L-Serine Capsules Brain Booster

Select quantity
30-day hassle-free money back guarantee
Icon of Guarantee

30-Day Money-Back Guarantee

Icon Of Third Party Testing

Third-Party Tested

Icon Of Vitamin Angels

1-for-1 Donation To Vitamin Angels

  • Don't Be Fooled By Cheap Imitations - Get the L-Serine you need from a Trusted, High Quality Source. A great Cognitive Health supplement for Men and Women! These L-Serine pills were designed for fast absorption and are easy on the stomach.*
  • Supports Brain Function, Attention, Memory, Focus - Peak Performance L-serine is a naturally occurring dietary amino acid, usually sourced from certain vegetable and meat sources. It promotes cognitive health including memory, focus and concentration. Serine plays important roles in the body, synthesis of protein, fatty acid, DNA and RNA, brain and nervous system function, and more!*
  • Happiness Guarantee - If you don’t absolutely LOVE this product... For ANY reason whatsoever, simply send us a message and we will be happy to offer you a fast, prompt refund. No Questions Asked! That’s how confident we are that you’ll love this product.
  • Over 300,000 Happy Customers + 1-for-1 Donation To Vitamins Angels - Peak Performance is celebrating over 300,000 happy customers and we are also very proud of our 1-for-1 donation match program. For every unit you purchase, through our partnership with the nonprofit Vitamin Angels, we will supply a child at risk of malnutrition with vitamins for 1 year! So thank you for helping us continue this great cause!


*This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Featured In

FOX Logo

Quality you can trust

Only The Best Ingredients

Only the best ingredients

We only use the highest quality, non-GMO ingredients. No artificial sugars, added sweeteners, refined flours, pesticides, hormones or antibiotics.

Third Party Tested

Third-party tested

Peak Performance is commited to the highest standards and all products are 3rd party tested to ensure they are 100% safe for you.

100% Happiness Guaranteed

100% Happiness guaranteed

If you're not absolutely satisfied with our products we will send your money back. No questions asked. No Gimmicks. No Hassle.

Loved By Customers

Customer Reviews
4.8 Based on 4 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Ed P.
United States United States


So far so good time will tell

Kirpaljit K.
United States United States

Feel relaxed

I'm not 100% sure if this helps, but I think it does help me relax.

Eleazar B.
United States United States

A better brain

My older brother is a Pastor 79 years old, he had a neurologic issue and, He lost his language skills, he was repeating everything we said. With L-Serine he is recovering the language skills. Thank you. Eleazar Benjamin

As seeen on