I took one yesterday and tonight, my heart rate is below 60. It’s never that low. I haven’t taken a propranolol today because of the lowered heart rate but wanted to know if it’s from that.
The half life of propranolol is 8-10 hours, meaning half of the medication will be out of your system by 24 hours.
"The duration of action of a single oral dose is longer than the half-life and may be up to 12 hours, if the single dose is high enough (e.g., 80 mg). "
- Propranolol Information for Consumers
- Propranolol Information for Healthcare Professionals (includes dosage details)
- Side Effects of Propranolol (detailed)
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