PeptideGiants Reviews 46

TrustScore 4.5 out of 5

4.6

While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

See what reviewers are saying

Rated 5 out of 5 stars

Five Stars for Incredible SupportI am so impressed with Peptide Giants. When I ran into an issue with a recent product, their team responded instantly. They resolved the situation right away by sendin... See more

Company replied

Rated 3 out of 5 stars

Not really impressed. I've been ordering from a different company and decided to try peptide giants after peptides being out of stock at current online company. I had 1 vial with the metal crimpe... See more

Company replied

Rated 5 out of 5 stars

I accidentally omitted an item from a large order and reached out via email to ask if it could be shipped without additional cost. The following day, I received a call from Bruno, who promptly assured... See more

Company replied

Rated 5 out of 5 stars

My experience was very positive. The website is easy to navigate, loads quickly, and the information is clear. I was able to find what I needed without any issues and the seller person is so nice... See more

Company replied

Company details

  1. Biotechnology Company

Written by the company

Peptide Giants is a trusted online store focused on quality, reliability, and customer experience. We combine competitive pricing with fast fulfillment and responsive support to ensure every order is handled efficiently. We take pride in consistency, clear communication, and making sure customers can order with confidence. From checkout to delivery, our goal is to provide a smooth and dependable experience every time.

Orders placed before 6:00 PM PST will be processed the same day. Orders placed after this time will be processed on the next business day.

Fast & reliable shipping on every order

Fast processing, reliable shipping, and accurate fulfillment. We focus on delivering a smooth and dependable experience with every order.

Contact info

4.6

Excellent

TrustScore 4.5 out of 5

46 reviews

5-star
4-star
3-star
2-star
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

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

I was amazed of how fast they responded…

I was amazed of how fast they responded to my email. I emailed them at 10pm Friday and they called me at 10:05 pm that same night. Never have I gotten such a fast response and great customer support from no other company of any kind of product. And the best part was that the owner called me and was so informative, friendly, and helpful. I give them 1000⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️…………….

April 17, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi Jenny,

I really appreciate you taking the time to write this — seriously, thank you. And more importantly, thank you for always reaching out to us directly whenever you’ve had a question or needed help. That doesn’t go unnoticed.

We truly recognize you as a valued customer, and we appreciate your continued support and trust in us. Customers like you are exactly why we do what we do, and we’ll always make sure you’re taken care of on our end.

I’m glad we were able to connect quickly that night and get everything handled for you — that’s how we believe it should be. Anytime you need anything, you already know you can reach out and we’ll be there.

We always stand behind taking care of our customers when they come to us directly, and we’re grateful you gave us that opportunity every time.

And as always, it’s genuinely nice chatting with you over text messages.

Thank you again for your support — it really means a lot.

Bruno
Peptide Giants

Rated 5 out of 5 stars

I’m genuinely very happy with this…

I’m genuinely very happy with this purchase. Everything arrived quickly, and the product is exactly as expected, excellent quality and a seamless experience from start to finish. I couldn’t be more satisfied and will absolutely be ordering again.

April 18, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Daisy, this honestly means a lot—thank you for taking the time to leave a genuine review like this.

You wouldn’t believe how much of a hustle it can be for small research-only companies like ours to even get real feedback posted—and honestly, what it takes just to make sure a review doesn’t get removed or flagged. So we truly appreciate you going out of your way. It really helps more than you know.

We’re glad everything arrived quickly and exactly as expected—that’s always our goal. We work hard behind the scenes every day to keep things running smoothly and make sure our customers have the best experience possible.

We’re here to stay, and customers like you are the reason why.

Looking forward to your next order—and if you ever want an extra discount, just reach out and ask. We’ve got you.

Thank you again,
Peptide Giants 💪

Rated 5 out of 5 stars

Great customer service

Great customer service. The quality is above what I expected. Highly recommend them for your peptides. Now problem with the caps. Just pop them off. Don’t try to work them off slowly. This will make anyone’s seal tear. Watch a YouTube video if you are unsure of anything.

April 13, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi Robert,

Thank you for the kind words — we’re glad to hear you were happy with the quality and overall service. We really appreciate your feedback.

Just to clarify on the vial tops, as this can be confusing — there are generally two types used in laboratory supply packaging. Some vials have standard crimp tops designed for single access, while others (often marked with a small arrow) are designed for use with compatible laboratory dispensing devices.

With the latter, the aluminum seal is not intended to be fully removed. Applying too much force or pressure while attempting to remove it can cause the top to release suddenly — similar to a pressure pop — which may be what you experienced.

There isn’t always clear guidance available on this, so it’s a common misunderstanding and something we try to help clarify when possible.

As always, all of our products are intended strictly for research and laboratory use only. If you ever have questions about handling or packaging, feel free to reach out — we’re always happy to help.

Thank you again for your support.

Bruno
Peptide Giants

Rated 1 out of 5 stars

Hmmmm…. Not a great start. Definitely a worthless end.

Ordering ok. Fulfilled ok. Delivery ok.
Popped the top, and the whole crimp came completely off. Been dealing with these things for a while now, never had that happen.
As I’m sure most folks will know, that compromised the sterility. Faulty crimp, or cheap material. Unusable.
Haven’t reached out yet, but I’ll update after resolution is found or not. This was my first order, not exactly impressed.

Update. I find it suspicious how an unprompted review about my exact problem just happened to pop up. Nice one Robert! You almost got the people who read trust pilot to believe user error was the issue. If you had bothered to read, we both “pop the top”.
Sooooo. DO NOT BUY FROM THIS VENDOR! IF THEY DONT CARE ABOUT BUSINESS, THEY DONT CARE.
This was an excellent attempt at some prime gaslighting. If they would do this, imagine what else they don’t care about. Remember to test what you receive. Definitely don’t test it on anything you care about.
This place doesn’t exactly exude integrity.

Update! We received a mass email from PG (because we were actually customers), asking essentially begging anyone who has made a past purchase to place a review for 10% off. That’s called funeraling. It’s when you invite positive reviews to bury bad ones. We passed on our “super duper top secret extra spicy” order info to trust pilot this time rather than PG. Here is our review. Keep your 10%.
Update!! Ghosted….. no reply from phone, email, or TP. Never to be heard from again I suppose. Good job Bruno. Your customer relations is top notch.

April 13, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hello,

We have carefully reviewed our records and could not locate any order or interaction that matches this review.

We kindly ask the reviewer to provide an order number or contact us directly at cs@peptidegiants.com so we can verify and address any concerns.

If no valid order can be provided, we will proceed with reporting this review to Trustpilot because it may not be based on a genuine customer experience.

– Bruno
Peptide Giants

Hi August,

Thank you for taking the time to reach out to us directly — we truly appreciate it, especially hearing that you’re considering doing business with us again.

After taking a closer look, we were able to locate your order, which was placed under a different name. That’s why we were initially unable to match your review to a purchase on our end.

We do want to mention that we had not received any prior email, call, or message regarding this issue before the review was posted. We’re always here to help, and reaching out directly first would have allowed us to resolve this much sooner.

Regarding the product, we do have a Certificate of Analysis for that specific batch and are always happy to provide it for full transparency.

At Peptide Giants, we stand by a simple policy — the customer is always right. We were glad to issue your refund once we connected, and we would have been more than happy to do that earlier had we been contacted directly.

Again, thank you for giving us the opportunity to address this and for considering doing business with us again — it truly means a lot. We look forward to providing you with a much better experience moving forward.

Best regards,
Bruno
Peptide Giants


Hi August,
We were starting to wonder where you disappeared to after our last email exchange 🙂
When you reached out to us directly, we truly appreciated the conversation and were happy we could quickly locate the order under the different name, provide the refund, and help resolve the situation. In your email, you even mentioned reconsidering doing business with us again, so we honestly thought we had turned the experience around for you.
That’s why we were surprised to later see the updates saying we disappeared or were hiding. We’re still here, we have always been here, and we have absolutely nothing to hide. We answer emails daily, stand behind our products, and are always willing to help when customers reach out to us directly.
As mentioned before, we also have full batch COAs available for transparency, and if there is ever an issue, we genuinely do our best to make things right. No company is perfect, but we believe communication and honesty go a long way.
We still wish you the best, and if you ever decide to give us another chance in the future, we’ll be here.
– Bruno
Peptide Giants

Rated 1 out of 5 stars

They claim to have COAs on all products, but that's not true

They claim on their website that all of their products have a certificate of analysis by Janoshik. But this isn't true. For some of their products when you hover over the item they have COAs, but others don't. I checked the COA page and there were NOT COAs for all of their products. If they do have them, they're not on the product page and they're not on the COA page.

April 16, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hello,

Thank you for taking the time to share your feedback—we really appreciate it.

We’d genuinely like to look into this for you, but we weren’t able to find any order or correspondence that matches this review. If you’ve purchased from us, could you please share your order number or the email used at checkout? That will help us investigate and address your concern properly.

Regarding the COAs, we aim to keep all documentation accessible and up to date, and we’re always improving how they’re displayed. If there’s a specific product you’re referring to, feel free to point it out and we’ll be happy to review it right away.

If you’re able to provide more details, we’d really appreciate the opportunity to help.

– Bruno
Peptide Giants


Hi Jane,

Thank you for your feedback.

We previously attempted to follow up on this review by requesting additional details so we could properly investigate your concern, but we did not receive a response. We’re always open to reviewing any specific product in question and providing the relevant Certificate of Analysis when requested.

Regarding documentation, we do maintain COAs for our products and continue working on improving how they are displayed and organized across our website for easier access.

We also want to provide some general transparency for anyone reading — Trustpilot allows businesses to flag reviews and request verification when there is no identifiable order or interaction. At times, we’ve experienced situations where legitimate customers have told us their reviews were removed and were asked to provide proof of purchase, but did not complete the verification process.

Because of this, we rely heavily on direct communication. When customers reach out to us, we are always able to verify purchases and provide full documentation, including COAs, without issue.

If you’re able to share more details about the specific product you’re referring to, we’d be more than happy to review it and provide the corresponding documentation.

— Bruno
Peptide Giants

Rated 5 out of 5 stars

Outstanding customer service and responsiveness!

I accidentally omitted an item from a large order and reached out via email to ask if it could be shipped without additional cost. The following day, I received a call from Bruno, who promptly assured me he would take care of the shipping and arranged for it to be sent out right away. The item arrived just two days later. Outstanding customer service and responsiveness!

April 13, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi Tuna,

I really appreciate you taking the time to share this — thank you. I’m glad we were able to jump on it quickly and get everything handled the right way for you.

Mistakes happen, but what matters to us is how we respond, and we’ll always do everything we can to take care of our customers and make things right without hesitation.

That’s what we’re about, and that’s not changing — we’re here to stay and continue building long-term relationships with people who trust us.

Thanks again for your support, it truly means a lot.

Bruno
Peptide Giants

Rated 5 out of 5 stars

Smooth ordering process with Peptide…

Smooth ordering process with Peptide Giants — great prices, quick delivery, and reliable service. Will definitely be ordering again!

April 15, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi Lola,

Really appreciate you sharing this — glad everything went smooth for you and that you were happy with the pricing and delivery.

Looking forward to your next order! And if you ever want a little extra discount, just reach out to us directly — we’ll always do our best to take care of you.

Thanks again for the support.

Bruno
Peptide Giants

Rated 5 out of 5 stars

Great experience with Peptide Giants

Great experience with Peptide Giants. fast shipping, competitive prices, and everything arrived exactly as expected. Highly recommend!

April 14, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi K. Leaux,

Really appreciate the kind words — glad everything arrived exactly as expected and that you had a smooth experience with us.

We always aim to ship orders out fast using FedEx 2-Day, and in a lot of cases customers actually receive their packages even sooner than expected, so it’s great to hear that reflected on your end.

Thanks again for the recommendation — it means a lot.

Bruno
Peptide Giants

Rated 5 out of 5 stars

Great product and costumer service!

Just got my first order and all went well! I like the products and recommend them to everyone! Ogi

April 10, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi Ogi,

Thank you so much for this — we really appreciate you taking the time to share your experience. It means a lot to us, especially on your first order.

We’re glad everything went smoothly and that you’re happy with the products. Your support and recommendation truly mean more than you know.

Looking forward to having you back again soon.

Bruno
Peptide Giants

Rated 3 out of 5 stars

Has anyone had their payment go through…

Has anyone had their payment go through Westmark Collectives?

April 12, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi Jennifer,

Thank you for your question — and for your review.

To be fully transparent, processing payments in the research-use-only space can be challenging. It’s not always as straightforward as standard retail, and we do run into limitations with traditional credit card processors from time to time. It’s something we actively work on every day to improve and make as smooth as possible for our customers.

That said, our priority is always making sure our customers are taken care of. If a payment ever goes through or there’s any issue at all, we stand behind every order and will always do everything we can to make it right.

If you experienced something specific on your end, we’d really appreciate if you could reach out to us directly so we can take a closer look and help.

Also, if you don’t mind me asking — what could we have done better to earn that extra star from you? We’re always looking to improve and value honest feedback.

Thank you again, and we hope to assist you soon.

Bruno
Peptide Giants

Rated 5 out of 5 stars

Trusted seller & fast shipping

Trusted seller & fast shipping. Will buy again!!!

March 31, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Thank you so much Marko for your kind words. We truly appreciate your support and are glad you had a great experience with our fast shipping and service.

We look forward to serving you again soon! 🚀

Rated 5 out of 5 stars

Elated!

My order arrived in two days which felt magical. The product was packaged well and quality is exceptional.

April 10, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi Tiffany 😊

Thank you so much for your wonderful feedback! We're thrilled to hear your order arrived so quickly and that you’re happy with the packaging and product quality 🚀

We truly appreciate your support and look forward to serving you again soon! 💙

Rated 5 out of 5 stars

Really happy with the purchase

Really happy with the purchase. Everything arrived quickly and the product is exactly what I expected. Great quality and smooth experience overall. I’ll definitely be buying again.

March 19, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Hi Sindia 😊

Thank you so much for your kind words! We're really happy to hear everything arrived quickly and that the product met your expectations 🙌

It means a lot to us that you had a smooth experience, and we truly appreciate your support. We look forward to serving you again soon! 💙

Rated 5 out of 5 stars

Great experience overall

Great experience overall! The website was very easy to navigate, and the checkout process was smooth and straightforward. Everything arrived quickly and exactly as expected. I’m very satisfied with the product and will definitely be ordering again.

March 19, 2026
Unprompted review
PeptideGiants logo

Reply from PeptideGiants

Thank you so much for your amazing feedback! 😊 We're glad to hear you found the website easy to navigate and that the checkout process was smooth 🚀

It’s great to know everything arrived quickly and met your expectations. We truly appreciate your support and look forward to serving you again! 💙

Rated 5 out of 5 stars

Really great experience!!

Really great experience!!! Answered all my questions and provided lots of information on where I can do my own research to ensure I was knowledgeable of what I was purchasing. The ease of ordering and turn around time truly made this whole experience extremely positive. Definitely will continue to purchase my products with them.

February 9, 2026
Unprompted review
Rated 5 out of 5 stars

The best around!

Great and fast service, they answered all my questions with ease and made me feel like I was supported in my purchase. Would recommend again!

March 9, 2026
Unprompted review

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.

Learn more about other kinds of reviews.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look