Sigma Compounds Reviews 99

TrustScore 5 out of 5

4.8

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Review summary

Created with AI, based on recent reviews

Evaluating 80 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the high quality of the products, noting their effectiveness and purity, with many experiencing positive results. The ordering process is described as efficient, user-friendly, and reliable, with many appreciating the fast shipping and secure packaging. Reviewers also highlight the excellent customer service, characterized by quick responses and helpful support. However, some customers experienced issues with lost orders and felt that initial support was lacking, requiring them to do extra work to resolve the problem. A few also mentioned concerns about melted ice packs upon delivery, questioning the impact on product quality, and suggested faster shipping options.

What people talk about most

Product

Customers had positive experiences with product, consistently praising the high quality, effectiveness, and... See more

Quality

Users describe positive interactions with quality, consistently praising the products as top-notch,... See more

Order

People report positive experiences with order, highlighting a fast, efficient, and transparent ordering... See more

Customer service

Clients share positive opinions on customer service, frequently describing it as solid, great, and even... See more

Delivery service

Reviewers mention positive feedback about delivery service, with many customers praising the fast and quick... See more

Reviews shaping this summary

Rated 5 out of 5 stars

I had previously written a negative review because my order had been lost by the USPS and I wasn't getting the support I felt I needed. Then I realized they're a small company and wearing many hats.... See more

Rated 5 out of 5 stars

I have been dealing with increased pain as I’ve gotten a little older. I am very active and have a labor intensive career in massage, bodywork, and physiotherapy. I have read books and articles and li... See more

Rated 5 out of 5 stars

Sigma is great because it has a face, first of all. Matthew is a well-known and respected advocate for peptide education, so it's nice to know there's a reputation on the line for a quality produc... See more

Rated 5 out of 5 stars

I've been connecting the dots between Sigma Compounds and the books published prior. One thing's rang true throughout my experience which is that I've truly felt they were on a mission to bring these... See more


Company details

  1. Biotechnology Company
  2. Medical Laboratory
  3. Vitamin and Supplements Store

Written by the company

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


Contact info

4.8

Excellent

TrustScore 5 out of 5

99 reviews

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No history of asking for reviews

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Replied to 100% of negative reviews

Typically replies within 1 week

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Rated 5 out of 5 stars

Satisfied customer

Im fairly new to the Peptide market, Sigma being my third vender. Im impressed with the shipping and customer service! Packaging is Plautium level!!! I purchased the 10/10 Bp157/ TB500 nasel spray and could not be happier. Im reading Sigma recommend books and they are educational and easy to follow! Looking forward to doing business in the future.

February 2, 2026
Unprompted review
Rated 5 out of 5 stars

Customer experience exceeds expectations

I had a great experience ordering from Sigmacompounds.com. The ordering process was fast, efficient, and very professional from start to finish. My peptides order arrived within a week, which exceeded my expectations. The packaging was exceptionally well done—clearly designed to protect the products and noticeably better than what I’ve seen from other competitors in this space. Overall, a smooth and reliable experience, and I’ll definitely be ordering again.

February 10, 2026
Unprompted review
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Rated 4 out of 5 stars

I just received my order today

I just received my order today. It was well packaged with the ice pack. The bottle and nasal spray were packed in another box with additional padding. However, the ice pack has already melted and was at room temp by the time I received it on 01/30. From the shipping tracking info, it looks like it was picked up by the carrier on 01/26. Hopefully, this does not impact the quality of the peptide.
My only complaint is they don't have faster shipping options at the time I ordered it. I hope they add it in the future. Also, I suggest the nasal spray to be plastic wrapped to ensure its sterile. It does have a cap so its no big deal.

January 30, 2026
Unprompted review
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Rated 5 out of 5 stars

Order came quickly and works…

Order came quickly and works phenomenal. I have placed 2 orders so far as well as my son and we are getting ready to make another order soon.

Awesome company!

January 30, 2026
Unprompted review
Rated 5 out of 5 stars

Sigma Compounds Above All

After purchasing from numerous vendors, Sigma Compounds stands head and shoulders above the rest. Their product quality is unmatched, their presentation is exceptional, and their customer service sets a new standard. They’ve earned my trust — and my business — for life.

January 30, 2026
Unprompted review
Rated 5 out of 5 stars

Only place I buy

Great customer service, top quality peptides with great shipping time! Definitely recommend!

December 3, 2025
Unprompted review
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Rated 5 out of 5 stars

There are so many fly by night…

There are so many fly by night producers out there. Sigma has fair prices, and their products are top quality. Ordering is a breeze, and shipping is fast(not withstanding USPS incompetence! They earn your business!

January 30, 2026
Unprompted review
Rated 5 out of 5 stars

Sigma Compounds is 5 star worthy

Sigma Compounds is my go to company for researching peptides in Ehlers-Danlos Syndrome. All of the products are quality tested and I trust them fully. Matthew and/or Customer Service are easy to contact and reply promptly when I have had a question. Ordering is simple, the website is easy to navigate to find exactly what you need. Order fulfillment & shipping are prompt, products come beautifully & safely packaged, sealed, & sterile. I would only buy peptides from Sigma!

January 28, 2026
Unprompted review
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Rated 5 out of 5 stars

Sigma Compound is the best research…

Sigma Compound is the best research peptides company in the world and U.S. the books are top notch and extremely helpful "Peptides made simple usage, dosing, cycling and reconstitution encyclopedia. 10 out of 10 stars.

January 1, 2026
Unprompted review
Rated 5 out of 5 stars

A trustworthy vendor!

A trustworthy vendor, fast shipping, reliable payment methods, and high-quality products. There are many peptide compound companies out there to choose from with flashy sites and crazy branding - don't waste your time gambling! Sigma is a legit supplier, and a reliable compound manufacture with consistent adn potent peptides.

January 28, 2026
Unprompted review

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