Core Peptides

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.

Ordered the CJC-1295/ipamorelin combo. Quick checkout and fair price. Shipping was a bit slower than I expected this round.

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.

Emailed a question about reconstitution and got a real answer within the hour. Very helpful team.

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.

Quality is good but the BPC-157 I want is constantly sold out. Restock dates keep slipping.

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.

TB-500 arrived in two days. Tested it myself and came back clean. Will reorder.

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.

Third order with them. Semaglutide always shows up fast, though one vial this time looked filled a little low.

Order took 8 days. Tracking sat in a facility forever. Core was responsive when I emailed but the shipping experience was rough.

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.

Vials came well padded with an ice pack still cold. Appreciated the care given it was 90 degrees out.

Been using Core for my ipamorelin and CJC-1295 blend. Consistent every time, reconstitutes clean.

Product seems fine but I had to email to get a COA. Would rather just see it on the product page like other vendors do.