# Narrow Labs

*Source: https://amino.reviews/vendors/narrow-labs*

## Summary

- Rating: ★★★☆☆ 3.5/5 from 29 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: 5
- 4 star: 10
- 3 star: 9
- 2 star: 4
- 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 29)

### ★★★☆☆ decent vendor with a few rough edges

*heather\_coach — Aug 14, 2026*

I've gone back and forth on whether to keep ordering from Narrows. On one hand the pricing is some of the better I've found and the free domestic shipping adds up over multiple orders. On the other hand their COA practices are inconsistent — some products have a recent batch-specific certificate, others link something generic and months old. This last order the COA was current, which was a relief. Packaging was a plain padded mailer, vials intact, fill looked right. They're fine, just keep your expectations measured and check the testing docs before you buy.

### ★★★★☆ fast dispatch

*Lydia L. — Aug 1, 2026*

Placed the order in the morning and it shipped the same afternoon, exactly like their site says. Good turnaround.

### ★★☆☆☆ price went up and stock is spotty

*Travis Q. — Jul 22, 2026*

Half the peptides I wanted were marked out of stock and the ones available had crept up in price compared to my order earlier this year. Ended up only getting one of the three things on my list. The single vial that did ship was packaged fine, I'll give them that, but the inventory situation made the whole thing frustrating.

### ★★★★☆ reliable enough

*Gabriel I. — Jul 11, 2026*

Third order with them and shipping has been consistent every time. Boxes are plain but everything inside is padded well.

### ★★★☆☆ customer service is slow to reply

*Eric C. — Jul 3, 2026*

The order arrived intact and the products were fine, so no issue there. But I emailed them a question about a discount code before ordering and didn't hear back for four days. By then I'd already placed the order anyway. If you're patient it's fine, just don't expect a fast response.

### ★★★★★ no complaints here

*stephanie.v.fit — Jun 26, 2026*

Ordered TB-500, came quick, vials were sealed tight and the COA matched the lot. Smooth all around.

### ★★★☆☆ mixed bag

*Walter E. — Jun 18, 2026*

Used Narrows years ago back when they did SARMs and the experience this time was about the same — decent product, okay packaging, nothing that wows you. The vial fill looked a touch under the line on one of the two I ordered. Not enough to complain hard about, just worth mentioning.

### ★★★★☆ good prices, free shipping

*wesley\_study — Jun 9, 2026*

Pricing is genuinely competitive and the free US shipping is a nice touch. Took five days to reach me on the east coast.

### ★★☆☆☆ tracking number went nowhere for days

*trials\_helena — Jun 4, 2026*

Got a shipping confirmation with a tracking number that didn't scan into the system for almost a week. Eventually the package did show up and the product was fine, but a week of a dead tracking link is stressful when you don't know if the order actually moved.

### ★★★☆☆ 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.

All reviews: https://amino.reviews/vendors/narrow-labs