Now Foods Taurine 1000 mg Double Strength 100 Veggie Capsules

Taurine is a conditionally essential amino acid that is not used for protein synthesis, but is found mainly free in most tissues, especially in the entire nervous system.

It works in tissues by stabilizing cell membranes, aiding the transport of potassium, sodium, calcium and magnesium into and out of cells. 

Taurine helps generate and regulate nerve impulses and helps maintain fluid balance; it is also used by the body in visual pathways as well as in the brain and nervous system, where it functions along with glycine as a neurotransmitter.