Inderal (Propranolol) Dosage and Side Effects
INDERAL is a prescription drug used to treat high blood pressure (hypertension). It's also used to treat severe chest pain (angina), migraines, thickened heart muscle (hypertrophic subaortic stenosis), tremors, a rare tumor called pheochromocytoma, and a movement disorder known as akathisia.
Proper Use of this medication
INDERAL is available in tablet form in doses of 10, 20, 40, 60 and 80 milligrams (mg).
It is also offered as INDERAL LA, a long-acting or extended-release medicine.
Doses vary, depending on the condition being treated.
- For high blood pressure, 40 mg is a typical starting dose twice daily, sometimes added to a diuretic drug.
- For angina, total daily doses of 80 to 320 mg
- For atrial fibrillation, a heart rhythm problem, 10 to 30 mg three or four times a day
- For migraine, the starting dose is 80 mg divided over the day, increasing up to about 240 mg a day
Symptoms of overdose may include weakness, fainting, or an irregular heartbeat.
Call your doctor right away if you think you’ve taking too much INDERAL, or go to the nearest emergency room.
Missed Dose of INDERAL
If you miss a dose of INDERAL, take it as soon as you can. However, if it is nearly time for your next dose, just resume your regular schedule. Don't double up.
Common Side Effects of INDERAL
Side effects of INDERAL that normally don't need immediate medical attention include:
- Restlessness, irritability
- Trouble sleeping, drowsiness, sleepiness, unusual dreams
- Dry mouth
If these persist or bother you, ask your doctor what to do.
Severe Side Effects of INDERAL
Certain side effects warrant a call to the doctor right away. These include:
- A cough that produces mucus
- Breathing problems
- Chest tightness
- Abdominal pain, tenderness
- Bloody urine, nose, stools
- Blurry vision
- Skin peeling, blistering, loosening
Warnings and Precautions
INDERAL can make angina (chest pains) worse and perhaps cause heart attack if you stop taking it abruptly.
Never stop taking INDERAL without first consulting your doctor, who will instruct you on how to safely discontinue its use, if necessary.
If you have bronchospastic lung disease, beta blockers such as INDERAL should be taken with caution.
Low blood sugar can occur while taking INDERAL, especially after intense exercise.
If you have liver or kidney problems, your doctor will prescribe INDERAL with caution.
The medicine may interfere with a glaucoma screening test.
Pregnancy and INDERAL
Animal studies have shown that INDERAL may have an adverse effect on a developing fetus, but no adequate studies have been done in people.
However, the benefits of taking INDERAL during pregnancy may outweigh the risks.
Discuss the pros and cons with your doctor.
INDERAL is excreted in breast milk, so breastfeeding mothers should take INDERAL with caution. Ask your doctor what course of action is best.
Interactions with this medication
Thioridazine, an antipsychotic drug, should not be used with INDERAL.
Using INDERAL with certain other medicines is not usually recommended. These include:
- Albuterol (Ventollin, Pro-Air, others)
- Epinephrine (Epi-Pen)
- Bupropion (Wellbutrin, Budeprion, Buproban, others)
- Clonidine (Catapres, Clophelin)
- Fingolimod (Gilenya)
- Verapamil (Calan, Verelan, Covera-HS)
INDERAL and Alcohol
Drinking alcohol while taking INDERAL may increase the medication’s effects on lowering blood pressure, at least initially.
If you drink while on INDERAL, you may feel dizzy, lightheaded or faint, especially when you first start the medicine.
Ask your doctor how to manage alcohol intake while on INDERAL.
INDERAL and Other Interactions
If you take a multivitamin, do not take it at the same time as INDERAL.
Doing so may make the INDERAL less effective. Allow two hours between taking the medicine and the vitamin.
Be sure to tell your doctor about any prescription, non-prescription, over-the-counter (OTC), illegal and recreational drugs you may be taking, as well as herbal remedies, nutritional and dietary supplements.
Other related products
The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.