Onyx BioLabs (onyxbiolabs.com) has a 4.7 out of 5 rating on OK.one, based on 60 user reviews collected here. It is listed under Construction & Manufacturing and its reputation is excellent. Praise is nearly unanimous, with 94% rating it 4 stars or higher; The business has replied to 100% of negative reviews. Last updated 2026-08-10.
What people say
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Mel Kubena · 1 review · Experienced 2026-05-21 ·
★★★★★
Onyxbiolabs has awesome peptides with…
Onyxbiolabs has awesome peptides with true results. I had a weird feeling after taking one and they got in touch with me with in,minutes. Its was a natural reaction and they talked me through it. They totally care about there customers and treat them like family. I have recommended this company to my family and friends and they have all been so pleased with the results and quality so there products and the fast response. They have been a total blessing. If you email them they will respond right away not like other companies that you never hear back from once they get your money. This company puts on sales all the time which I'm so grateful for. You will not regret using Onyxbiolabs.
Reply from Onyx BioLabs2026-07-11
Hi Mel, thank you so much for the wonderful 5-star review! We are so glad to hear that our team's rapid response times, helpful communication, and commitment to quality have stood out to you. Treating our community with the utmost care is a top priority for us. We truly appreciate your high recommendations to your family and friends, and we look forward to continuing to provide excellent service for all your future project needs!
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Tracy V · 1 review · Experienced 2026-05-22 ·
★★★★★
Fast shipping
Fast shipping, fair prices, good products and 3rd party tested. No brainer.
Reply from Onyx BioLabs2026-07-03
Hi Tracy, thank you so much for the awesome 5-star review! We love hearing that our fast shipping, fair pricing, and third-party testing make choosing Onyx BioLabs a no-brainer for your laboratory. We appreciate your support and look forward to partnering with you on your future projects!
Missing Starter kit, and the small box inside bubble envelope was crushed, vial was ok but China manufacturer ships in hard plastic container with vial encased and inside another cardboard box. HOWEVER their Support team responded with great service and resolved the oversight, kudos to them! Will buy again!
Reply from Onyx BioLabs2026-07-03
Hi David, thank you for bringing this to our attention. We apologize for the fulfillment oversight regarding your Starter Kit and for the transit damage to your packaging during shipping. We take quality control and secure packaging seriously. We have reached out to you directly via email to ship out your missing Starter Kit immediately and replace any damaged packaging items to ensure your project parameters are met.
Hi Chris, there seems to be a fundamental misunderstanding of standard laboratory research materials here. Our compounds are professionally lyophilized (freeze-dried), which concentrates the pure active peptide into a microscopic cake or vacuum-sealed layer at the bottom of the vial. It is completely normal for the vial to appear empty or contain a minimal puck until your laboratory reconstitutes it with a liquid medium. All of our batches are third-party tested to guarantee exact milligram content and >99% purity. Please check our website's FAQ regarding lyophilized appearance, or reach out to [email protected] if your lab needs assistance.
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dory Mary · 2 reviews · Experienced 2026-06-10 ·
★★★★★
I highly recommend Onyx Company
I highly recommend Onyx Company! They are efficient, responsible, and truly professional. Their team provides excellent customer service, and the delivery service is always fast and reliable. It’s a pleasure doing business with a company that values its customers and consistently delivers on time. I will definitely continue using their services and recommend them to others!
Reply from Onyx BioLabs2026-07-02
Hi Dory, thank you so much for the glowing review and high recommendation! We take great pride in delivering fast, reliable service and ensuring our customers are well taken care of. We truly appreciate your business and look forward to continuing to provide top-tier support for your future projects!
Quick response to email when I needed to add to my original order and avoid another shipping charge.
Reply from Onyx BioLabs2026-07-02
Hi Linda, thank you so much for the 5-star review! We are always happy to help combine orders and save our researchers on shipping charges whenever possible. We appreciate your support and look forward to assisting with your future laboratory projects!
Repeat customer because of good quality products, decent shipping times, and good/friendly communication. I love the packaging as well!
Reply from Onyx BioLabs2026-07-02
Hi Claire, thank you so much for the 5-star review! We love hearing from our repeat customers, and it's awesome to know that our product quality, friendly communication, and secure packaging continue to meet your expectations. We truly appreciate your ongoing support and look forward to supplying your future laboratory projects!
I understand this is all for research purposes but a little insight on how to measure everything to get the correct amount would be helpful. Just wanna make sure my hypothesis is accurate. Other than that, no complaints. Easy process, quick shipping, nice packaging. I will definitely be recommending this site to everyone who is interested in their own research.
Reply from Onyx BioLabs2026-07-01
Hi Jeremy, thank you for the 5-star review and for confirming the easy process and quick shipping! Because our compounds are strictly for laboratory research, we cannot provide specific protocol instructions. However, for ensuring an accurate hypothesis, most independent researchers rely on online peptide reconstitution calculators, which make the milligram-to-liquid volume math incredibly straightforward. We appreciate your support!
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Courtney B. · 1 review · Experienced 2026-06-24 ·
★★★★★
amazing product and people!
Started with a 5mg vial of Reta to test it out. Ordered 3 more vials of 10mg Reta and 2 bac waters. REAL product, the food noise is gone and I've had a ridiculous amount of energy - even FINALLY cleaned my depression closets after almost 2 years. Amazing customer service too - I thought I was missing product and Tracy provided thorough instructions and all I had to do was open the waters lol. Fast delivery from Charlotte, NC which is where I live so I got it the next business day. Great company, amazing product. Will remain a customer!
Reply from Onyx BioLabs2026-06-24
Hi Courtney,
Thank you so much for the incredible review! We are absolutely thrilled to hear how much you're loving the product, and massive congratulations on tackling those closet, that is a huge win!
We're glad Tracy could assist you quickly, and it’s awesome that our local Charlotte shipping got everything to you the very next day. Thanks for being a part of the family, and we look forward to your next order!
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Cali Silvia · 1 review · Experienced 2026-06-17 ·
★★★★★
Seems legit the R3
Ordered some R3 and bac water for my research. Stuff seems legit and seems to be working on the lab rat. Just placed another order for more R3 and will probably be ordering some T2 next month. Shipping is about 4-5 days. I did have some order issues with my first order, my fault, but they quickly resolved it. Would definitely recommend!
Reply from Onyx BioLabs2026-06-24
Hi Cali,
Thank you for the 5-star review! We are glad to hear that your research is going well and that our team was able to quickly resolve the order issue for you. We appreciate your recommendation and look forward to fulfilling your next order!
Hi Kamell, there seems to be a major mix-up here. We do not have any order under your name, we have never gone by the name "UNUX," and we are located in North Carolina—not Arizona. Furthermore, our official ground shipping is a flat-rate $11.99, not $20. It sounds like you may have accidentally ordered from a different website or a scam clone. Please double-check your bank statement and order confirmation, and feel free to reach out to [email protected] if you need help verifying.
Great product for a reasonable price. I recommend this company.
Reply from Onyx BioLabs2026-07-01
Hi Kyle, thank you for the recommendation! We're glad we can provide great products and great service at a reasonable price. We look forward to supporting your next project!
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Connor · 1 review · Experienced 2026-06-10 ·
★★★★★
Just ordered a vial of 10mg Reta from…
Just ordered a vial of 10mg Reta from them for the first time. I have ordered from many different vendors previously and had one I thought was solid but the quality has fallen off recently. Hoping this company has quick shipping and good products so I can make them my new main source. Will update when the package arrives.
Reply from Onyx BioLabs2026-06-13
Hi Connor, welcome to Onyx! According to tracking, your order was successfully delivered within 2 days. We’d love to know if everything met your expectations—feel free to update your review whenever you finish evaluating the package!
Great product and great price. I’ve not had any problems at all. Billing and shipping are amazing.
Reply from Onyx BioLabs2026-06-03
Hi Bradley, thank you for the awesome feedback! We're happy to hear you're loving the pricing, smooth billing, and amazing shipping speed. Thanks for choosing us to support your research!
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Iron Panda · 3 reviews · Verified · Experienced 2026-05-26 ·
★★★★★
Great experience
First time ordering from this company: Quality product, speedy delivery, and overall positive experience.
Reply from Onyx BioLabs2026-06-03
Hi Iron Panda, welcome to Onyx BioLabs! Thank you for the 5-star review. We're glad your first order hit all the marks with product quality and speedy delivery. We appreciate the support and look forward to your next order!
The product was great. Shipping was definitely fast and I recommend this company to all my family and friends. Will use again for further research.
Reply from Onyx BioLabs2026-06-02
Hi Richard, thank you so much for the awesome review! We love hearing that our shipping speed hit the mark and that you're recommending us to your family and friends. We really appreciate the support and look forward to helping you out with your further research!
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Cameron Hall · 1 review · Experienced 2026-05-28 ·
★★★★★
Qreat quality and delivery
My friend recommended me, I've got ghk, reta, and mt2 from them a few times now. Quick delivery and quality product.
Reply from Onyx BioLabs2026-05-29
Hi Cameron, thank you so much for the 5-star review! There’s honestly no better compliment than a word-of-mouth recommendation, so please pass our thanks along to your friend. We're glad we could deliver the speed and quality you need for your GHK, Reta, and MT2 projects. Looking forward to your next order!
I’m a first time buyer here at onyxlabs and I am very excited too try their products ! Unfortunately my package got misplaced and I will have too wait for another. Things happen I just wanna thank Tracy H she’s helping me on expediting my order so I could receive it as soon as possible .
Reply from Onyx BioLabs2026-05-29
Hi Osbaldo, welcome to Onyx! We're so sorry your first package got misplaced by the carrier, but we appreciate your understanding that things happen. I’m glad Tracy could get on top of it quickly to get your replacement expedited. Let us know how your research goes once it arrives!
Hi Logan, thank you for the 5-star review! We are thrilled to hear that your experience with Onyx Biolabs was great all around. We appreciate your support and look forward to serving your research needs again soon!
Great customer service, fast shipping and so far so good on my research products.
Thank you!
Reply from Onyx BioLabs2026-05-15
Hi Darci, thank you for the kind words and the 'Don't Hesitate' recommendation! We take great pride in our customer service and fast shipping. We're glad your research is off to a good start and look forward to being your reliable source for quality compounds.