INH Isoniazid Biphasic Insulin Aspart
ModerateThe leaflet text for Biphasic Insulin Aspart does not name isoniazid among the substances that increase its blood sugar lowering effect. It does say that some other substances affect glucose metabolism and may need a dose adjustment and particularly close monitoring.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.