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Review summary

Created with AI, based on recent reviews

Evaluating 252 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the high quality of the products, noting their effectiveness and the company's transparency through readily available Certificates of Analysis (COAs). Many appreciate the fast delivery and efficient order processing, often receiving their items quickly. The customer service is frequently highlighted as excellent, with people commending the helpfulness and responsiveness of the support team. However, some people were dissatisfied with the product quality, specifically mentioning issues with certain peptides not working as expected or arriving with packaging concerns like shattered powder or poorly applied labels. A few customers also reported dissatisfaction with the company's response to these quality concerns, feeling that their issues were not adequately addressed.

What people talk about most

Product

Customers had positive experiences with product quality. Many reviewers praise the high quality and... See more

Delivery service

Reviewers consistently express satisfaction with the delivery service. Customers frequently praise the fast... See more

Quality

Reviewers highlight positive aspects of quality. Many customers consistently praise the high quality of the... See more

Order

Users describe positive interactions with order. Many customers report having ordered multiple times and... See more

Customer service

People report positive experiences with customer service. Many customers highlight the responsiveness,... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Reasonably price and high quality peptides , fast shipping. Ive been shopping with certified pep for a couple years now, and I've had nothing but a great experience and results Thank you

Rated 5 out of 5 stars

I have been a customer of Peptira for months now, and they have done nothing but continue to innovate the space and improve every chance they get. Changing the research game one idea at a time. All in... See more

Rated 5 out of 5 stars

I am giving the company a 5 star. The website was very easy to navigate. I was very please with the fast delivery. I have been searching for an amino acid to give me a bust of energy, clear mind a... See more

Rated 5 out of 5 stars

Quality product and decent price. Been buying peptides from peptira for about 6 months now probably spent about 5 grand here had one order issue and they handled it right away. I also won the 12 days... See more


Company details

  1. #17 of 28 best companies in Biochemical Supplier

Written by the company

Peptira is a U.S.-based peptide and research supply company built on one simple mission — to deliver the highest-purity peptides, research chemicals, and laboratory materials with complete transparency and integrity. Every product is HPLC-verified for ≥97% purity and traceable to a third-party Certificate of Analysis (COA) so you always know exactly what you’re getting. Our testing partners include respected independent labs, ensuring accurate results, verified purity, and full transparency. We’re proud to be a researcher-driven company that puts quality and service first. From fast, reliable shipping to responsive customer support, Peptira has earned the trust of thousands of researchers across the United States. We believe in honesty, community, and consistent quality — not hype. Whether you’re buying a single vial or restocking your entire lab, Peptira is committed to providing authentic, lab-tested research materials you can depend on. Why researchers choose Peptira: ✅ U.S.-based fulfillment and customer support ✅ COAs and purity reports for every batch ✅ Transparent business practices ✅ Same-day or next-day shipping on most orders ✅ Trusted by researchers nationwide If you’re looking for a trusted peptide supplier in the USA, or searching where to buy research peptides online, Peptira stands apart for quality, reliability, and integrity.


Contact info

4.6

Excellent

TrustScore 4.5 out of 5

247 reviews

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Replied to 62% of negative reviews

Typically replies within 24 hours

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Rated 5 out of 5 stars

I HIGHLy recommend the product, so far so good.

I am giving the company a 5 star.
The website was very easy to navigate.
I was very please with the fast delivery. I have been searching for an amino acid to give me a bust of energy, clear mind and overall to make me feel great. The NAD+ did exactly what I was looking for ... the quality of their products is superior than others.

April 1, 2026
Unprompted review
Rated 2 out of 5 stars

Ordered Reta 2 times it worked the…

Ordered Reta 2 times it worked the first time and the 2nd I felt absolutely nothing I thought it was maybe just a coincidence so I ordered tirz 20mg felt absolutely nothing there COA was months old and the only good thing about this company is the shipping there Reta and tirz is so poor atp idek what I’m putting in myself shame honestly.then all there reply’s is gonna be “not for human consumption” 😂lol shame

April 24, 2026
Unprompted review
Rated 5 out of 5 stars

High-Quality, Third-Party Tested Peptides with Fast Shipping

I’ve had a great experience with Peptira. The quality of their peptides has been consistently solid, and I really appreciate that their products are third-party tested—it adds an extra level of confidence in what you’re getting.

Shipping is fast, which makes a big difference when you’re relying on timely delivery. Customer service has also been a strong point—they’re responsive, helpful, and easy to work with if you have any questions.

If you’re looking for a company that offers high-quality, third-party tested peptides with dependable service, Peptira is definitely worth considering.

April 2, 2026
Unprompted review
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Rated 5 out of 5 stars

I’ve had a really great experience…

I’ve had a really great experience using Peptiria and wanted to share my feedback for anyone considering them. From the start, what stood out to me was the quality and consistency of their products. You can tell they take their sourcing and formulation seriously, which gave me a lot of confidence. Other companies were ok some would take forever but not Peptira they are fast and easy to work with. Code Jesse

April 22, 2026
Unprompted review
Rated 5 out of 5 stars

Great company

Have ordered multiple times from this company. Each time has been easy to transact, good pricing and fast shipping. All products ordered have been good quality and produced excellent results. Had one order error which was quickly resolved. Customer service responded with in minutes of notification, even though it was outside normal business hours. Reshipment was fast and issue was resolved within two days. All other orders have been correct.

April 22, 2026
Unprompted review
Rated 2 out of 5 stars

4 weeks on Reta

4 weeks on Reta, and i felt the side effects but no weight loss. Idk why, I saw people posting 10 lbs loss 2 weeks in and for me it didnt work. I bought 3 vials of 10mg, idk if im gonna keep taking them anymore. I started at .5 mg 1st week, 1mg 2nd week, 1.5 3rd week, then 2mg 4rth week. I just bought some reta somewhere else to see if i get results with a different vendor.

April 15, 2026
Unprompted review
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Rated 1 out of 5 stars

Peptira's Reta is Worthless

I started Reta through a different company and it was mind blowing . On 2mg there was great effect and progress. I then decided I was all in and made the mistake of buying a 3-pack of 30mg Reta from Peptira. I upped the dose but got nothing. Hoped the dose again up to 6mg and still absolutely nothing. I spent a lot of time frustrated and asking around if my body started to reject Reta. Turns out, it was just Peptira. Took my money, gave me an awful product, will use the "research chemical" legal loop hole to shrug off responsibility. Do not buy from them, there are plenty of higher quality and lower cost options to pick from, and if you're going down on the Reta journey, I want you to get the best for what you're paying for.

April 15, 2026
Unprompted review
Rated 5 out of 5 stars

tested and safe

Their product is tested and safe. It also came super fast, much faster than we will get it from a telehealth and no hoops to jump through as well as way more affordable!

October 30, 2025
Rated 1 out of 5 stars

Do not by RETA

I ordered from Peptria Peptides after already using Oras Peptides for two months for their Reta 10 mg, and I can confidently say that their product is not effective and not good.

First of all, it foams during reconstitution, and after placing it in the fridge, it becomes impossible to draw the product into an insulin syringe. The solution is thick and unusable.

I experienced no appetite suppression, no weight loss, and no positive effects whatsoever. I ordered three vials for $320 CAD, and they refuse to issue a refund.

They claim the product is not intended for human or animal use and is only for scientific testing reasherch. However, it is very clear that there is not actually 10 mg of reta in their product.

Do not buy from this company — it’s a SCAM.

The only effect I experienced was diarrhea, nothing more.

March 18, 2026
Unprompted review
Rated 5 out of 5 stars

They messed up my order, & fixed it!

They messed up my order, but this is the best experience I’ve had with a peptide company! I ordered 10 50mg vials of SS-31, it arrived in literally 2 days but it had the wrong vials. It was 10 10mg vials of SS-31. So I emailed them about it, and within an hour they replied, had me send a picture of the vials and the packing slip, and immediately sent me the correct 10 kit 50mg vials of SS-31! And on top of that they let me keep the one they sent before, 10 vials of 10mg each SS-31 for free! It’s not a cheap peptide either it goes for well over $300 and they just let me have it for free. I will definitely be buying from them again. Highly recommend

March 31, 2026
Unprompted review
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Rated 1 out of 5 stars

Do not buy from them they are way more…

Do not buy from them they are way more suppliers out there that actually care about their customers business. They were offering a 30% off sale but my order didn’t go through. Then when I tried again a couple of days later the sale wasn’t going through. Literally a day later it was 30% off again and they refused to give me the full sale price and now they are saying they don’t take returns. Absolutely atrocious customer service.

Edit: WOW! That’s seriously your response?? That you will lose tens of thousands in sales if you let all of your customers get the sale price you advertise on your website?! Lmao what a joke. Maybe you shouldn’t run sales if you want your customers to actually get the sale price. You absolutely did lose thousands of dollars in future order from me and my network. Idiots.

lol you won’t stay in business long treating customers like that. Guess you’ll just have to find out the hard way. Good luck 🤣

March 27, 2026
Unprompted review
Peptira logo

Reply from Peptira

Unfortunately if we gave everyone the ability to backdate sales we would have thousands and thousands of requests for this. Per the terms and conditions and the nature of our product we absolutely do not take returns. We are widely touted for our awesome customer service. I am sorry that you feel otherwise.

Wishing you luck in your research efforts.

EDIT: No we didn't say anything about "Tens of thousands in sales" we said we would have "thousands and thousands of requests" if we allowed everyone who missed the sale take advantage of a sale that has passed or not yet started. All discounts are applied based on the time the order is successfully completed. Unfortunately your order would have fallen outside of that timeframe.

Best regards,

Rated 2 out of 5 stars

MLM Coded Affiliate Program

Was invited to the referral affiliate program for about a month, and was then blocked from participating. I assume because I didn't convert enough. Several of my followers tried to use my code and were told it no longer worked. Only placed one order with them (with my own money) wasn't even able to fully see how I benefited before they kicked me out of the referral program. It's also illegal to promote these peptides for human use on social media, so I'm confused about what their expectations are for their referral program. To me, that's very MLM coded. Now they just spam me with promotional emails.

October 30, 2025
Peptira logo

Reply from Peptira

Hello, we do require lab referral partners to promote the product and not use their codes only for their own purchases for their own laboratories. If there are not code uses from other labs we do terminate the code as we we do have expenses around having codes given to partners. Fortunately we only send out about 1-3 promotional e-mails to our labs per month so there is no spamming happening here 🙂

Rated 5 out of 5 stars

Great company

Great company. Quick shipping. Customer support is fantastic. Make sure you record yourself opening packages. There’s always a chance UPS damages your product and the only way to get a replacement is to have a video showing it. Happy researching!!

March 25, 2026
Unprompted review
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Rated 5 out of 5 stars

Peptira was my very first pep order

Peptira was my very first pep order, and I am not disappointed! The product I received has worked, as shown by the weight decrease of my research. I do recommend and will purchase from Peptira again.

February 5, 2026
Unprompted review
Rated 1 out of 5 stars

Purity guarantee 97%??

I thought it was industry standard to have purity of 98% their site clearly claims 97% purity guarantee, which is odd. And they try to mislead people by putting 99% on all their place cards! Definitely sus. I will be looking else where just a concern.

March 14, 2026
Unprompted review

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