A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.
The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.
Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.
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Mirena is a sterile, progesterone-releasing intrauterine device (IUD). It can be prescribed and inserted by your healthcare provider for the following reasons:
IUDs are inserted through the vaginal canal into the uterus. They are designed to release levonorgestrel 20 mcg per day over five years. Mirena should be replaced by a healthcare provider every five years. Fifty percent of the original amount of drug remains after five years.
Mirena should only be inserted by a licensed and trained healthcare professional. Before purchase, confirm that your healthcare provider agrees.
The active ingredient in Mirena 52 mg is levonorgestrel, which is released at a rate of 20 mcg per day.
IUDs are less likely to cause drug-drug interactions because the drug is released directly into the uterus, and only a small amount reached the blood.
However, tell your doctor and pharmacist about all the medications you are taking before starting Mirena. Drug-drug interactions may include:
If you become pregnant while Mirena is inserted, it should be removed by your healthcare provider.
Use caution if you are taking anticoagulants while using Mirena.
Use caution if you have a history of migraines.
Use with caution if you have a history of cardiac problems like high blood pressure, arterial disease, or myocardial infarction.
Common side effects may include: