Peptide Sciences

US-based peptide supplier specializing in high-purity research peptides with third-party testing.

What Customers Mention

shippingfastarriveddaysqualityipamorelinconsistentfine

Reviews

May 5, 2026
never received final order
Gregory U.

Placed one last MK-677 order days before they went dark. It never arrived and support has been unreachable. Just disappointing.

Mar 30, 2026
pending order, no response
Dennis Z.

My order was still processing when they shut down. No shipment, no refund, no reply to any of my emails. Just radio silence.

Mar 8, 2026
site won't load
Karen H.

Tried to reorder TB-500 and the site has been down for days. Anyone know if they're actually gone or just having issues?

Jan 27, 2026
price went up
Monica R.

Bought BPC-157 here for a while but the price jumped noticeably on my last order. Product is fine, just getting hard to justify.

Dec 30, 2025
Disappointed with CJC combo quality
Emily Watson

I've ordered from Peptide Sciences twice before with decent results, so I was surprised when this CJC-1295 + Ipamorelin combo arrived with issues. First, shipping took 9 days despite paying for expedited delivery. When it finally arrived, one vial had a broken seal - not completely open but clearly compromised. I contacted customer service and it took them 4 days to respond, then another 3 days of back-and-forth before they agreed to send a replacement. The replacement took another week to arrive. The actual peptide quality seemed okay based on the COA (96.8% purity) but the whole experience was frustrating. For the premium pricing they charge, I expected much better logistics and customer care. Probably going to try other vendors for my next research order.

Dec 22, 2025
Disappointing quality on recent order
Daniel Hart

Ordered both the CJC-1295 + Ipamorelin blend and Semax for research purposes. The CJC blend arrived fine, but the Semax vial looked suspect - some cloudiness that wasn't there in my previous orders from other vendors. COA was dated but when I requested more recent testing data, customer service took 5 days to respond with a generic reply. Expected better from a company with this reputation. Shipping was decent at least, 6 days to east coast. Won't be ordering the Semax again but might give the combo blend another try.

Oct 24, 2025
underfilled vial
Christian T.

One of the two vials in my TB-500 order looked short on fill compared to the other. Small thing but at these prices it bugged me.

Aug 28, 2025
wanted a refund
Holly Q.

One vial arrived looking off and I asked about a replacement. They told me no returns due to regulations. Understand the policy but it was frustrating.

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Vendor Info

StatusUnclaimed
WebsiteVisit
Reviews53
Products23
Lab Tests0

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