Computed from all 1,272 archived reviews — not written by us.
96% of the 1,272 customers who left a review rated their experience 4 or 5 stars. The subjects they raise most often are shipping speed, ordering experience and product quality. Product quality is the most consistently praised (4.92 average across 336 reviews mentioning it). Ordering experience draws the most mixed feedback, at 4.71. The 27 reviews rated 1 or 2 stars are kept in this archive and can be read using the rating filter.
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Written by the company
Prime Lab Peptides is a research-use-only peptide supplier known for consistent product quality and responsive customer support. We're a team of passionate individuals driven by the mission to provide the highest possible quality on the market — not by profit, but by purpose.
FREE & Fast U.S. Shipping
Orders ship within 12 hours – always free.
We process all orders within 12 hours of confirmation. Every package is shipped directly from our U.S. laboratory via FedEx 2Day Air, with full tracking and protective packaging to ensure fast and secure delivery.
My order arrived in 3 days to Texas, perfectly packaged with everything labeled clearly. I started my research protocol right away, not expecting much in the first week. But by day 4, I noticed my clothes fitting looser around my waist. By day 7, I stepped on the scale and nearly fell over — 14 lbs gone. I literally weighed myself three times to make sure it wasn’t broken.
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Cecil Walters
US ·1 review
I’ve always been skeptical about anything that promises quick results. I’ve tried multiple “miracle” programs, expensive supplements, and fad diets, and I always ended up disappointed. A friend from my gym told me about Prime Lab Peptides and said their Retatrutide was “on another level.” I figured, why not? Worst case, I’d be out a couple hundred bucks.
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Bill Harding
US ·1 review
5 days, 10 lbs gone. That’s all I have to say. Retatrutide from Prime Lab Peptides is the real deal. Order 15940.
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Ashby Lovelace
US ·1 review
Only 7 days into my Reta cycle from Prime Lab Peptides and I’ve already lost 13 lbs. I haven’t seen the scale move this fast in my life. Can’t wait to see where I’ll be in a month.
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Bryan Ashworth
US ·1 review
I did my Retatrutide cycle at the same time as my roommate. I dropped from 280 lbs to 210 lbs and she went from 240 lbs to 180 lbs. Both of us lost 24% and 21% of our starting weight thank you.
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AH
Angelo Hayes
US ·1 review
I ordered Retatrutide from Prime Lab Peptides and the results blew me away. I started at 240 lbs and now I’m sitting at 180 lbs flat — that’s exactly 25% of my body weight gone.
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ALBERT GRAHAM
US ·1 review
I placed my order on a Sunday evening and honestly didn’t expect it to move until Monday. To my surprise, first thing Monday morning I got a friendly email explaining that my item was in the current batch awaiting final third-party lab confirmation. I actually appreciated that they hold products until purity results are in, mine came back at 99.877% and that gave me a lot of confidence. What stood out most was how clear the communication was. Every time I emailed, I got a same-day reply with an update and what to expect next. The tracking number arrived as soon as the carrier scanned it, and I could follow it in real time. The “Pre-Shipment” status showed briefly its normal with USPS and then the next scan confirmed it was on the way 🥰 package landed at my door exactly when they said it would. Even during what seemed like a busy week for them, they still kept me updated without me having to chase them. The quality-first approach and transparency made me feel like my order mattered. I’ve switched most of my business to Prime Lab Peptides now because I trust how they operate. See updated review [https://businessapp.b2b.trustpilot.com/reviews/689eed9731555f8a2ff5fac0/?locale=en-us&businessUnitId=681f7d9aaa0d32686abce823]
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David Watson
US ·1 review
I lost 26 lbs in 8 weeks with their Tirz. My neighbor saw my progress, ordered his own, and now he’s down 31 lbs in just 2 months. Everything came exactly as described and right on time.
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Jerenmy
US ·1 review
Me and my wife both ordered from Prime Lab Peptides. She did the Reta and I did Tirz. In just 10 weeks, I’m down 45 lbs and she’s lost 32 lbs. Everything arrived on time, packed perfectly, and we’ll be back for more research.
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Eddie Foster
US ·1 review
When I contacted them with a question about purity testing, they didn’t just send me a standard answer. They gave me the actual results from the lab and explained the testing process. That’s the kind of transparency that makes me trust a supplier.
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Christopher
US ·1 review
From start to finish the process was simple. Ordering was easy, payment went through without a problem, and I got my tracking within a couple of days. The package was discreet and professionally packed. Product looks great and matches exactly what I ordered.
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Lawson
US ·1 review
I had a shipping issue because of the carrier, not the company. They still went above and beyond to help me get it sorted and made sure I had my product on time. That’s what customer service should be like.
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Joseph
US ·1 review
I was worried a delay would mess up my dosing protocol, but when I reached out, Sofia from support reassured me it wouldn’t affect my progress and that my order would be shipping soon. She was right, and I was able to stay on track without any issues. The product quality is spot on and exactly what they promised.
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Angelo
US ·1 review
I needed my Tirzepatide urgently and was nervous about delays. The team explained they were waiting for the independent purity results before shipping. I respect that because it means they don’t compromise on quality. The order came through exactly when they said it would, and the purity was actually slightly higher than the COA.
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Eli Harper
US ·1 review
I switched from another supplier and wanted to give Prime Lab Peptides a try. My first order happened to land right during the rush from the group post. They explained everything and even told me the exact purity, which was actually higher than on the COA by 0.244%. That kind of honesty and detail gives me confidence in ordering again.
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DAVID HARLOW
US ·1 review
I saw some negative reviews but my experience was completely different. Yes, there was a delay, but it was because of a huge spike in orders after their site was shared in a big group. They gave me a ship date, stuck to it, and my order arrived exactly when they said it would. The purity is the highest I’ve seen on the market. Not a scam, just a small team that takes the time to do things right. See updated review [https://businessapp.b2b.trustpilot.com/reviews/689cd293d3c9f701ba1e5580/?locale=en-us&businessUnitId=681f7d9aaa0d32686abce823]
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Alexander Burke
US ·1 review
I was worried a delay would mess up my dosing protocol, but when I reached out, Sofia from support reassured me it wouldn’t affect my progress and that my order would be shipping soon. She was right, and I was able to stay on track without any issues. The product quality is spot on and exactly what they promised.
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Adam Sloane
US ·1 review
I first found Prime Lab Peptides through a big peptide community group. One of the admins shared their site and it seems like everyone rushed in and completely wiped out their Tirzepatide stock in a few hours. I ordered during that time and there was a bit of a delay, which made me nervous at first. The support team explained that they were waiting for the new batch to be tested before shipping, and everything was already lined up to go out. I just got my package and it’s perfect, sealed and tested at 99.783% purity. Now I see why so many people in the community recommend them.
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Mark
US ·1 review
I order Retatrutide and was pretty suprised how pro everything felt. Shipped from US, came in perfect condition, even had protective pack so nothing get damage. I started my research on a Friday and by next Friday morning I lost 13 lbs. No crazy hunger, no crash just steady change.
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Malachi Roper
US ·1 review
Its hard to explain how it feels seeing that much progress in 1 week after years of barely seeing the scale move. My confidence is coming back, ppl keep telling me I look different and I already ordered again cause I dont wanna lose the momentum.
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How reviews work here
Where these reviews come from
Two sources. 1,272 were left by customers on our former public review profile and rebuilt from the notification we received for each one — the wording, rating and date are the customer's own. The rest were written here since, after an order or directly from this page.
Every review is read before it goes live
A human reads each new review for abuse, defamation, personal data or off-topic content — never for its rating. Every decision is logged with its reason, and a published review appears word for word.
Nothing is filtered by rating
The 19 one-star and 8 two-star reviews are kept and readable through the rating filter. A page that only shows praise is not worth reading.
What is not here
Reviews their authors deleted, and reviews taken down before the former profile closed, are excluded — republishing them would put back online what was removed.
How the rating is computed
A plain average of 1,277 ratings, every review counting once. No weighting, no recency bonus.