Product Guides

Nutricost L-Theanine provides 200 mg per serve as capsules or as an unflavoured powder. Here is what L-theanine is, what the research says and who should check first.

Horbaach L-Theanine provides 400 mg of L-theanine per serve in 120 and 400 count bottles. Here is how that compares with research doses and who should check first.

Life Extension L-Theanine is a single ingredient L-theanine supplement. Here is what L-theanine is, what the research says and who should check first.