How Effective is Inderal & What are it’s Side Effects?

Inderal or propranolol should not be used if you have serious heart ailments like “AV block”, sick sinus syndrome (unless a peacemaker is used), very slow heart rate, asthma, etc.


How Effective is Inderal?

Inderal also known as propranolol is a beta blocker that affects blood flow circulation through veins and arteries and heart.

Inderal or propranolol is used to effectively treat hypertension (high blood pressure, heart circulatory conditions, angina (chest pain), heart rhythm disorders, etc. Inderal or propranolol medicine can be used to effectively prevent and treat heart attack. Apart from that inderal or propranolol can also be effectively used to reduce migraine headache frequency and severity.

Prior to Taking Inderal


If you have any allergic reactions to inderal or propranolol do not take this medicine. Do not take this medicine if you have:

  • Slow heart rate resulting in fainting sensation
  • Asthma
  • Serious heart ailments like “AV block”, sick sinus syndrome (unless a peacemaker is used.)

You must tell your doctor if you have these health issues to make this medicine safe for you:

  • Depression
  • Slow heart rate
  • Diabetes or Low blood sugar (the medicine will make it difficult to identify if you have low blood sugar.)
  • Low blood pressure
  • Muscle disorder
  • Congestive heart failure
  • Breathing disorders, emphysema, bronchitis
  • Kidney disease
  • Liver disease
  • Thyroid disorder
  • Circulation problems (Raynaud’s syndrome)
  • Pheochromocytoma (adrenal gland tumor)

FDA pregnancy Category C: There is no evidence that inderal or propranolol can harm an unborn baby. If you are planning to become pregnant or are pregnant, tell your doctor before using Inderal.


There are possibilities the medicine can pass through breast milk to the baby. Also, inform your physician if you are breast feeding a child.

What are the Side Effects of Inderal?

You must get immediate assistance if you are experience any symptoms or allergic reactions to inderal or propranolol, in most cases, swelling of lips, throat, face, tongue, difficult breathing and hives are the common reaction.

If you experience any of these following severe side effects of inderal or propranolol, call your doctor immediately:

  • Trouble in breathing or wheezing
  • Uneven or slow heart beats
  • Vision problems, sudden weakness, loss of coordination
  • Light headed feeling like passing out
  • Rapid weight gain, shortness of breath
  • Confusion, depression, hallucinations
  • Cold feeling in feet or hands
  • Low blood sugar – sweating, headache fast heart rate, irritability, weakness, feeling jittery, weakness, confusion, dizziness.
  • Sever skin reaction – burning in eyes, swelling in tongue or face, sore throat, fever, skin pain, blistering of skin, peeling of skin, purple or red skin rash spreading on skin.
  • Liver problems – tired feeling, dark urine, jaundice (yellowing in eyes or skin), clay colored stools, upper stomach pain, nausea, itching, loss of appetite.
  • Low blood sugar in baby – crying, feeling cold, pale skin, fussiness, purple or blue skin, not wanting to eat, seizure (convulsions), consciousness loss, shallow or weak breathing, sweating.

There most common side effects experienced by people taking inderal or propranolol are as follows:

  • Insomnia (sleep problems)
  • Decreased sex drive, difficulty in having an orgasm, impotence is also the side effects of inderal or propranolol.
  • Tired feeling
  • Vomiting, constipation, nausea, stomach cramps, diarrhea

What are the Other Drugs That Might or Will Affect Inderal?

It is important for you to tell your doctor about all the drugs you are using so he can advice on which one to stop or which one to continue to get the best results of having inderal or propranolol. Here are a few medicines that you must know about

  • Steroid medicine – prednisone etc.
  • Blood pressure and heart ailment medicine – propafenone, amiodarone, verapmil, diltiazem, quinidine, etc.
  • Prostate cancer and high blood pressure medicine – terazosin, doxazosin, prazosin
  • Antidepressant medicine – desipramine, amitriptyline, imipramine, clomipramine, etc
  • Blood thinner medicine – jantoven, warfarin, Coumadin can interfere with inderal or propranolol
  • Nonsteroidal anti-inflammatory drugs (NSAIDs) – naprozen (Aleve), ibuprofen (Advil Motrin), aspirin, meloxicam, celecoxib, indomethacin, diclofenac, etc.