Inositol and choline are B vitamin-like compounds which have similar functions. Both are important components of phospholipids, which make up cellular and other biological membranes, and both play a role in healthy nerve function. Choline is an essential ingredient for the production of acetylcholine, a principal neurotransmitter, while phosphorus-containing compounds of inositol in nerve cells help regulate nerve impulses. The suggested use is to take 1 tablet daily. Please contact our in-house customer support if you have any questions.