✅ 1. Why you are not getting relief with 10 mg IR
Propranolol immediate-release (IR) 10 mg is a very low dose.
Its effect lasts only 4–6 hours, so heart rate control may be incomplete.
You were earlier on SR 20 mg, which provides 24-hour steady control, so you naturally felt better on that.
✅ 2. Switching back to SR 20 mg
For most adults, Propranolol SR 20 mg once daily is a safe and commonly used low dose for controlling:
Tachycardia due to anxiety/stress
Mild palpitations
Slightly elevated pulse
So yes, switching back is generally okay — BUT only if your doctor has not restricted the dose for blood pressure or any other reason.
⚠️ Important Safety Points
Before switching back:
Check BP → If systolic < 100 mmHg, avoid taking SR.
Check pulse → If pulse < 55 bpm, avoid.
Avoid if you have asthma, COPD, severe heart block, acute heart failure.
Take SR once daily at same time.
📌 Suggested regimen (common clinical practice)
Propranolol SR 20 mg once daily
→ Provides smooth 24-hour control of heart rate
Avoid combining SR + IR unless doctor advises.
Answered2025-11-20 14:07:48
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