What is a Generic Drug?
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.
Minipress (Prazosin)
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Product Details
Description
Minipress is the brand name for the prescription drug prazosin. Prazosin is used to treat high blood pressure.
High blood pressure (or hypertension) is a condition where the blood is pushing too forcefully on the walls of the blood vessels. High pressure can lead to small tears in the vessels and damage to the organs. Left untreated, high blood pressure can lead to cardiovascular events like a heart attack or stroke.
Minipress works by relaxing blood vessels and reducing the pressure on the vessel walls. It belongs to a group of medications called alpha-blockers.
Fact Table
Formula
C19H21N5O4
License
US FDA
Bioavailability
~60%
Legal status
Rx-only
Chemical Name
Prazosin
Elimination half-life
2–3 hours
Dosage (Strength)
1mg, 5mg
Pregnancy
Consult Doctor
Brands
Minipress, Vasoflex
Protein binding
97%
PubChem CID
4893
MedlinePlus
a682245
ChEBI
8364
ATC code
C02CA01
DrugBank
DB00457
KEGG
D08411
Routes of administration
By mouth
Directions
Take Minipress exactly as prescribed by your doctor. The dose should be slowly increased so that the blood pressure does not drop too fast.
The starting dose is 1 mg by mouth two or three times per day.
The maximum Minipress dosage is 20 mg by mouth two or three times per day. Your doctor will slowly increase the dose until you reach the blood pressure goal.
Ingredients
The active ingredient in Minipress is prazosin.
Interactions
Common drug-drug interactions include:
- ACE inhibitors
- Angotensin receptor blockers
- Loop diuretics
- Phosphodiesterase inhibitors
- Thiazide diuretics
Cautions
When you take Minipress for the first time, take it while sitting down and wait for 90 minutes because it can cause a fast drop in blood pressure. These effects subside after a few doses. The same effect may happen anytime the dosage is increased.
Do not drink alcohol way taking this medication.
Ask your doctor or pharmacist for a full list of precautions.
Side Effects
Side effects of Minipress may include:
- Blurred vision
- Constipation
- Depression
- Diarrhea
- Dizziness
- Drowsiness
- Dry mouth
- Dyspnea
- Edema
- Epistaxis
- Fatigue
- Headache
- Nasal congestion
- Nausea
- Nervousness
- Orthostatic hypotension
- Palpitations
- Skin rash
- Syncope
- Urinary frequency
- Vertigo
- Vomiting
- Weakness
References
- Minipress [package insert].New York, NY: Pfizer; 2009.
IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.Product Code : 1652
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