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

5-star
4-star
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1-star

No history of asking for reviews

This company hasn't invited their customers, so reviews may not be representative

Replied to 100% of negative reviews

Typically replies within 1 week

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Rated 2 out of 5 stars

Customer service sucks

I will give the product 4 stars but their customer service sucks. Actually it is worse than that. It is non existent. I accidentally ordered the wrong thing and wanted to change the order BEFORE it was shipped. I have sent three messages. Zero response. Disappointing.

28 July 2025
Unprompted review
Sigma Compounds logo

Reply from Sigma Compounds

We take all feedback seriously, but after thoroughly checking our records, we have no customer or order under your name, nor any pending customer service issues.

Our team responds promptly to all legitimate inquiries, and we have always gone above and beyond—even sending replacements without requiring returns when appropriate. We maintain clear records of all interactions and orders, and there is no trace of any such request or issue from you.

We believe this review may be based on a misunderstanding or may not be genuine. If you believe there’s been a mix-up, please contact us directly with your order number—we’re always here to help.

Thank you.

Rated 5 out of 5 stars

I personally had a great experience…

I personally had a great experience with Sigma. They have great products that do exactly what they are for. Great quality,they even come in fancy boxes.i have a drawer with a ton of the Sigma boxes,which should tell you I have been back to purchase several times. I am an affiliate,I try to sell the product to friends,also got a few of them to go with peptides after they saw my results.Thanks Sigma for having #1 peptides in my book.

20 July 2025
Unprompted review
Rated 5 out of 5 stars

Sigma has a real reputation!

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 product.

Most companies are mysterious, which makes for a major trust problem in an industry that already has a certain amount of risk that makes many people uncomfortable.

I have never had a bad experience, and Matthew has been great when I have needed to contact him.

15 July 2025
Unprompted review
Rated 5 out of 5 stars

Decrease in pain…

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 listened to countless podcasts on various supplements to help combat the issues that come along with the aging process. I have been using peptides for about 6 weeks and am so pleased with the results. I have tried a few and am happy to report I am virtually pain free. I am sleeping great (which has eluded me for years) and am toning up and losing a little excess weight. It has really helped me maintain my interests and my busy work schedule.

13 July 2025
Unprompted review
Rated 5 out of 5 stars

Very happy

Having very good luck with the product. Easy payment system, fast shipping with tracking.

2 July 2025
Unprompted review
Rated 5 out of 5 stars

Confused about peptides?

Confused about peptides? Sigma Compounds is the place to go. The books, "Peptides Made Simple", provide clear, comprehensive, and concise information about peptides that no one else offers. They're the permier guide for making informed and confident selections.

2 July 2025
Unprompted review
Rated 5 out of 5 stars

My order

Thank you for getting back to me, I take accountability for not writing the order number on the Zelle I sent. I’ve bought products from this company before and had great results when I had a torn meniscus. Looking forward to continue to use your guys products in the future.

8 July 2025
Unprompted review
Rated 5 out of 5 stars

Very good bpc spray

Very good bpc spray. I had a problem where a faulty bottle leaked out and they promptly replaced it at no cost. One of the best peptides co that I have tried

29 November 2024
Unprompted review
Rated 5 out of 5 stars

Great company and peptides

I have been using Sigma compounds since they started and I have had nothing but great experiences. The peptide research I’ve been able to do bc the peptides are legit has made a huge difference. Customer service has always been great as well. I highly recommend!

9 July 2025
Unprompted review
Rated 5 out of 5 stars

Quality and Service!

My husband and I have been using Sigma for several months now and are very pleased with the condition and care Sigma takes in the preparation and delivery of their products.

1 June 2025
Unprompted review
Rated 5 out of 5 stars

Top quality!

Great company to get your research peptides from. Top quality and fast delivery. You won't be waiting to get your research started.

1 May 2025
Unprompted review
Rated 2 out of 5 stars

You should look elsewhere

Company asks you to leave a good review for them and they will give you a gift card of 50$ to use for their products. So, I ordered 3 of their tb-500 and bpc 157 and did not feel anything on their products and I have ordered from other companies and they were way much better than sigmas. I will definitely never order from them again!

23 May 2025
Unprompted review

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