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How long does it take for propranolol to start working?

1 doctor weighed in
Dr. Saptarshi Bandyopadhyay
Internal Medicine - Hospital-based practice

In brief: Generally in 1 day

Propranolol comes in short-acting & extended release (XR) forms.
The short-acting form works in about 1 hr to lower BP & heart rate, but wears off in about 4-6 hrs depending on individual metabolism (which is why it is dosed 3-4 times per day or more). The long-acting form starts working in about 2-3 hrs, but lasts 18-24 hrs. U shd know in 1 day or so if the dose is working to lower HR or BP.

In brief: Generally in 1 day

Propranolol comes in short-acting & extended release (XR) forms.
The short-acting form works in about 1 hr to lower BP & heart rate, but wears off in about 4-6 hrs depending on individual metabolism (which is why it is dosed 3-4 times per day or more). The long-acting form starts working in about 2-3 hrs, but lasts 18-24 hrs. U shd know in 1 day or so if the dose is working to lower HR or BP.
Dr. Saptarshi Bandyopadhyay
Dr. Saptarshi Bandyopadhyay
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