Inderal is a prescription medication used to prevent migraines, decrease the severity of tremors associated with familial or essential tremor, and treat several other conditions related to the circulatory system. As a beta blocker, the drug is effective at decreasing heart rate and blood pressure. These effects can reduce the risks that accompany long-term hypertension. Inderal comes in tablet form and is usually taken several times a day right before meals.
What Is Inderal?Inderal® (propranolol hydrochloride) is a prescription medicine that has been licensed to treat several conditions related to the heart and blood vessels.
(Click Inderal Uses for more information on what it is used for, including possible off-label uses.)
The medication is also available in a long-acting form called Inderal LA (see Inderal LA).
Who Makes Inderal?
Brand-name Inderal tablets (originally made by Wyeth Pharmaceuticals) are no longer available. Generic versions are available and are made by numerous different manufacturers.
How Does It Work?Inderal is part of a class of drugs called beta-adrenergic blocking agents, or beta blockers for short. As the name implies, beta blockers block beta receptors in the body. Beta receptors are located in a number of places within the body, including the heart and blood vessels. These receptors are what stress hormones (such as adrenaline) attach to and cause certain reactions in the body, such as an increase in:
- Heart rate
- The force with which the heart pumps blood
- Blood pressure (both systolic blood pressure and diastolic blood pressure).
By blocking beta receptors, Inderal causes the reverse effect of stress hormones. It decreases heart rate and both systolic and diastolic blood pressure, as well as the workload of the heart. This means that the heart requires less blood and oxygen to work properly.
For people with migraines or an essential tremor, it is not known exactly how Inderal works. However, there are beta receptors in the brain that may be involved.