How long does it take for 10mg of Propranolol to wear off

[sons2008]

I'm on it 10mg three times a day (8am, 2pm, 8pm). I haven't had any sever side effects for single doses but I'm worried that two might co-mingle and cause my BP to drop, sending me into shock.

[tinmuning]

Did your doctor prescribed you to take it 3 times a day at that interval? First of all, 10mg is too low compared to the usual dose for hypertension (that is if you are taking it to lower your BP). The usual dose should be 40mg twice daily--around ever 12 hours.

The 10mg dose is usually for atrial fibrillation where you take it before meals & before bedtime. In that case, you can take it before breakfast (around 8am perhaps) then before lunch then before going to sleep.

As for the time the drug wears off, it's around 6 to 12 hours (half-life is 3-6 hours).