Your provider likely will slowly raise your dose until you're taking 160 mg to 240 mg daily. If the medication isn't working for you after 4 to 6 weeks, your provider may have you stop taking it. In this case, they'll have you slowly lower your dose over several weeks to avoid side effects from stopping too quickly.

Does propranolol stop working after a while?

How Long Does Propranolol Last? Propranolol has a half-life of three to six hours, meaning about half of the dose will still be active in your body after three to six hours.

Does propranolol become less effective over time?

The tablets do seem to become less effective over time, as I think your body starts to get used to them, but they have been really useful in helping me manage my anxiety and get on with my life when I need to!