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352 reviews
Due to an influx of orders, shipping may be delayed by a couple of days.
What Is L-Serine?

L-Serine is a nonessential amino acid used in the biosynthesis of proteins that plays a part in a wide range of body functions.

L-Serine Benefits

L-Serine combines with fatty acids to create phosphatidylserine which may support brain function. It also converts into D-Serine, which may support the nervous system, and L-Serine is used by the body to create L-Tryptophan, a chemical that may support healthy sleep and mood.

  • Support brain function
  • Protect the nervous system
  • Promote healthy sleep
  • Aid healthy mood
  • Help boost muscle endurance

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Supplement Facts
Servings Size 2000 mg
Servings Per Container: -
Amount Per Capsule % Daily Value
L-Serine 2000 mg *
Other Ingredients: None
Free of: Added sugar, soy, dairy, yeast, gluten, and additives

Suggested Use: As a dietary supplement, take 2000 mg (about 3/4 tsp) once daily or as directed by a physician.

Always consult your health care provider before taking any supplements. Pregnant or lactating women, people with existing medical conditions, or people taking medications should consult their health care provider/s before taking any dietary supplement. If you experience any adverse condition after taking this dietary supplement, discontinue use immediately and consult your health care provider.

Keep out of reach of children.

Customer Reviews
4.8 Based on 352 Reviews
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Leroy K.
United States United States
I recommend this product
Still the Best

Excellent. I have had no problems dealing with Bulk Supplements.

Martha H.
United States United States
I recommend this product
L-serine for Alzheimer’s

I don’t actually use it; I buy it for my husband who has Alzheimer’s. As far as we know it is helping him. His neurologist recommended it and is pleased he is taking it.

Faye C.
United States United States
L Serine

I never recevied it, the order was canceled

Brent B.
United States United States
You Guys Are Something Else

Poor. First you screw up the order and blame a mix up the "order tag." Then, you notify me that you really are out of stock and do not know when it will be in stock. Then you refund me without asking me if I would like a substitute. ***. Get your act together.


Hello Brent, Sorry to hear you are unsatisfied. You were given a notification that one of the items you ordered is out of stock. That was a inventory error on our part and we do apologize. We do not offer substitutes or price match our own products. A refund for the item was issued.

marshall f.
United States United States

It arrived in good time. It also seemed fresh, so I am happy

June L.
United States United States
New to this supplement

I only JUST received my order so can't comment on efficacy until I've used it for awhile. I WILL say that the order was filled promptly and service was great with tracking/ delivery information so would definitely use this company in the future!