I normally take 80mg of Propranolol BID for migraines, but this isn't enough to soften my heart rate much when it comes to IV methamphetamine use. Would 160mg be an okay dose, or overkill? I'm not too worried about bottoming out my blood pressure. It took about a week of taking 120 BID to drop me to high 80's/low 50's, and my baseline blood pressure has increased since then.