Extremely trusted!
I have always received the best quality products from Sigma in a very timely manner with tracking number in case I needed it and products packaging is awesome. Never received any order with damages to the product!
By Susan D.
Tuesday, November 3, 2026 · Customer reviews of US businesses

The Fair Hearing score
Excellent
120 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Sigma Compounds stands at the forefront of the research peptide industry, offering premium peptides. We have established strong partnerships with manufacturers who ISO 9001:2008 standards, allowing us to offer our clients exceptional pricing without compromising on quality or purity. Our commitment to delivering top-notch products ensures that we remain a reliable resource for the scientific community, and we are delighted to share these savings with our valued customers
Sigma Compounds (sigmacompounds.com) has 120 customer reviews on The Fair Hearing, with an average rating of 4.9 out of 5.
Showing 112 reviews with 5 stars · Clear filters
I have always received the best quality products from Sigma in a very timely manner with tracking number in case I needed it and products packaging is awesome. Never received any order with damages to the product!
By Susan D.
Great selection and fast shipping.
By Rod
My experience from researching a true compounding pharmacy like Seema compounds Has been beneficial to my overall experience. From the ordering process choosing what peptide to use to deliver to my home was very seamless. I have re-ordered and I’m very happy with the products that I’ve received.
By Tammy A.
Ordering was very easy thru the sigma website. Order arrived in a timely fashion and was well packed. Follow-up from sigma was also a nice feature. Cannot comment on my response to the compound because it is still to early.
By KR B.
Dash shipping and packaged well. The sprayer sprays good.
By madelyn L.
Great Customer Service from ordering to tracking to delivery. I use 2 products bpc-157 & pt-141 both work amazing & quickly. I'm 100% satisfied & on my 3rd round of ordering.
By mark J.
The process was easy and the product shipped in a reasonable time
By Sean M.
AS most are, I was hesitant to give them a shot, but boy, did Sigma deliver- shipping is lightning fast, and the products are high quality. Will be ordering from again
By Scott F.