Inderal (Propranolol Hydrochloride)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Inderal Used For?
Inderal is a medication that contains propranolol hydrochloride, primarily used to manage various heart-related conditions.
Primary Uses
Inderal is used to lower high blood pressure, prevent angina, treat or prevent heart attacks, manage irregular heartbeats, treat essential tremor, and prevent migraine headaches.
How It Works
It works by affecting the body's response to nerve impulses, reducing the heart's need for blood and oxygen, and helping to regulate heartbeats.
Good to know: Inderal is not considered addictive.
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How to Take Inderal
Follow your doctor's instructions on how to take Inderal for optimal results.
Dosage Instructions
For high blood pressure, the usual starting dose is one 40 mg tablet taken twice daily, which may be increased to 120 mg to 320 mg daily. For angina, the usual dose is 40 mg two to three times a day. For migraine prevention, adults typically take 40 mg twice daily.
What If You Miss a Dose?
If you miss a dose and it's almost time for your next one, skip the missed dose. Otherwise, take it as soon as you remember, but do not double the dose.
Important: Never double dose to make up for a missed dose.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- Nausea
- Vomiting
- Loss of appetite
- Diarrhea
- Stomach pain
- Cold hands or feet
- Dizziness
- Tiredness
- Rash
- Flushing
- Hair loss
Seek immediate medical attention if you experience:
- Depression
- Disturbed sleep
- Vivid dreams or nightmares
- Visual disturbances
- Mood changes
- Confusion
- Unexplained bruising
- Sexual problems
- Slow heartbeats
- Dry eyes
- Trouble passing urine
Impulse Control Issues
Be aware that Inderal may affect impulse control, including issues related to gambling or spending.
Important Warnings
There are specific warnings to consider before using Inderal.
Who Should Not Take Inderal
Do not take Inderal if you are allergic to propranolol or similar medications, have asthma, severe breathing issues, certain heart problems, or low blood sugar levels.
Medical Conditions to Discuss
Discuss with your doctor if you have asthma, heart problems, low blood pressure, diabetes, liver or kidney issues, or if you are fasting.
Pregnancy and Breastfeeding
Consult your doctor if you are pregnant or breastfeeding, as Inderal may affect your baby.
Elderly Patients With Dementia: Elderly patients, especially those with dementia, should use caution when taking Inderal.
Drug Interactions
Certain medications may interact with Inderal, affecting its effectiveness.
Grapefruit interaction: Grapefruit may interact with Inderal.
- Calcium channel blockers
- Digoxin
- Medications for migraines
- Diabetes medications
- Warfarin
- Theophylline
- Rifampicin
- Ibuprofen
- Indomethacin
- Cimetidine
- Chlorpromazine
- Rizatriptan
Alcohol & Driving
Exercise caution when consuming alcohol or driving while taking Inderal.
Alcohol
Alcohol can enhance the effects of Inderal, leading to increased dizziness or light-headedness.
Driving and Operating Machinery
Be careful when driving or using machinery until you know how Inderal affects you, as it may cause dizziness or tiredness.
Temperature Regulation
Inderal may increase sensitivity to cold; dress warmly in cold weather.
Storage
Store Inderal tablets in their original container in a cool, dry place below 30°C for 10 mg tablets and below 25°C for 40 mg tablets. Keep out of reach of children.
Overdose Information
If you suspect an overdose, seek immediate medical attention. Symptoms may include difficulty breathing, dizziness, extreme tiredness, or slowed heart rate.
Frequently Asked Questions
Inderal typically starts to work within a few hours, but it may take longer to see the full effects.
You can take Inderal with or without food, but it's best to take it consistently the same way.
No, Inderal is not considered addictive.
Do not stop taking Inderal abruptly without consulting your doctor, as it may worsen your condition.
It's advisable to limit alcohol consumption while taking Inderal, as it can increase side effects.
Weight gain is not commonly reported, but some patients may experience changes in appetite.
Elderly patients should use Inderal with caution, especially if they have dementia or other health issues.
If you miss a dose, take it as soon as you remember unless it's almost time for your next dose; do not double dose.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.