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Accutane

Isotretinoin is a generic medication used for the treatment of severe acne and most commonly known under the brands Accutane and Roaccutane. It is a retinoid, meaning it is derived from vitamin A and is found naturally in the body, produced by the liver in small quantities. more...

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History

Prior to the development of isotretinoin, the mainstay treatment of severe acne was oral antibiotics such as the tetracyclines and erythromycin. While these drugs have proven efficacy, they worked against only one contributing factor of acne, Propionibacterium acnes bacteria. The antibiotics gradually became less effective over time as more resistant strains of the bacterium became prominent.

An early, effective treatment of acne was high doses of the fat soluble vitamin A. At these dose levels (sometimes 500,000 IU per day) effects such as reduced production of sebum and dry hair could be noticed. However the vitamin also had many other prominent side effects which inhibited its widespread use.

The development of the derivative of retinoic acid, isotretinoin (13-cis-retinoic acid), and its release in 1982 by Hoffmann-La Roche was a great step forward in the treatment of acne. The synthetic compound provided better therapeutic benefit than vitamin A, while also producing fewer side effects. In February 2002 Roche's patents for isotretinoin expired, there are now many other companies selling cheaper generic versions of the drug.

Today isotretinoin is usually prescribed after other acne treatments have failed to produce results. The treatment of acne usually begins with topicals, moves onto oral antibiotics (or a combination) and finally isotretinoin therapy. This is because other treatments, while less effective than isotretinoin, produce far fewer side effects.

Brand names

Isotretinoin is produced under many brand names by many manufacturers. It is available typically as 5 mg, 10 mg, 20 mg and (in the USA) 40 mg capsules.

Some brands of isotretinoin include:

  • Accure® by Alphapharm
  • Accutane® and Roaccutane® by Roche
  • Aknenormin® by Hermal
  • Amnesteem® by Mylan
  • Ciscutan® by Pelpharma
  • Claravis® by Barr
  • Isohexal® by Hexal Australia
  • Isotroin® by Cipla
  • Oratane® by Douglas Pharmaceuticals
  • Sotret® by Ranbaxy

Indications

Isotretinoin is indicated for treatment for a number of dermatological conditions, most commonly acne. It is generally not used as a first-line treatment due to the potential side effects. Antibiotics (such as the tetracyclines) are usually prescribed before isotretinoin.

Severe forms of acne (conglobata, fulminans and nodulocystic) as well as acne that scars can be successfully treated with isotretinoin.

Acne that has not responded to other treatment will usually respond to isotretinoin. Dysmorphophobic patients may also be prescribed isotretinoin.

Read more at Wikipedia.org


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Audit: Accutane prescribing restrictions followed - Avoiding Teratogenicity
From OB/GYN News, 9/15/02 by Betsy Bates

VICTORIA, B.C. -- An initial audit shows that physicians and pharmacists are adhering to the Food and Drug Administration-mandated System to Manage Accutane-Related Teratogenicity.

Among 783 pharmacies nationwide that were monitored after SMART went into effect in April, 754 (96.3%) were in full compliance with the new rules, which permit pharmacists to fill only those prescriptions that bear physicians' stickers verifying that patients have undergone required pregnancy risk counseling and pregnancy tests.

"We're certainly encouraged by these results," according to Dr. Ronald Gottschalk, who is medical director for dermatology at Roche Laboratories, Nutley, NJ.

Although the new regulations are "somewhat cumbersome," adherence to them will diminish the chances of a mandatory registry for all physicians and patients using the category X known teratogen, Dr. Gottschalk said at the annual meeting of the Pacific Northwest Dermatological Society.

Dr. Gottschalk shared with the meeting a number of Roche-sponsored studies shedding light on the need for better pregnancy prevention efforts among Accutane users.

For example, one survey of mall shoppers found that 91% believed they were well versed in facts about contraception, but 37% chose the least effective birth control method, withdrawal, he commented.

To be sure, Accutane users appear to be far better informed than the general public.

While the number of patients initiating Accutane therapy increased fourfold over 10 years to 250,000 in 2000, the number of Accutane pregnancies has remained steady at about 150 per year, he said at the conference.

Over the years, Accutane-related pregnancies have most often been due to the following factors:

* Patients failing to adhere to absolute abstinence, using ineffective or inconsistent contraception, experiencing contraceptive failure, or having unexpected sexual activity.

* Confusion over the timing of pregnancy tests.

* False-negative pregnancy tests.

* Patients failing to wait until the correct day of the menstrual cycle to begin taking Accutane.

* Misinformation about contraceptive methods.

* Patients receiving more than a 1-month supply of the drug.

* Failure of practitioners to perform monthly pregnancy tests and/or contraception counseling.

RELATED ARTICLE: Accutane-Related Pregnancies

Among 150 pregnancies per year:

* 64% occurred while patient was established on Accutane therapy.

* 14% were pregnant at the time of the first office visit.

* 12% didn't wait to begin prescription until next menstrual cycle.

* 10% complete information was unavailable.

Average age of the woman who becomes pregnant on Accutane is 26.3 years.

Percentage of women who become pregnant on Accutane but recall physician's warnings about birth defects is 90%.

Source: Dr. Ronald Gottschalk of Roche Laboratories

COPYRIGHT 2002 International Medical News Group
COPYRIGHT 2002 Gale Group

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