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Lithium 150 mg. Lithium (Eskalith Â® , Eskalith CR Â® , Lithobid Â®) is a medication used for the treatment of bipolar disorder. It is available by prescription only and comes in several different forms and strengths, including:1  Lithium carbonate 150 mg capsules. Lithium carbonate 300 mg tablets. 2  Lithium carbonate 300 mg extended-release tablets (Lithobid). 3  Lithium carbonate 450 mg extended-release tablets (Eskalith CR). 4  Lithium citrate syrup, containing 8 mEq lithium per 5 mL, which is equivalent to 300 mg lithium carbonate per 5 mL or per teaspoonful.
Lithium (from Greek: Î»Î¯Î¸Î¿Ï lithos, stone) is a chemical element with symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements.Under standard conditions it is the lightest metal and the least dense solid element.he lithium ion Li + administered as any of several lithium salts has proved to be useful as a mood-stabilizing drug in the treatment of bipolar disorder, due to neurological effects of the ion in the human body.