# Zenith Research

*Source: https://total.reviews/vendors/zenith-research*

## Summary

- Rating: ★★★★☆ 3.9/5 from 17 reviews
- Website: https://zenithresearch.co
- Verified lab tests / COAs: 0
- Products listed: 7

High-purity peptide vendor catering to academic and institutional researchers.

## Rating breakdown

- 5 star: 3
- 4 star: 10
- 3 star: 3
- 2 star: 1
- 1 star: 0

## Lab tests & certificates of analysis

_No verified lab tests on file._

## Products

| Product | Category | Price (USD) |
| --- | --- | --- |
| Bacteriostatic Water | Supplies | $65.95 |
| CJC\-1295 | Growth Hormone | $32.10 |
| DSIP | Sleep | $33.19 |
| Epithalon | Anti\-Aging | $71.56 |
| TB\-500 | Healing | $63.68 |
| Tesamorelin | Growth Hormone | $69.49 |
| Tirzepatide | GLP\-1 | $76.83 |

## Recent reviews (17 most recent of 17)

### ★★★☆☆ fine product but the shipping dragged

*Blake H. — May 31, 2026*

The TB-500 vials themselves were fine, sealed properly and filled to the line. It just took nine days to arrive after I ordered, and tracking sat unmoved for most of that. Not terrible, just slower than I'd hoped for a domestic vendor.

### ★★★★☆ decent source

*Heather F. — May 19, 2026*

First order of BPC-157 from Zenith and it showed up sealed with the COA tucked in the box. No drama, would buy again.

### ★★★★★ quick shipping COA matched

*stephanie580 — May 4, 2026*

Ordered MK-677 and it was at my door in two days. COA matched the batch number on the vial. Reordering.

### ★★★★☆ my go\-to

*Carl S. — Apr 9, 2026*

Been ordering BPC-157 from here for a while now. Domestic shipping is consistently a few days and the testing docs are always posted. Wish they kept TB-500 in stock more often.

### ★★★★☆ no issues

*Jacob D. — Mar 12, 2026*

Semaglutide arrived fast, vials clean and properly labeled. COA was easy to find. Checkout on the site was simple.

### ★★★★☆ Fast shipping on Tirzepatide

*Tessa Norton — Feb 10, 2026*

Got my Tirzepatide order in 3 business days which was faster than expected. Product came vacuum sealed with a recent test date. Haven't had issues with reconstitution. Pricing is competitive compared to other vendors I've used. Will likely reorder.

### ★★☆☆☆ slow this time

*monica821 — Feb 6, 2026*

Usually quick but my last order sat for almost a week before a tracking number showed up. Support replied eventually and apologized. Product was sealed and fine when it got here.

### ★★★★☆ Zenith delivered quality Tirzepatide

*Jade Romero — Jan 25, 2026*

Ordered Tirzepatide from Zenith Research and it arrived in 3 days with FedEx Express. Vial was packaged in a hard plastic case with foam padding and a gel ice pack that was still cold. COA included with 99.3% purity results. Lyophilized powder looked perfect, reconstituted cleanly with no residue. Price was  for 10mg which is competitive for Tirz. Website is modern and easy to use, checkout was smooth. They sent tracking info within an hour of ordering. Only thing that could be better is they charge  for shipping, while some vendors offer free shipping over a certain amount. Still, quality and speed make up for it.

### ★★★★☆ reliable so far

*jesse.w.method — Jan 11, 2026*

Third order with Zenith. Ipamorelin and CJC both in stock, both shipped same day. Prices crept up a bit since summer but still reasonable.

### ★★★☆☆ COA not batch specific

*Gabriela N. — Dec 3, 2025*

Powder reconstituted clear and shipping was fast. My only gripe is the COA they linked looked generic rather than tied to my exact batch. Asked about it and they did send a newer one.

### ★★★★☆ retatrutide order

*Nicholas X. — Nov 15, 2025*

Retat showed up quick and the vial fill looked accurate. Third-party HPLC numbers were on the COA. No complaints.

### ★★★★★ great customer service

*Justin L. — Oct 29, 2025*

Emailed with a question before ordering and got a real answer back fast, not a canned reply. Small operation but they clearly care. GHK-Cu arrived two days later.

### ★★★★☆ Solid products, could improve communication

*Beau Sinclair — Oct 22, 2025*

Ordered Epithalon and DSIP together for a research project. Both came with clean COAs showing good purity numbers. Packaging was professional with proper labeling. My only complaint is their customer service took about 36 hours to respond to a pre-order question, which felt slow. Once they replied though, they were helpful and knowledgeable. Products themselves performed exactly as expected in our testing protocols. Would order again but hope they speed up response times.

### ★★★☆☆ fine but plain box

*Thomas Z. — Oct 7, 2025*

Product was fine and the COA checked out. Just a plain bubble mailer though, expected a little more for the price. Shipping itself was quick.

### ★★★★☆ good packaging

*biohack\_jason — Sep 21, 2025*

Tirzepatide order came well packed with an ice pack still cold. Free shipping was a nice touch. COA matched the batch.

### ★★★★★ fast and tested

*Felicia U. — Sep 2, 2025*

Same day shipping is real here. Vials arrived sealed and labeled clean, lyophilized cake intact. The QR code on the vial pulled up the actual lab report which I appreciate.

### ★★★★☆ solid source

*naomi.o.science — Aug 19, 2025*

Ordered the BPC-157/TB-500 blend and it showed up in three days. COA was right there on the product page, no chasing it down. Will order again.