My Husnand Takes 50 Milligrams Of Metropolol At 9 O'clock

My husnand takes 50 milligrams of Metropolol at 9 o'clock every night because in at 8 o'clock in the morning with a sore butt this is because he ended up in the hospital about 5 or 5 months ago for afib heart now but him making a mistake and smoking crystal meth today and if you take that pill right now at 9 o'clock please tell him what will happen