Tell your doctor immediately if any of these rare but very serious side effects occur: slow/shallow/rapid breathing, fainting, fast/slow/irregular/pounding heartbeat, severe headache, shaking (tremors).

Your doctor may direct you to take a low dose at first, gradually increasing the dose to lower the chance of side effects such as shaking (tremors).

This drug may have an opposite effect on children, causing restlessness, shaking (tremors), or mental/mood changes (such as agitation, hallucinations).

Symptoms of overdose may include: shaking (tremors), chest pain, fast/irregular heartbeat, seizures.

This medication is a beta blocker used to treat high blood pressure, irregular heartbeats, shaking (tremors), and other conditions.

Infants born to mothers who have taken similar medications during pregnancy may have problems such as very deep sleep, trouble urinating, shaking (tremors), and seizures.

Propranolol has also been used for irregular heartbeats, shaking (tremors), and to control symptoms of anxiety or overactive thyroid (hyperthyroidism).

Excess manganese can cause serious side effects, including symptoms resembling Parkinson's disease, such as shaking (tremors).

Tell your doctor if any of these unlikely but serious side effects occur: mental/mood changes (e.g., confusion, hallucinations), shaking (tremors), weakness.

Symptoms after swallowing may include: shaking (tremors), seizures.