Drug Interaction

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A change in a drug’s effect on the body when taken together with other drugs, supplements or certain foods/herbs. A drug interaction may cause the drug to become less effective, cause adverse (side) effects or increase the action of the drug more than is needed. Potential drug interactions are considered by your doctor when selecting your HIV antiretroviral (ARV) treatment regimen, as well as with other medications you may be taking or needing to take. Illicit drugs can also interact with prescribed drugs.