# Narrow Labs *Source: https://total.reviews/vendors/narrow-labs* ## Summary - Rating: ★★★★☆ 3.5/5 from 20 reviews - Website: https://narrowlabs.com - Verified lab tests / COAs: 0 - Products listed: 4 Research chemical supplier specializing in capsule format SARMs and peptides. ## Rating breakdown - 5 star: 4 - 4 star: 7 - 3 star: 6 - 2 star: 2 - 1 star: 1 ## Lab tests & certificates of analysis _No verified lab tests on file._ ## Products | Product | Category | Price (USD) | | --- | --- | --- | | BPC\-157 | Healing | — | | Bacteriostatic Water | Supplies | — | | MK\-677 | Growth Hormone | — | | Melanotan II | Tanning | — | ## Recent reviews (20 most recent of 20) ### ★★★☆☆ fine but the coa was old *Fiona D. — May 27, 2026* Order itself was smooth and the vials looked clean and properly sealed. My only gripe is the certificate of analysis they linked wasn't batch-specific, it was dated several months back. For the price I'd expect testing tied to the actual lot. ### ★★★★☆ solid restock *Jeffrey C. — May 19, 2026* Been waiting on their BPC-157 to come back in stock for a while and grabbed two vials the day it dropped. Shipped same day like they promise, COA was right there on the product page. ### ★★★★★ reliable source *Kayla Q. — Apr 24, 2026* Few orders in now. Pricing stays competitive, shipping is quick, bottles always sealed. Does what I need it to. ### ★★★☆☆ shipping a bit slow this time *Emma T. — Mar 29, 2026* My earlier orders came in two or three days, this one took most of a week with slow tracking updates. Product was fine when it got here. ### ★★★★☆ powder looked good *Kevin E. — Mar 6, 2026* YK-11 powder reconstituted clear, vial sealed and labeled properly. Took four days to land. Happy with it. ### ★★☆☆☆ restocking fee *Nathan J. — Feb 14, 2026* Returned an item and got dinged a restocking fee on top of paying return shipping. Policy is stingier than it should be. Product quality was okay otherwise. ### ★★★★☆ Good Melanotan II source for research *Nate Holloway — Feb 3, 2026* Been using Narrow Labs for a few months now, mostly for Melanotan II studies. This latest batch came with a really detailed COA that included additional amino acid sequencing data which was super helpful for my documentation. Purity came in at 98.6% which is excellent. Reconstituted perfectly and the vial quality is noticeably better than some budget vendors I've tried. Shipping was 5 days, tracking updated regularly. Price point is fair for the quality. Only minor gripe is their website doesn't save your shipping address for future orders so you have to re-enter everything each time. Will definitely keep ordering for research purposes though. ### ★★★★☆ support replied fast *Chelsea L. — Jan 27, 2026* Emailed about a tracking question and heard back the same afternoon. Helpful and to the point. Order itself was fine. ### ★★★★★ no complaints *Sarah Y. — Jan 9, 2026* Andarine S4 caps, ordered Thursday, here Monday. Zelle discount made it a bit cheaper too. Easy. ### ★★★☆☆ COA not batch specific *Hannah V. — Dec 22, 2025* The cert they sent was current but it wasn't tied to my actual batch number. Would prefer a real batch match. Shipping and packaging were good. ### ★★★★☆ quick reorder *Michael C. — Dec 8, 2025* Second order of MK-677. Both times shipped same week and the bottles were labeled correctly. Solid enough. ### ★★★☆☆ Narrow Labs \- average experience overall *Veronica Soto — Nov 30, 2025* Placed an order for MK-677, Melanotan II, and BPC-157 about three weeks ago for ongoing lab research. The MK-677 and BPC-157 both checked out fine - good purity according to the included COAs, dissolved cleanly, proper labeling. The Melanotan II however arrived with a manufacturing date that was almost 11 months old. Not expired technically, but I prefer fresher compounds for baseline studies. Customer service was okay when I reached out, they offered a 10% discount on my next order but I would've preferred a replacement. Shipping took 6 days which is middle of the road. Pricing is competitive but not the cheapest I've seen. They're not bad, just nothing that makes them stand out from the dozen other vendors I've tried over the past two years. ### ★☆☆☆☆ payment dispute mess *Chelsea S. — Nov 21, 2025* Cash App order glitched and instead of just sorting it they asked me to send more money to fix the form. Took weeks of emails before it resolved. Not worth the headache. ### ★★★★★ clean packaging *Travis R. — Nov 4, 2025* Branded bottles, everything sealed, nothing rattling around. BPC-157 caps showed up in two days. Reordering. ### ★★★☆☆ half their stuff out of stock *Nicole Y. — Oct 18, 2025* Wanted Ostarine powder and Cardarine in one order and ended up only able to get one. Stock is hit or miss. What I did get shipped fast. ### ★★★★☆ COA in the box *Ashley T. — Oct 2, 2025* Ostarine arrived with a current third-party cert tucked in. Showed under 30 days old like they claim. Decent. ### ★★☆☆☆ vial came underfilled *Thomas R. — Sep 19, 2025* Lab tested my S23 caps out of curiosity and they came in noticeably under the labeled dose. Packaging and shipping were fine, but that is the part that matters. ### ★★★★☆ good prices *Sean R. — Sep 5, 2025* Used the email signup discount and the LGD-4033 came out cheaper than the two other sources I priced. Shipping was quick too. ### ★★★☆☆ no card payment *training\_morgan — Aug 23, 2025* Products fine, shipping fine, but I had to dig out Cash App to check out. No card or PayPal option is a hassle. Knocked a star for that. ### ★★★★★ fast usps *kara52 — Aug 12, 2025* Ordered RAD-140 on a Monday and it was at my door Wednesday morning. Bottles branded and sealed, COA was in the box. Smooth.