I have ordered from James twice now. Both times receive top notch customer service. Down to answering questions earlier in the morning than should be……had an ups issue and James jumped right in making... See more
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Review summary
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Zenith was a pleasure to deal with, UPS had a few hiccups with my order and James reached out proactively to let me know what was going on. The communication was greatly appreciated and I’ll absolutel... See more
Company replied
Great company, products showed up quickly and very competitive prices, well tested and work great! Will be back again for restock. I made a mistake ordering and owner personally corrected it, great pr... See more
Company replied
Easy to order using crypto with a nice discount using that payment method. Product sent out next business day. Label looked great. Packing was great. All products received without issue.
Company replied
Company details
Written by the company
Zenith Bioscience is a U.S.-based supplier focused on providing research-use-only peptides and related compounds. We emphasize transparent documentation, consistent labeling, and careful order handling from fulfillment through delivery. Our goal is to operate with professionalism in a space where trust and clarity matter. We prioritize clear communication, accurate order processing, and making relevant product information available so customers can make informed decisions. Zenith Bioscience is an independent company operating exclusively under this name. We welcome honest feedback and use it to continually improve our processes and customer experience.
Contact info
United States
- zenithbioscience.com
4.8
Excellent
56 reviews
No history of asking for reviews
This company hasn't invited their customers, so reviews may not be representative
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Couple orders in now and had only…
Couple orders in now and had only consistent fast responses and shipping. Great product selection and quality that fit my testing needs. I will continue place my orders and have referred others to Zenith Bioscience. Thank you!!
28 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you for the continued support.
I'm glad the communication, shipping, and product selection have been consistently meeting your expectations. Referring others to Zenith is a huge compliment, and I truly appreciate the trust.
Looking forward to taking care of your future orders.
– James
Zenith Bioscience
I ordered from James for the first time…
I ordered from James for the first time last week. All my items arrived in a timely manner with no issues. He even threw in a thank you card ,which is a nice touch. I’d recommend Zenith Bioscince based on their pricing , honesty and consistency.
28 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you for giving Zenith a try.
I'm glad everything arrived smoothly and that the thank you card didn't go unnoticed. I appreciate the kind words about our pricing, honesty, and consistency.
Thanks for the recommendation and the support.
– James
Zenith Bioscience
Reply from Zenith Bioscience
Thank you for the support.
Short and simple—I’m glad everything arrived quickly and met your expectations. I appreciate you taking the time to leave a review.
– James
Zenith Bioscience
Zenith was a pleasure to deal with
Zenith was a pleasure to deal with, UPS had a few hiccups with my order and James reached out proactively to let me know what was going on. The communication was greatly appreciated and I’ll absolutely be doing business in the future with ZB! Thanks
28 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you for the review.
Shipping issues are never ideal, so I always try to stay ahead of them when I can. I'm glad the communication was helpful and that everything ultimately made it to you.
I appreciate the support and look forward to working with you again.
– James
Zenith Bioscience
Happy customer
To James and the team at Zenith Bioscience. Thank you very much for your awesome customer service and excellent products backed with the best COA's in the game 💪🏽❤️🤓
29 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you for the kind words and the support.
I'm glad you've had a great experience with both the products and the service. A lot of effort goes into the testing and documentation side of things, so it's awesome to hear that it's something you value.
Thanks again for being part of the Zenith community.
– James
Zenith Bioscience
Extremely great pricing and excellent communication
Extremely great pricing and excellent customer service. 100% always wants to make sure he is taking care of customers and what they want. Super kind and honest. Ships super fast too.
23 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you, I really appreciate that.
Taking care of customers is something I take seriously, and I'm glad that came through in your experience. Thank you for the kind words about the service, shipping, and overall experience.
I'm grateful for the support.
– James
Zenith Bioscience
Reply from Zenith Bioscience
Glad to hear it. Keeping the ordering process simple and getting orders out quickly are both things I focus on.
Thanks for the support, and I'm happy to hear you've been pleased with the products.
– James
Zenith Bioscience
Great product
Great product, fair prices and quick delivery. Will continue to support.
25 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you for the support.
Glad you've been happy with the products, pricing, and delivery. Earning repeat customers is always the goal, and I appreciate you sticking with us.
– James
Zenith Bioscience
James is absolute top notch with…
James is absolute top notch with Zenith. Amazing selection and thorough communication in a timely manner as well as super fast shipping. My go to seller now for all things biohacking!
30 May 2026
Unprompted review
Reply from Zenith Bioscience
Really appreciate that.
I'm glad the communication, shipping, and product selection have all hit the mark for you. Being someone's go-to is something I never take for granted.
Thanks for the support.
– James
Zenith Bioscience
James is a great person and have great…
James is a great person and have great products.
27 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you for the kind words.
I appreciate the support and am glad you've had a good experience with both the products and service. It means a lot to earn your trust.
– James
Zenith Bioscience
Amazing company
Amazing company. Fast shipping. Prices are to notch. Have recommended to several family and friends.
21 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you for the support and for spreading the word.
Recommendations to friends and family are one of the biggest compliments a business can receive. I'm glad you've been happy with the pricing, shipping, and overall experience.
I truly appreciate it.
– James
Zenith Bioscience
I have been using Zenith Bioscience for…
I have been using Zenith Bioscience for several months now. The service and quality are top notch! I have recommended James and his company to several people now and will continue to do so!! Pricing, delivery and service are always awesome! I also, like that Zelle is available as an option! Thanks James! Love this company!!
22 May 2026
Unprompted review
Reply from Zenith Bioscience
Thank you for the continued support and for recommending Zenith to others.
Hearing that you've trusted us for several months and have referred friends means a lot. I'm glad the service, delivery, and overall experience have continued to meet your expectations.
Thanks again for the support—I truly appreciate it.
– James
Zenith Bioscience
Zenith and James 10/10
I have ordered from James twice now. Both times receive top notch customer service. Down to answering questions earlier in the morning than should be……had an ups issue and James jumped right in making calls and figuring it out tyring to help. 10/10 recommend, if that isnt enough yes the products are top tier.
18 May 2026
Unprompted review
Reply from Zenith Bioscience
Really appreciate this review.
I know the UPS situation was frustrating, so I’m glad we were able to get it sorted out quickly. I try to be as responsive and hands-on as possible when issues come up.
Thank you for the support and the trust. Means a lot.
– James
Zenith Bioscience
Nothing but great experiences and the…
Nothing but great experiences and the products are consistent every time.
1 May 2026
Unprompted review
Reply from Zenith Bioscience
Appreciate that. Consistency is the goal every time, so glad that’s been your experience.
Thanks for sticking with us.
– James
Zenith Bioscience
Fast shipping and great price
9 May 2026
Unprompted review
Reply from Zenith Bioscience
Glad to hear it. Simple, fast, and fairly priced is exactly what I aim for.
Appreciate the support.
– James
Zenith Bioscience
Super fast shipping and was carefully…
Super fast shipping and was carefully packaged. Customer service (James) is on point and prices are wonderful. I will definitely be using this company from now on
2 May 2026
Unprompted review
Reply from Zenith Bioscience
Appreciate this. Glad everything showed up quickly and packed the way it should.
Thank you for the kind words on service and pricing—means a lot. Looking forward to taking care of you going forward.
– James
Zenith Bioscience
My first order was a amazing experience
My first order was a good experience, the website is designed so well and professional, seeing James give constant updates on Tik tok is something I appreciate, will definitely be ordering again!
28 April 2026
Unprompted review
Reply from Zenith Bioscience
Appreciate you giving us a shot for your first order.
Glad the site made things easy and that the updates on TikTok have been helpful—that’s something I try to stay consistent with. Thanks for the support, and I’ll be ready for the next one.
– James
Zenith Bioscience
This was my first time ordering
This was my first time ordering . The ordering and payment process was efficient and easy.
I like that Zelle is an option.
I received my product 2 days later. The package was such that kept the items protected during shipping .
I would order again from this company.
6 May 2026
Unprompted review
Reply from Zenith Bioscience
Appreciate you giving us a shot for your first order.
Glad the process was smooth, Zelle worked well for you, and everything showed up quickly and protected. That’s exactly how it should go.
Looking forward to the next one.
– James
Zenith Bioscience
Great response time
Great response time! Easy and friendly service and super fast shipping! 2 days from order to delivery and I don't live in a main service town. Quality of the product was great! Will order again soon.
28 April 2026
Unprompted review
Reply from Zenith Bioscience
Appreciate this!
Glad the service, shipping, and quality all came through. Looking forward to the next one.
– James
Zenith Bioscience
The shipping was extremely fast
The shipping was extremely fast. I received my order in just two days, and the quality of the product is great. You can’t really beat the prices, either.
30 April 2026
Unprompted review
Reply from Zenith Bioscience
Glad it got to you quickly—that’s always the goal.
Appreciate the feedback on the quality and pricing as well. Thanks for the support.
– James
Zenith Bioscience
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