What we are
Zyrna Research supplies research peptides to laboratories and qualified researchers in the United States. The catalog is deliberately small: a couple of dozen SKUs across repair, metabolic, growth-hormone, cognitive and longevity compounds, plus the bacteriostatic water to work with them. Everything is sold per vial, as lyophilised powder in a sealed, lot-numbered vial, for laboratory research use only.
What we do
- Source from an established peptide synthesis facility and take delivery with the manufacturer's certificate of analysis for each batch.
- Send lots in stock to an independent laboratory for a third-party test where we can, and publish that report with its verification key on the product page and on the certificates page.
- Hold lyophilised stock at −20°C, protected from light, in the vials it arrived in. Nothing is repackaged, relabelled or re-lotted.
- Pack and post from Nashville, Monday to Friday, with tracking on every order.
- Write the product pages from the published literature, cite it, and say where the human evidence is thin. The guides follow the same rule.
What we do not do
- We do not run analytical assays ourselves. We are a supplier, not a testing laboratory, and we do not publish purity figures we have not been given.
- We do not give dosing guidance, by email or on the site.
- We do not sell anything for human or veterinary use, and we do not ship internationally.
- We do not invent reviews, ratings or testimonials. There are none on this site because none have been collected.
The name
The store launched in July 2026 as nashpeps.com and was renamed Zyrna Research in August 2026. The old domain redirects here. If you were looking for nashpeps, or searched for "Zyrna peptides", this is the same store with the same supplier and the same handling.
Where to start
- The catalog, grouped by compound family with what is in stock.
- Quality and handling: who tests, who does not, and where our figures come from.
- How to read a certificate of analysis, then the certificates themselves.
- Frequently asked questions on shipping, returns and payment.
- Contact: one email address, answered by the person who packs the orders.