If you also take cholestyramine or colestipol, take your hydrochlorothiazide and olmesartan dose 4 hours before or 4 hours after you take the other medicine.
Tell your doctor about all your other medicines, especially:
steroids;
any other blood pressure medications;
insulin or oral diabetes medicine;
lithium; or
NSAIDs (nonsteroidal anti-inflammatory drugs)--aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indomethacin, meloxicam, and others.
This list is not complete. Other drugs may affect hydrochlorothiazide and olmesartan, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.
 Hydrochlorothiazide/olmesartan drug interactions (more detail)
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