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Dietary SupplementSuitable For VegetariansInositol 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 principle neurotransmitter while phosphorus-containing compounds of inositol in nerve cells help regulate nerve impulses.