Core Peptides

I've been researching peptides for years. CJC-1295/ipamorelin and wolverine blends to be specific. I switched to core peptides hoping to save a little bit of money. horrible mistake. The CJC/Ipa blend was clumpy and wouldn't dissolve. It wasn't my bac water because I tried again with a vial from my previous brand, worked great. Worst part is that once I FINALLY got a response from customer service they were useless. No refund, blamed me, wouldn't take ownership. Their lab tests look a bit suspect too. I won't be ordering again.

Start with the good, lots of options! —but they around of stock of what I want. Then I click on their COAs and it’s just an auto generated image, if they do have real 3rd party testing? please correct me if so…

third vendor ive tried for sema and core peptides is the only one where i actually felt confident in what i was getting. Purity report was right there on the product page which none of the other places had. Shipping was like 2 days to florida. Only thing id say is the website could be a litle easier to navigate but thats a minor complaint lol. Product itself is 10/10

Been running studies with Core Peptides' TB-500 and their CJC-1295 + Ipamorelin blend for the past six weeks. Both products have exceeded expectations in terms of purity and consistency. The TB-500 showed 99.2% on the COA which is outstanding, and the combo blend was right at 98.7%. Packaging is professional with proper temperature control during shipping. They include reconstitution instructions which is helpful for new researchers. Customer service answered my questions about storage requirements promptly. The pricing is fair given the quality standards they maintain. No complaints whatsoever - this is how a peptide research supplier should operate.

I was skeptical about GHK-Cu tbh but decided to give it a shot from Core after reading some studies. The product arrived in 3 days, well packaged with desiccant packets and proper labeling. Ive been really impressed with the results so far. Already placed a second order and added some NAD+ to try as well. These guys are becoming my go-to for sure

This is my third order of the CJC/Ipa combo from Core Peptides and I keep coming back for a reason. The blend is precisely dosed and the purity testing documentation they provide is legit - I actually verified the batch number on their site and it matched perfectly. For research purposes this has been the most consistent source I've found. The vacuum seal on the vials is solid and they ship with ice packs even in summer. Communication is professional and they respond to technical questions within a few hours. Pricing might be slightly higher than some competitors but you get what you pay for in terms of quality control. Highly recommend for serious research applications.

Ordered CJC-1295, KPV, and Tirzepatide for different research protocols. All three came well-packaged and the COAs showed good purity numbers - CJC was 99.1%, KPV at 97.8%, and Tirz at 98.6%. Shipped via priority mail and arrived in 3 days. The only reason I'm not giving 5 stars is the KPV vial had some minor crystallization but it dissolved fine once reconstituted. Their product selection is excellent and covers most of what I need for ongoing studies. Customer portal is easy to use and order tracking actually works unlike some other vendors. Will definitely order again.

Got an email from Core Peptides asking for feedback after my last order. I've been using their TB-500 for various tissue repair studies over the past two months and the results have been consistently reliable. The peptide arrives with proper COA documentation showing 98.4% purity which matches what they advertise. Shipping took about 4 days which is reasonable. Only minor complaint is the vials could use better cushioning in the packaging - one arrived with a slightly loose cap though the product itself was fine. Customer service responded quickly when I asked about reconstitution protocols. Price point is competitive for the quality you're getting.

Ordered BPC-157 and TB-500 on a monday night and had tracking by tuesday morning. Honestly wasnt expecting that kind of turnaround. Both vials came sealed with batch numbers and everything looked legit. Been running them for about 3 weeks now for a nagging shoulder issue from bjj and the improvment has been noticeable. Will def be reordering when I run out.

Quick review - ordered Tesamorelin and KPV for a comparative study. Both arrived in 2 days, properly sealed, with COAs showing 98%+ purity. Core Peptides continues to deliver exactly what they promise. Their checkout process is smooth and they don't spam you with marketing emails. Solid vendor.

Picked up the CJC-1295 + Ipamorelin combo and its been solid. Packaging was professional, cold pack included even tho it was december. Customer service answered my dosing question within a few hours too which was nice. Price is maybe slightly higher than some competitors but you get what you pay for in this space imo. Would reccommend.

Ordered both standalone Ipamorelin and the CJC-1295 + Ipamorelin blend for comparison studies. Both products arrived in perfect condition with COAs showing 98%+ purity. The standalone Ipa was 99.1% and the blend came in at 98.4%. Core Peptides has their quality control dialed in. Shipping was quick and packaging was secure with proper temperature management. Their customer portal makes reordering simple and they keep your order history which is convenient. For research purposes these peptides have performed exactly as expected. Definitely recommend.

Been sourcing MK-677 from differnt vendors for a while now and Core Peptides is easily top 3. The COA checked out when I compared it against third party testing and everything was within spec. Fast shipping to texas, discreet packaging, no issues at all. Only reason im not giving more detail is because honestly theres nothing to complain about haha. Solid vendor.

Ordered CJC-1295 for ongoing growth hormone research studies. The product arrived within 3 days, properly packaged with adequate cooling. The COA showed 98.9% purity which matches their specifications perfectly. I appreciate that Core Peptides doesn't cut corners on quality control. The vial was properly sealed and the peptide was in perfect condition. Their documentation is thorough and professional. I've recommended them to several colleagues who have also had positive experiences. For research purposes only of course, but this is exactly the level of quality you need for reliable study results.

Ordered Epithalon, Ipamorelin and Tesamorelin last Thursday and they arrived Monday morning. All three peptides came with current COAs and proper labeling. The quality is exactly what you need for research purposes. Core Peptides has become my go-to supplier because they're just consistent every single time.

I've been sourcing KPV from various suppliers for my research and Core Peptides has the best quality I've tested. The purity came in at 99.3% on the COA which is remarkable. The peptide was properly lyophilized and sealed. Shipping was fast - ordered on Monday evening and it arrived Wednesday morning. Their website makes it easy to find technical specs and third-party testing results. Customer support is knowledgeable and actually understands the products they're selling. For anyone doing serious research work with KPV, this is the supplier to use. Worth every penny.

I received an invitation to review my recent purchase and I'm happy to share my experience. I've been conducting research with BPC-157 from Core Peptides for about three months now across multiple study protocols. The consistency batch-to-batch has been exceptional - every vial tests at 98.5% or higher purity according to their COAs, and I've independently verified two batches which matched their documentation perfectly. The peptide arrives properly lyophilized with excellent stability. Packaging includes multiple layers of protection with temperature-monitored shipping, and they use discreet packaging which I appreciate. Customer service is responsive and knowledgeable - I had detailed questions about storage protocols and reconstitution best practices, and they provided thorough answers backed by actual research. The website is easy to navigate and includes detailed technical specifications for each product. Shipping has been consistently fast, usually 2-3 business days. For serious research applications where quality and reliability matter, Core Peptides has become my primary source. The price point reflects the quality - not the cheapest option out there, but absolutely worth it for the peace of mind knowing you're working with properly manufactured research compounds. I've already placed my next order and will continue using them for all my BPC-157 research needs.