When a prescription drug is approved by the Food and Drug Administration, it's protected by patent for 20 years from other manufacturers copying it and putting it on the market themselves.
|Prescription expiration dates
When you're taking any sort of prescription medication, or you're using a product that's been issued to you by prescription, it's always important that you check the expiration date.
Whenever you're taking a prescription medicine or using a prescription product for the first time, it's important for you to take certain precautions.
Sometimes you may want to have a prescription refilled at a pharmacy other than the one where you originally purchased it. There may be several reasons for this.