Discount! 10% off on all orders
Enjoy 10% off your order—our way of saying welcome! Use code 1NXGPS at checkout to unlock instant savings and start exploring our collection today.
Contact Us
Email address:
Schedule a Professional Consultation Today
Simply fill out the quick form, and our team will promptly respond with the most effective, personalized solution tailored to meet your unique needs and goals.
24/7 support you can trust
Always available to provide reliable solutions whenever you need us.
Our Team is Always Here for Support and Assistance
Frequently asked questions
Everything researchers need to know before ordering — from purity verification and COA access to storage, shipping, and compound comparisons.
Are your peptides for human use?
All products sold by NextGen Peptides Shop are strictly for in vitro research and laboratory use only. They are not intended, approved, or suitable for human consumption, self-administration, veterinary use, or therapeutic application. All purchases are made under this express condition. Researchers are responsible for ensuring compliance with applicable local, state, and federal laws and regulations governing research compounds.
Do you provide Certificates of Analysis (COAs) for all products?
Yes. Every batch of every product is independently tested by a third-party laboratory and issued a Certificate of Analysis. COAs are available directly from each product page on our website, allowing you to verify compound identity, purity percentage, and testing date before ordering. We never share COAs between batches — each lot number has its own documentation.
What is your shipping policy and how fast will my order arrive?
Orders placed before 12 PM ship the same business day. All orders qualify for complimentary free shipping. All orders ship from the USA. We use discreet, temperature-appropriate packaging to ensure compound integrity during transit. Tracking is provided on all orders. International shipping availability may vary — contact us for details.
Do you offer a discount code?
Yes. We run two ongoing discount programs. First-time buyers can apply the code 1NXGPS at checkout to save 10% on their entire first order — no minimum order value applies. Additionally, any customer who pays using cryptocurrency (Bitcoin, Ethereum, USDT, Litecoin, etc.) automatically receives a 15% discount that is applied at checkout without requiring a code. These discounts are also compatible with our regular sale pricing, so you can save significantly on already-discounted items.
What purity standard do your peptides meet?
All compounds are tested by HPLC (High-Performance Liquid Chromatography) and must meet a minimum 99% purity standard before they are listed for sale. HPLC is the gold standard method for peptide purity analysis, providing quantitative assessment of the target compound versus impurities and degradation products. The exact purity figure for each batch is documented in the COA.
What is the difference between Semaglutide, Tirzepatide, and Retatrutide?
These three compounds represent successive generations of metabolic peptide research. Semaglutide is a GLP-1 receptor agonist — it binds to a single receptor involved in appetite and insulin regulation. Tirzepatide is a dual GIP/GLP-1 agonist, adding activation of the glucose-dependent insulinotropic polypeptide receptor, which research suggests provides additive metabolic effects. Retatrutide is a triple agonist that adds glucagon receptor (GCGR) activation on top of the GLP-1 and GIP mechanisms, theoretically increasing energy expenditure alongside appetite modulation. All three are available in multiple dosage sizes on our site.
What is the difference between CJC-1295 with DAC and without DAC?
DAC stands for Drug Affinity Complex — a chemical modification that dramatically extends the half-life of CJC-1295 from minutes to several days by binding to albumin in the bloodstream. CJC-1295 with DAC produces a sustained, continuous elevation of growth hormone-releasing hormone activity. CJC-1295 without DAC (also called Modified GRF 1-29) produces a shorter, pulsatile GH release profile that more closely mimics the body’s natural GH secretion rhythm. Researchers study these separately or in combination with GHRPs like Ipamorelin to investigate different GH secretion patterns.
Do you carry reconstitution supplies?
Yes. We stock BAC Water (Bacteriostatic Water) in 3mg ($10), 5mg ($11), and 10mg ($11) sizes. Bacteriostatic water is the standard diluent for reconstituting lyophilised research peptides, as the 0.9% benzyl alcohol content inhibits microbial growth and extends the usability of the reconstituted solution for research purposes.
How should research peptides be stored?
Lyophilised (freeze-dried) peptides should be stored in a cool, dry place away from light — typically a refrigerator (2–8°C) for short-term storage, or a freezer (-20°C) for longer-term storage. Once reconstituted with BAC water, peptides should be kept refrigerated and used within a reasonable research window as specified by your protocol. Avoid repeated freeze-thaw cycles for reconstituted solutions.