Prescription drugs are drugs that are not locally available
without a physician's prescription. A prescription drug is a licensed
medicine which is obtained only by prescription. The prescription drugs are
regulated by legislation and different from over-the-counter (OTC) drugs
which can be obtained without a prescription. They are also known as
non-prescription
drugs. In North America, "Rx" is often used as a short form
for prescription drug. In European countries, any kind of prescription drug
has a monograph or Patient Information Leaflet (PIL) that gives detailed
information about the drug.
Vasodilators: In the forms
used for treating high blood pressure (tablets or injections), these
drugs are available only with a physician's prescription.