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Frequently Asked Questions
Everything you want to know about our peptides, shipping and ordering.
Research peptides are synthetically produced peptide sequences used exclusively in scientific research and laboratory analysis. They are used in fields such as molecular biology, biochemistry, and pharmaceutical research—not for human use.
All our peptides have a purity of at least ≥ 98.9 %, which is verified using HPLC analysis (High Performance Liquid Chromatography). High purity is crucial for reproducible results in scientific experiments.
The identity of our peptides is determined by means of LC-MS analysis (Liquid Chromatography Mass Spectrometry) confirmed. This allows for the unambiguous identification of molecular mass and correct peptide sequence.
No. Our products are exclusively for scientific research purposes intended for and not approved for human or veterinary use.
All orders are processed directly from Germany Shipped — discreetly and securely. We ship with DHL, DPD, Hermes and UPS.
Within Germany, we usually deliver to 2–3 working days. It takes longer to get to other EU countries. 3–7 working days.
Orders with a merchandise value of 100 € (DE) They are delivered free of charge. For deliveries within Europe, a shipping fee of €9.90 applies.
We accept Credit card, Google Pay and Apple Pay as well as a variety of Cryptocurrencies.
Lyophilized peptides should be used when -20 °C Store in a dry environment (long-term). Short-term storage at 2–8 °C is also possible. Further details can be found in our [link to relevant documentation]. Storage instructions.
Yes. Lyophilized peptides must be reconstituted with sterile bacteriostatic water (BAC water) before use. BAC water is available from us in the Accessories section available.
The three peptides differ in their mechanism of action: Semaglutide activates one receptor (GLP-1), Tirzepatide two (GLP-1 + GIP), and Retatrutide three (GLP-1 + GIP + glucagon). In clinical studies, Retatrutide showed the strongest effect (~24% reduction), followed by Tirzepatide (~22.5%) and Semaglutide (~15%). Detailed information: What is retatrutide? · What is tirzepatide? · What is semaglutide?
According to published Phase 2/3 data: Retatrutide with ~24 % body weight reduction (TRIUMPH, 48 weeks), followed by Tirzepid with ~22.5 % (SURMOUNT-1, 72 weeks) and Semaglutide with ~15 % (STEP-1, 68 weeks). All three are available from Reta24 in HPLC-verified quality.
GLP-1 (glucagon-like peptide-1) is a naturally occurring incretin hormone. GLP-1 agonists mimic its effects: they promote insulin secretion, inhibit glucagon, and slow gastric emptying. The result: reduced appetite and stabilized blood sugar. All our active ingredients (semaglutide, tirzepatide, retatrutide) contain a GLP-1 component.
Slowly inject sterile BAC water against the inner wall of the vial and gently swirl—do not shake. The typical concentration is 1–2 mg/ml. You can find step-by-step instructions in our [link to instructions]. Instructions for use.