Peptide vendor warning
Excellent
See all 16 reviews
5
44%
4
13%
3
19%
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25%
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Community Warning!
FDA issued a formal warning letter (Dec 10, 2024, #695156) to Prime Vitality, Inc. dba Prime Peptides for marketing semaglutide, tirzepatide, and retatrutide as unapproved new drugs despite research-use-only labeling — part of a same-day multi-vendor FDA sweep. Separately, its posted Certificates of Analysis come from a mix of labs of inconsistent accreditation (Janoshik Analytical alongside several lesser-known labs), and there are reports of defective/gelled vials and partial shipments of out-of-stock items.
Community Warning!
FDA issued a formal warning letter (Dec 10, 2024, #695156) to Prime Vitality, Inc. dba Prime Peptides for marketing semaglutide, tirzepatide, and retatrutide as unapproved new drugs despite research-use-only labeling — part of a same-day multi-vendor FDA sweep. Separately, its posted Certificates of Analysis come from a mix of labs of inconsistent accreditation (Janoshik Analytical alongside several lesser-known labs), and there are reports of defective/gelled vials and partial shipments of out-of-stock items.
Prime Peptides Overview
Prime Peptides is operated by Prime Vitality, Inc. (Santa Barbara, CA), a WordPress/WooCommerce research-use-only (RUO) peptide vendor founded in July 2024. The company publishes per-batch Certificates of Analysis with verification keys for Janoshik-tested batches, but received a formal FDA warning letter in December 2024 for marketing GLP-1 peptides (semaglutide, tirzepatide, retatrutide) as unapproved new drugs despite RUO labeling.
public coas
per-batch coa
ships to us
What customers love about Prime Peptides
Our top-rated vendor
Our rankings are based solely on third-party lab testing rigor, COA transparency, and pricing, no paid placements, no affiliate influence. We update this list as new data comes in.
Based on current scores, this vendor ranks highest across those criteria.
What customers dislike about Prime Peptides
Reviews shaping this summary
Anonymous
Sep 8, 2025
Vial won't draw, no refund or exchange
Do not use Prime Peptides, my vial will not draw out, will not refund or exchange - useless, horrible customer service - wasted money! Find another provider.
Anonymous
Sep 18, 2025
Solid results, great service, great price
Very good experience so far I ordered the 50mg Retatrutide and the BAC water. Solid results so far. Had being using Tirzepatide from a compound pharmacy befor…
Anonymous
Nov 1, 2025
Tirzepatide stronger than another vendor
I am curious if anyone has sent in to janoshik on their own. The reason being is yes i have tried their stuff, I order from them fairly often. But my wife is on…
Anonymous
Jan 8, 2026
Last order didn't match test certificates
There were good for a few months, but the last order I got did not match up in the test certification system they use on the site and they do not seem to be res…
Anonymous
Apr 6, 2026
A year without a bad experience
I've been micro dosing on Reta to manage inflammation for multiple autoimmune diseases I have. First off, it has changed my life, I feel like I have it back. I'…
Is Prime Peptides legit? Check its lab reports
Scam vendors rarely show lab work. Prime Peptides links 12 COAs, 12 from independent labs and 1 with no purity reported. Check the lot numbers and purity below before you order.
| Product | Size | Purity | Lot |
|---|---|---|---|
GLP-1 (Semaglutide) | 15mg | 99.791% COA | 11092025SM |
GLP-1 (Semaglutide) | 10mg | 99.524% COA | 1052026SM |
GLP-1 (Semaglutide) | 5mg | 99.681% COA | 3272026SM |
GLP-2 (Tirzepatide) | 60mg | 99.895% COA | 01266026TR |
GLP-2 (Tirzepatide) | 30mg | 99.92% COA | 26070201 |
GLP-2 (Tirzepatide) | 10mg | 99.8% COA | 3122026TR |
GLP-3 (Retatrutide) | 30mg | 99.97% COA | 26071002 |
Klow Blend | 80mg | No purity reported | 4022026KLO |
Showing the 8 most recent of 12 COAs. Purity is the percentage printed on the certificate, not a PeptideMind measurement.
Company details
Written by the company
Prime Peptides is operated by Prime Vitality, Inc. (Santa Barbara, CA), a WordPress/WooCommerce research-use-only (RUO) peptide vendor founded in July 2024. The company publishes per-batch Certificates of Analysis with verification keys for Janoshik-tested batches, but received a…
Contact info
CA, US
Testing standards
In-house HPLC
Mass spectrometry
COA publicly available
Per-batch COA
Third-party labs
Accepted methods
credit card
Shipping & pricing
Ships to
mid pricing tier
Last verified
August 2, 2026
Frequently asked questions
Is Prime Peptides a legitimate peptide vendor?
Based on 61 reviews on PeptideMind, Prime Peptides holds a 4.6/5 overall rating. Prime Peptides provides publicly available certificates of analysis (COAs). As with any research chemical vendor, we recommend reviewing available lab documentation and community feedback before purchasing.
Does Prime Peptides provide certificates of analysis (COAs)?
Yes, Prime Peptides makes COAs publicly available for their products on a per-batch basis. Their testing includes: mass spectrometry, per-batch COAs, third-party testing via Janoshik Analytical, Horizon Analytical, Freedom Diagnostic, Accumark Labs, Vanguard Laboratory, Bioviridian.
What countries does Prime Peptides ship to?
Prime Peptides ships to: US. Free shipping is offered on orders over $150.00.
What payment methods does Prime Peptides accept?
Prime Peptides accepts the following payment methods: Credit Card.
Where is Prime Peptides based and when were they founded?
Prime Peptides is founded in 2024, based in CA, US.
Prime Peptides reviews
Reviews sourced from across the web and written by real users on PeptideMind. Gathered from popular platforms and our own community so you get the full picture.
We screen reviews, but don't fact-check them
Reviewers' opinions are their own. We may mark a review Verified when we can confirm a real transaction occurred, but we don't validate individual claims. All reviews are screened by automated software to catch guideline violations — flag anything we may have missed.
Anonymous
Sep 8, 2025
Vial won't draw, no refund or exchange
Do not use Prime Peptides, my vial will not draw out, will not refund or exchange - useless, horrible customer service - wasted money! Find another provider.
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Anonymous
Sep 18, 2025
Solid results, great service, great price
Very good experience so far I ordered the 50mg Retatrutide and the BAC water. Solid results so far. Had being using Tirzepatide from a compound pharmacy before, paying way more for a vial of 40mg. Me and my wife are both felling the effects and they are positive, just like the Tirze from the compound pharmacy. Great costumer service as well. And the price is absurd how good it’s. I’m definitely a costumer. Can’t compare much with other name companies like Peptide Science which was my order big option. But I will try to get one vial from them to see what happen in the future. But I’m definitely enjoying Prime Peptides.
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Anonymous
Nov 1, 2025
Tirzepatide stronger than another vendor
I am curious if anyone has sent in to janoshik on their own. The reason being is yes i have tried their stuff, I order from them fairly often. But my wife is on tirzepatide. We usually get that from prime peptides, when I give it to her from eros she says its not as strong. But always happy on prime. Thinking about sending eros in to janoshik myself unless anyone can confirm personally.
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Anonymous
Jan 8, 2026
Last order didn't match test certificates
There were good for a few months, but the last order I got did not match up in the test certification system they use on the site and they do not seem to be responding in my inquires about it. I not using them any longer unless they respond back with testing numbers that work.
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Anonymous
Apr 6, 2026
A year without a bad experience
I've been micro dosing on Reta to manage inflammation for multiple autoimmune diseases I have. First off, it has changed my life, I feel like I have it back. I've been ordering from Prime Peptides and Pura Peptides and just ordered from NorthWest Peptides. All 3 disclose testing information and all are located in the USA. If any of you have feed back on any three of these providers I'd love to hear about it. After a year of using them, I haven't had a bad experience
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Anonymous
Apr 6, 2026
It works, but made me very sick
Well, I definitely think it worked like I couldn’t eat anything and I just pinned once 10 units but I got so unbearably sick like I have never been before for about 9 days and that didn’t outweigh the benefits Fo me. But it works
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Anonymous
Apr 27, 2026
Way too expensive
Way too expensive. Move on
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Anonymous
Jun 5, 2026
No effect, but refunded quickly
Totally bunk. Ordered r3ta twice and absolutely no effect. The only thing good is that after my second order of doing absolutely nothing, I wrote and complained and they refunded me quickly.
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Anonymous
Jun 29, 2026
Lost 20 pounds, legit peps
I ordered reta from prime n only got 2 viles of 10 mg n I lost 20 pounds in one and half months so my experience they got legit peps
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Anonymous
Jul 23, 2026
Good prices and fast shipping, but zero results
I’ve bought a lot from them glp1 and glp2. Zero results over a year. I lost a lot on actual prefilled dr prescribed pens. Good prices , fast shipping I think it’s just placebo. I’m no rookie.
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Anonymous
Aug 1, 2026
Three orders, great service, tested 97%+
There was a few sellers pretending to be Prime (which is also owned by the same company as Cellupep, & Primeway) I've ordered 3 times now. Ive had great service and my lab subjects are all telling me they are finally losing weight. Tested (2) products and both came back 97%+. My only concern was that some 10-v kits were filled 3 months prior to my order. (It was June, the kit said made in March) but They were unpopular peps. Try them out.
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Anonymous
Excellent customer service and packaging
Excellent customer service and excellent packaging. Great products, super fast delivery.
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Anonymous
Partial shipment with no timeframe given
They let me order items that were later marked out of stock, then shipped a partial order with a card noting the remaining items were unavailable and no clear delivery timeframe.
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Anonymous
Vials gelled up, but replaced promptly
I ordered 3 vials that all gelled up. The company was responsive and replaced all 3 defective vials.
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Anonymous
Real legitimate products, fast shipping
Real legitimate products, easy to access calculator guides, and fast shipping.
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Anonymous
Amazing purity, incredible shipping and service
Amazing purity, incredible shipping and customer service. I've been a customer for over 2 years without a single complaint.
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