Drug Interaction Report

GENERALLY AVOID: Drugs that directly affect the pituitary secretion of growth hormone (e.g., somatostatin, insulin, glucocorticoids, cyclooxygenase inhibitors such as aspirin and nonsteroidal anti-inflammatory drugs) and drugs that may transiently elevate growth hormone levels (e.g., clonidine, levodopa, insulin) may impact the accuracy of the macimorelin diagnostic test.

MANAGEMENT: Concomitant use of macimorelin with drugs affecting growth hormone levels should generally be avoided. A sufficient washout period following discontinuation of these drugs is recommended prior to macimorelin administration.

ADJUST DOSING INTERVAL: Food reduces the oral bioavailability of macimorelin. According to the product labeling, administration with a liquid meal decreased macimorelin peak plasma concentration (Cmax) and systemic exposure (AUC) by 55% and 49%, respectively, compared to administration under fasting conditions (i.e., for at least 8 hours).

MANAGEMENT: Macimorelin should be administered after fasting for at least 8 hours.