausea, decreased appetite)<\/li>\n<li><strong>Melanocortin peptides<\/strong> (Melanotan-2, PT-141): Studies have examined their effects on pigmentation, blood pressure, and nausea<\/li>\n<li><strong>Regenerative peptides<\/strong> (BPC-157, TB-500): In preclinical studies, they have demonstrated a favorable safety profile in animal models<\/li>\n<\/ul>\n<p>\u26a0\ufe0f This information is derived from scientific literature and is intended solely for research purposes. <strong>We do not provide medical advice.<\/strong> For the latest scientific literature, we recommend the <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\" target=\"_blank\" rel=\"noopener\">PubMed database (pubmed.ncbi.nlm.nih.gov)<\/a>.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-54957987\" class=\"accordion-item\">\n\t\t<a id=\"accordion-54957987-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-is-the-difference-between-peptides,-proteins,-and-hormones?\" aria-expanded=\"false\" aria-controls=\"accordion-54957987-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What is the difference between peptides, proteins, and hormones?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-54957987-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-54957987-label\">\n\t\t\t\n\n<p>These terms are often confused\u2014here is a clear distinction:<\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p> <\/p>\n<\/td>\n<td>\n<p><strong>Peptide<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Protein<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Hormone<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Definition<\/strong><\/p>\n<\/td>\n<td>\n<p>A chain of 2\u201350 amino acids<\/p>\n<\/td>\n<td>\n<p>A chain of 50+ amino acids (complex structure)<\/p>\n<\/td>\n<td>\n<p>Signal molecule (may be a peptide, steroid, or amine)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Size<\/strong><\/p>\n<\/td>\n<td>\n<p>Small molecule<\/p>\n<\/td>\n<td>\n<p>Large molecule<\/p>\n<\/td>\n<td>\n<p>Miscellaneous<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Examples<\/strong><\/p>\n<\/td>\n<td>\n<p>BPC-157, Ipamorelin<\/p>\n<\/td>\n<td>\n<p>Insulin (51 amino acids), GH (191 amino acids)<\/p>\n<\/td>\n<td>\n<p>Insulin, cortisol, testosterone<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Origin<\/strong><\/p>\n<\/td>\n<td>\n<p>Synthetic or natural<\/p>\n<\/td>\n<td>\n<p>Mostly natural<\/p>\n<\/td>\n<td>\n<p>Mostly natural<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Important differences compared to steroids:<\/strong><\/p>\n<p>Research peptides <strong>are not steroids<\/strong>. Steroids (e.g., testosterone, cortisol) are lipid molecules derived from cholesterol\u2014they function on a completely different principle than peptides. Peptides are amino acid chains without a steroid structure.  <\/p>\n<p>Some peptides (e.g., Ipamorelin, GHRP-2) have been shown in research to stimulate growth hormone secretion, but they <strong>are neither growth hormone<\/strong> nor steroids themselves.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-188448228\" class=\"accordion-item\">\n\t\t<a id=\"accordion-188448228-label\" class=\"accordion-title plain\" href=\"#accordion-item-how-should-i-choose-a-peptide-for-my-research-project?\" aria-expanded=\"false\" aria-controls=\"accordion-188448228-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>How should I choose a peptide for my research project?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-188448228-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-188448228-label\">\n\t\t\t\n\n<p>The choice depends on <strong>the area of research<\/strong> you are focusing on. At jacked.sk, we offer peptides categorized into 7 research areas: <\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Research Area<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Typical Compounds<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Category<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Tissue Regeneration and Healing<\/strong><\/p>\n<\/td>\n<td>\n<p>BPC-157, TB-500, GHK-Cu, KPV<\/p>\n<\/td>\n<td>\n<p><a href=\"https:\/\/dev.jacked.sk\/en\/kategoria-produktu\/recovery-rehabilitation\/\" target=\"_blank\" rel=\"noopener\">Research on Regeneration<\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Metabolism and Adipose Tissue<\/strong><\/p>\n<\/td>\n<td>\n<p>Tirzepatide, Retatrutide, Cagrilintide, AOD-9604<\/p>\n<\/td>\n<td>\n<p><a href=\"https:\/\/dev.jacked.sk\/en\/kategoria-produktu\/research-on-weight-loss-and-metabolism\/\" target=\"_blank\" rel=\"noopener\">Research on Weight Loss and Metabolism<\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Growth Hormone and Muscle Mass<\/strong><\/p>\n<\/td>\n<td>\n<p>Ipamorelin, CJC-1295, GHRP-2, Hexarelin<\/p>\n<\/td>\n<td>\n<p><a href=\"https:\/\/dev.jacked.sk\/en\/kategoria-produktu\/fitness-bodybuilding-en\/\" target=\"_blank\" rel=\"noopener\">Research on Muscle Mass Growth<\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Longevity and Cellular Aging<\/strong><\/p>\n<\/td>\n<td>\n<p>Epithalon, MOTS-c, GHK-Cu<\/p>\n<\/td>\n<td>\n<p><a href=\"https:\/\/dev.jacked.sk\/en\/kategoria-produktu\/research-on-longevity-and-the-slowing-of-aging\/\" target=\"_blank\" rel=\"noopener\">Research on Longevity<\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Sleep Cycles<\/strong><\/p>\n<\/td>\n<td>\n<p>DSIP, Selank<\/p>\n<\/td>\n<td>\n<p><a href=\"https:\/\/dev.jacked.sk\/kategoria-produktu\/vyskum-spanku\/\" target=\"_blank\" rel=\"noopener\">Sleep Research<\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Cognitive Functions<\/strong><\/p>\n<\/td>\n<td>\n<p>Semax, Selank<\/p>\n<\/td>\n<td>\n<p><a href=\"https:\/\/dev.jacked.sk\/en\/kategoria-produktu\/research-on-cognitive-functions\/\" target=\"_blank\" rel=\"noopener\">Research on Cognitive Functions<\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Pigmentation and Sexual Health<\/strong><\/p>\n<\/td>\n<td>\n<p>Melanotan-2, PT-141<\/p>\n<\/td>\n<td>\n<p><a href=\"https:\/\/dev.jacked.sk\/en\/kategoria-produktu\/tanning-and-sexual-health-research\/\" target=\"_blank\" rel=\"noopener\">Research on Sun Exposure and Sexual Health<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>If you have any further questions regarding the selection of compounds for your research, please feel free to contact us via <a href=\"https:\/\/dev.jacked.sk\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">the contact form<\/a>.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\n<\/div>\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-957967184\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1306924858\" class=\"text pt pb-half alert dark col round\">\n\t\t\n\n<p>\u26a0\ufe0f <strong>Warning:<\/strong> All products available on jacked.sk are intended exclusively for <strong>scientific research purposes<\/strong>. They are not drugs, medications, dietary supplements, or cosmetic products. They are not intended for human or veterinary use. Sales are permitted only to individuals over the age of 18. The information provided in this FAQ is for informational purposes only and does not constitute medical advice.    <\/p>\n\t\t\n<style>\n#text-1306924858 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_50615156 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-9439","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/dev.jacked.sk\/en\/wp-json\/wp\/v2\/pages\/9439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dev.jacked.sk\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dev.jacked.sk\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dev.jacked.sk\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dev.jacked.sk\/en\/wp-json\/wp\/v2\/comments?post=9439"}],"version-history":[{"count":0,"href":"https:\/\/dev.jacked.sk\/en\/wp-json\/wp\/v2\/pages\/9439\/revisions"}],"wp:attachment":[{"href":"https:\/\/dev.jacked.sk\/en\/wp-json\/wp\/v2\/media?parent=9439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}