A member asked:

How long does propranolol take to work well?

A doctor has provided 1 answer

Not long: The onset of effect of 'propranolol' tablets is between 1 -2 hours, and will last for between 6 - 12 hours. Lethargy and fatigue are common sde effect which should wear off within a short period of time but must be mentioned to your doctor.

Answered 12/31/2022

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