If you use other drugs or over the counter products at the same time, the effects of Himalaya Karela Capsulemay change. This may increase your risk for side-effects or cause your drug not to work properly. Tell your doctor about all the drugs, vitamins, and herbal supplements you are using, so that you doctor can help you prevent or manage drug interactions. Himalaya Karela Capsule may interact with the following drugs and products: