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Pharmaceutical and healthcare online databases.
Over 200,000 approved drugs and health products.
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Level 4
A - Alimentary tract and metabolismA11 - VitaminsA11C - Vitamin A and D, including combinations of the twoA11CA - Vitamin A, plain
A11CA01 - Retinol (Vitamin A)A11CA02 - Betacarotene
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