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Fentora may decrease the effectiveness of pegvisomant. If you take these medications together, your healthcare provider may need to increase your pegvisomant dose.
Using Fentora with a thiazide diuretic may increase your risk for orthostatic hypotension, or a decrease in blood pressure when you stand up. Talk to your healthcare provider if you notice symptoms of orthostatic hypotension, such as faintness, dizziness, or lightheadedness, while taking these medications together.