Lithium is an essential mineral element. Deficiencies can occur due to diet and water sources and may be depleted with the consumption of mercury, aspartame, MSG, BPA, and other excitotoxins. Recent research is now discovering numerous applications for low dose Lithium from 1-10 mg per day. Lithium at this intake range may provide the following physiological benefits, according to Timothy Marshal, PhD: Assist in vitamin B12 and folate transport and uptake Promotes brain health and function May improve cognition Improves mood Reduces nervousness Safe for all ages. No color or scent.