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Contents
Common use
Inderal, which contains propranolol, is a non-selective beta-blocker prescribed for a variety of cardiovascular and neurological conditions. It is commonly used for:
Controlling high blood pressure
Managing irregular heart rhythms
Treating chest pain related to angina
Reducing the frequency of migraines
Helping with stage fright and performance-related anxiety
Supporting recovery after a heart attack
By blocking beta-adrenergic receptors, Inderal slows down the heart rate and decreases the force of contraction, which helps reduce blood pressure and oxygen demand on the heart.
Dosage and direction
Propranolol may be prescribed from once to four times daily depending on the indication.
For blood pressure management, a common starting dose is 40 mg taken twice a day, which may be increased gradually.
In cases of migraine prevention, daily doses between 80 mg and 240 mg are typical, divided into smaller doses.
Tablets should be swallowed whole with water and taken at the same time every day.
Abrupt discontinuation should be avoided as it can lead to worsening symptoms.
Precautions
Before starting Inderal, let your doctor know if you have:
Chronic lung conditions like asthma
Blood sugar disorders such as diabetes
Impaired liver or kidney function
Overactive thyroid gland
History of mood disorders or depression
Beta-blockers can conceal symptoms of hypoglycemia, so patients with diabetes should monitor blood glucose closely.
This medication may also reduce heat tolerance, so avoid overheating during physical exertion or warm climates.
Contraindications
Propranolol should not be used if:
You have a history of bronchial asthma or severe respiratory issues
You suffer from advanced heart block or very slow heart rate
You are in cardiogenic shock
You have hypersensitivity to propranolol or any inactive components in the medication
Possible side effects
Some people may experience:
General fatigue or lightheadedness
Slower than normal heart rate
Cold extremities (hands and feet)
Restless sleep or unusual dreams
More serious effects may include:
Unexplained weight gain or swelling
Discoloration of fingers or toes
Depressive symptoms or hallucinations
Consult your healthcare provider if you notice anything concerning or persistent.
Drug interactions
Inderal can interact with other substances including:
Medications for hypertension
Anti-arrhythmic agents (e.g., amiodarone)
Anticoagulants like warfarin
Insulin and oral antidiabetic medications
Certain antidepressants like SSRIs and MAO inhibitors
Avoid drinking alcohol or consuming high doses of caffeine while on propranolol, as these may reduce its therapeutic effect.
Missed dose
If a dose is missed, take it when remembered unless it's almost time for the next scheduled dose. In that case, skip the missed dose. Never take two doses together.
Overdose
Overdose symptoms may include dangerously slow heartbeat, low blood pressure, trouble breathing, or loss of consciousness. Seek immediate medical assistance if an overdose is suspected.
Storage
Keep propranolol tablets stored at room temperature (20° - 25°C or 68° - 77°F) in a cool, dry place. Avoid storing it in humid areas such as the bathroom. Keep away from children and pets.
U.S. Sale and Prescription Policy
Inderal is classified as a prescription-only medication in the United States and is approved by the FDA for various cardiovascular and off-label uses such as anxiety or tremors.
A medical evaluation by a licensed provider is normally required before starting treatment. Both branded and generic propranolol are widely available and covered by most health insurance plans.
While most U.S. pharmacies require a doctor's prescription, Frontier Family Pharmacy offers Inderal through a verified protocol without the need for a conventional prescription, subject to eligibility screening. This exception is offered under compliant conditions and may not be available in all states.