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Retin-A Micro
What is acne?
Acne (acne vulgaris, common acne) is a disease of the hair follicles of the face, chest, and back that affects almost all males and females during puberty; the only exception being teenage members of a few primitive isolated tribes living in Neolithic societies. It is not caused by bacteria, although bacteria play a role in its development. It is not unusual for some women to develop acne in their mid- to late-20s.
Acne appears on the skin as...
- congested pores ("comedones"), also known as blackheads or whiteheads,
- tender red bumps also known as pimples or zits,
- pustules, and occasionally as
- cysts (deep pimples, boils).
You can do a lot to treat your acne using products available at a drugstore or cosmetic counter that do not require a prescription. However, for tougher cases of acne, you should consult a physician for treatment options.
What...
Retin-A Micro
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RETIN-A MICRO®
(tretinoin) Gel Microsphere, 0.1% and 0.04%
FOR TOPICAL USE ONLY. NOT FOR OPHTHALMIC, ORAL, OR INTRAVAGINAL USE.
DRUG DESCRIPTION
RETIN-A MICRO (tretinoin gel) microsphere, 0.1% and 0.04%, is a formulation containing 0.1% or 0.04%, by weight, tretinoin for topical treatment of acne vulgaris. This formulation uses patented methyl methacrylate/glycol dimethacrylate crosspolymer porous microspheres (MICROSPONGE® System) to enable inclusion of the active ingredient, tretinoin, in an aqueous gel. Other components of this formulation are purified water, carbomer 974P (0.04% formulation), carbomer 934P (0.1% formulation), glycerin, disodium EDTA, propylene glycol, sorbic acid, PPG-20 methyl glucose ether distearate, cyclomethicone and dimethicone copolyol, benzyl alcohol, trolamine, and butylated hydroxytoluene.
Chemically, tretinoin is all-trans-retinoic acid, also known as (all-E)-3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-non-atetraenoic acid. It is a member of the retinoid family of compounds, and a metabolite of naturally occurring Vitamin A. Tretinoin has a molecular weight of 300.44. Tretinoin has the following structure:
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What are the possible side effects of tretinoin topical?
Stop using this medication and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Less serious side effects may include burning, warmth, stinging, tingling, itching, redness, swelling, dryness, peeling, irritation, or discolored skin.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at...
Read All Potential Side Effects and See Pictures of Retin-A Micro »
What are the precautions when taking tretinoin gel (Retin-A Micro)?
Before using tretinoin, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: eczema.
This medication may make you more sensitive to the sun. Avoid prolonged sun exposure, tanning booths, and sunlamps. Weather extremes such as wind or cold may also be irritating to the skin. Use a sunscreen daily, and wear protective clothing when outdoors. Wait until your skin has completely recovered from a sunburn before using tretinoin.
Avoid electrolysis, waxing and chemical depilatories for hair...
Last reviewed on RxList: 12/2/2009
This monograph has been modified to include the generic and brand name in many instances.
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