Absolutely loving my results from Reta, MOTC, and NAD+ and I am even doing lower doses and many online BROS recommend. I did a lot of research before hand for quality 3rd party lab testing with great... See more
Company replied
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
I started with Northline Labs a few months ago with one peptide. I was impressed with their customer care and their speed with getting me my product. Also their quality is like no other I’ve had befor... See more
Company replied
The website is straightforward and easy to navigate. The prices are better than most other sites. I got a text message asking if I had any questions or concerns. Shipping was quick and I received a... See more
Company replied
I couldn’t recommend Northline labs’s more. They are the best in the game, in my opinion. To list a few reasons—they offer high quality peptides (third party tested), amazing customer service, in-dept... See more
Company replied
Company details
Written by the company
Northline Labs is an independent United States supplier of research-grade peptides and bacteriostatic water. We work with researchers, laboratory professionals, and biotech operators who need consistent quality and predictable supply. Every batch we ship is third-party verified at 99%+ purity. The Certificate of Analysis for each lot is published on the corresponding product page before the order moves — no waiting, no requesting. Weekday orders typically ship same-day via UPS, and we run a standing buy-one-get-one-50%-off offer across the catalog. We answer customer emails in hours rather than days, and we read every reply. Lot quality, transparency, and responsive support are the three things we work hardest to never miss — and the reason most of our customers come back.
Contact info
United States
- northlinelabs.org
4.6
Excellent
378 reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 90% of negative reviews
Typically replies within 1 month
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Surprisingly quick delivery window
Surprisingly quick delivery window. Great quality, packaged great.
Had someone reach out to make sure everything had went well during process. Will be ordering again.
June 1, 2026
Unprompted review
Reply from Northline Labs
Thank you! Quick delivery, solid packaging, and a check-in to make sure all went well — that's the experience we want every time. See you on the next order!
Love that these come from MN
Love that these come from MN. Came well packaged. Affordable while remaining pure. Don’t forget your BAC water.
May 20, 2026
Unprompted review
Reply from Northline Labs
Thank you, Lydia! Proud to be Minnesota-based, and glad the packaging and value landed right. Great shout on the BAC water too. Appreciate you!
Great service and peptide seem to be…
Great service and peptide seem to be working 😁 for me
June 9, 2026
Unprompted review
Reply from Northline Labs
Thank you, Eusebio! Great service is something we really focus on — glad it showed. We appreciate you taking the time to leave a review!
The website is straightforward and easy…
The website is straightforward and easy to navigate. The prices are better than most other sites. I got a text message asking if I had any questions or concerns. Shipping was quick and I received a tracking number pretty quickly. All in all Northline Labs is great and I highly recommend them!
June 4, 2026
Unprompted review
Reply from Northline Labs
Thank you, Ray! Easy to navigate, fair prices, proactive support, and quick tracking — that's the full experience we're going for. Thanks so much for the recommendation!
Great results from Reta
Great results from Reta. Good pricing. Quick delivery.
May 11, 2026
Unprompted review
Reply from Northline Labs
Thank you, Kelli! Good pricing and quick delivery are exactly what we aim for. We really appreciate you taking the time to review!
Easy to order with no hassle and…
Easy to order with no hassle and received my items faster than I thought. Will definitely use Northern Labs again.
May 28, 2026
Unprompted review
Reply from Northline Labs
Thank you, Carlos! No hassle and faster than expected — that's the goal. We'll be here when you're ready to order again. Appreciate you!
A bit over priced…
A bit over priced compared to other companies I have purchased from. I only order if they are giving an extra discount on top of what they have now. Wish they were more competitive with their pricing.
May 8, 2026
Unprompted review
Reply from Northline Labs
Hi Cynn — fair feedback, and thanks for being straight with us. We work hard to keep quality high and prices fair, and we run promos pretty regularly (right now it's Buy 1 Get 1 50% off). Hope we keep earning your orders — email hello@northlinelabs.org anytime and we'll keep you posted on deals.
I ordered Reta
I ordered Reta . Bc I was on brand Tirzepatide 15 mg from lily ..I went to 10 mg dose of Reta.. I had no result .. they are responsive and ship quickly . They claim the Reta is from a Texas lab . Their address in Minnesota but seems to have ox
Ownership in Canada . I would be wary of a company that uses a cofe of « the bearded gorilla « the owner I think is the bearded gorilla .. any way most of their spokes people look like they are on anabolic steroids and androgens They had a moron chiropractor advise you to use Reta and Tirzepatide together ( an Md is really gonna prescribe research pharmaceutical ) ?? . But to check first w your Md . I think think their peptides might be ok as they are easy to get . I think the Reta was horse feathers . Any way beware of medical advice from the drivers seats of Ubers etc . .. I find that hysterical .. and chiropractors and guys pumped up on steroids . Which is what most of their spokespeople look like . They are a new company and seem quite popular .. don’t know and don’t think they are scammers … but be wary of the source and quality
May 10, 2026
Unprompted review
Reply from Northline Labs
Hi Amy — thanks for the thorough rundown, and for the kind words on our speed and responsiveness. If anything about your order wasn't right, we'd really like to make it good — drop us a line at hello@northlinelabs.org and we'll take care of you.
I did not feel anything whatsoever
I did not feel anything whatsoever. Very disappointed, I feel I got scammed. I have taken semaglutide in the past prescribed so I am familiar with what I should have felt. I literally didn’t get any affects.
May 25, 2026
Unprompted review
Reply from Northline Labs
Hey Adrian — appreciate you giving us a shot, and sorry you weren't impressed. We've got a community of 20,000+ repeat researchers who keep coming back, and every batch is third-party tested at 99%+ purity, so we stand behind what's in the vial. We'd genuinely like to make this right and look into your order — shoot us a note at hello@northlinelabs.org and we'll take care of you.
High quality
High quality material. Fast shipping. Quick helpful, responses from customer service. I couldn't ask for any better!
June 8, 2026
Unprompted review
Reply from Northline Labs
Thank you, Kayla! Fast shipping and responsive support are exactly what we're going for — glad it showed. We really appreciate you!
Personalized service
I had many questions when I first started using peptides. I reached out to get information on storage, use and reconstituting. I received a personal and detailed response which was much appreciated.
June 8, 2026
Unprompted review
Reply from Northline Labs
Thank you, Kate! We always want people to feel comfortable reaching out with questions — glad our team could give you a detailed, personal response. Appreciate you!
Reply from Northline Labs
Thank you, Razya! Prompt service and solid packaging are non-negotiables for us — glad it was a great experience. See you next order!
Love the product
I have only ordered once so far. I do plan on making other order in a week or so . I have been please with the web site, the ordering, the timely delivery of my order. And I’m sure I will be pleased with the customer service. If I ever have to reach out to them.
May 20, 2026
Unprompted review
Reply from Northline Labs
Thank you, Leah! Glad the website, ordering, and quick delivery all landed well — and we'll be ready for that next order. Appreciate you giving us a shot!
Ordered several time with no issues…
Ordered several time with no issues with products and no issues with shipping.
June 8, 2026
Unprompted review
Reply from Northline Labs
Thank you! Several orders with zero issues on products or shipping — that's exactly what we like to hear. Appreciate you being a regular!
Reta, MOTC, NAD+
Absolutely loving my results from Reta, MOTC, and NAD+ and I am even doing lower doses and many online BROS recommend. I did a lot of research before hand for quality 3rd party lab testing with great pricing and Northline Labs delivers both. I will definitely order again.
May 11, 2026
Unprompted review
Reply from Northline Labs
Thank you, Shawn! We appreciate you doing your homework on third-party testing and pricing — that's exactly the standard we hold ourselves to. Grateful for the order, and we'll see you next time!
Shipping is ridiculously fast
Shipping is ridiculously fast, prcing is fair and product is good. On my third order from them.
June 2, 2026
Unprompted review
Reply from Northline Labs
Hi Linden — three orders in, that means a lot. Glad the fast shipping and fair pricing are landing right. Thanks for sticking with us!
Order came fast and we are very happy
Order came fast and we are very satisfied with the products.
May 29, 2026
Unprompted review
Reply from Northline Labs
Thanks John! Fast delivery and a satisfied customer — that's the goal every time. We appreciate the support!
Fast shipping and great products so far
Fast shipping and great products so far
May 18, 2026
Unprompted review
Reply from Northline Labs
Hi Brandi — love to hear it, thank you! We'll keep the shipping quick and the quality where it should be. See you on the next one.
Decent shipping times and packaged…
Decent shipping times and packaged well. Very pleased with my order and will order again. 5 stars!
May 28, 2026
Unprompted review
Reply from Northline Labs
Thank you, Marvin! Glad it arrived well-packed and on time — looking forward to the next one. 5 stars right back at you!
Early on in my journey
Early on in my journey, but arrived quickly and look forward to continued progress.
June 7, 2026
Unprompted review
Reply from Northline Labs
Thanks Dan! Glad it arrived quickly, and we appreciate you choosing us. We're here whenever you need us!
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.
Learn more about other kinds of reviews.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.