Moderate CYP3A inhibitors (e.g., diltiazem, verapamil, erythromycin): Limit ASPRUZYO Sprinkle to 500 mg twice daily. P-gp inhibitors (e.g., cyclosporine): Ranolazine exposure increased. Titrate ASPRUZYO Sprinkle based on clinical response. CYP3A substrates: Limit simvastatin to 20 mg when used with ASPRUZYO Sprinkle. Doses of other sensitive CYP3A substrates (e.g., lovastatin) and CYP3A substrates with narrow therapeutic range (e.g., cyclosporine, tacrolimus, sirolimus) may need to be reduced with ASPRUZYO Sprinkle. OCT2 substrates: Limit the dose of metformin to 1700 mg daily when used with ASPRUZYO Sprinkle 1000 mg twice daily. Doses of other OCT2 substrates may require adjusted doses. Drugs transported by P-gp (e.g., digoxin), or drugs metabolized by CYP2D6 (e.g., tricyclic antidepressants) may need reduced doses when used with ASPRUZYO Sprinkle.