Isotretinoin (trade name: Accutane) is a
powerful drug used in the treatment of acne. Four to five months of
Accutane treatment usually leads to clearing of acne. It is a potent
medication that is very effective for nearly all types of breakouts.
Accutane is needed for moderate to severe acne that has failed other
treatments. It should be used for a severe, scarring acne. Is also
used for acne present for many years which has not respond completely
to antibiotic pills and creams. While it has many side effects, in
some ways it is safer than many commonly prescribed antibiotics. Most
other acne-controlling medicines are antibacterial agents, which are
effective only if used daily. Over two million people have taken this
drug, so a lot is known about its safety and effectiveness
Accutane is a naturally occurring derivative of vitamin A and is
detectable in the bloodstream of all people. Vitamin A in large doses
has the same effects as Accutane, both good and bad, but quickly
becomes poisonous (Important: Don't take any vitamin A while on
Accutane). Accutane is formed naturally in the body from the
Vitamin A present in the bloodstream. This is why large amounts of
Vitamin A taken during pregnancy cause the same birth defects that
Accutane does. Fortunately, because it is a naturally occurring
product, the body is able to quickly remove Accutane from the
bloodstream. It is gone from the blood within five days and has no
lasting effect on future pregnancies.
Accutane "cures" about half of those people who take it
so that they never need to do anything else for acne. In the first few
weeks of treatment, about one in five patients gets a little worse,
and one in 500 patients gets much worse. The rest either get much
better, or better for a while. There is nothing else in the world that
comes close to being this effective for severe acne. The usual patient
takes it for 4 to 6 months, but some need more and must be
"re-treated" for an additional 4 to 6 months.
The more Accutane you take, the greater the
chance you will be cured. In clinical studies comparing dosages of 10,
40 and 80 milligrams daily, all 3 dosages resulted in initial clearing
of acne. disease but there was a greater need for re-treatment with
the smaller doses (about 40, 20, and 10% of the patients,
respectively, required a second course of therapy).
Unfortunately, side effects depend on the
dose also. At the lowest doses, there are almost no side effects at
all. At the highest, everyone get rather nasty side effects. The dose
need to be adjusted to strike a balance between effectiveness and side
effects.
The common side effects of Accutane result from the drug decreasing
the amount of oil produced by the bodies oil glands. The most
important oil glands are in the skin (Sebaceous glands), but other oil
glands in the body are affected and are the reason for the side
effects the drug produces.
Side effects that are common are listed here. Frequency-the percent of
people who get the particular side effect is listed in parenthesis.
Chapped lips (90%, countered by a using Vaseline as a moisturizer and taking 800
IU of Vitamin E daily), Intestinal symptoms (5%), Urinary symptoms (5%),
Dry skin and itching (80%), Headache (5%), Rash (7%), Decreased night
vision (<1%, occurs when Accutane pushes out
Vitamin A from the eye-we think this can be reversed by eating
carrots), Dryness of nose, mild nosebleed (80%, helped by "AYR
nasal gel"), Temporary hair
thinning (10%), Irritation of the eyelids and eyes (40%), Joint and
muscle pains (15%), Increased sensitivity to sun (5%), Depression,
thoughts of suicide (<1%).
Accutane may increase the level of blood fats, sometimes to risky
levels. Occasionally it may affect the liver. That's why regular blood
tests are necessary when you are taking Accutane; these tests must
be done when you have fasted for 12 hours (no breakfast), so that the
blood fat determinations are reliable. If they are done without
fasting and are completely normal, that's OK too.
A baseline blood chemistry test is needed before you begin Accutane.
There is little risk of any damage if these precautions are followed.
The most damaging side effect of Accutane is serious birth defects if
taken during pregnancy.
It is critically important for women not to take Accutane while
pregnant, and not to become pregnant while taking it. Women who are,
or might be, sexually active while taking Accutane must use an
effective method of birth control. We cannot always trust the answer
of a teenage girl sitting next to her dad in our office to accurately
describe her sex life. This usually means oral
contraceptive pills.
Oral contraceptive pills do rarely fail, so
an additional method of birth control
such as a condom for the male partner or a spermicidal foam or sponge
is also needed.
A woman who does get pregnant while on Accutane should be prepared to
have an abortion and must state that in writing before many physicians
will prescribe it for her. None of my patients have ever become
pregnant while on Accutane, and I plan to keep it that way.
Because the birth defects caused by Accutane are so serious, it's
important not to share the pills with others. It doesn't appear that
Accutane taken by men can cause birth defects, but its best not to get
a woman pregnant while taking it.
Some people develop headaches while on Accutane. These respond to
Advil or Tylenol. If you develop a persistent headache while on
Accutane, call your physician right away. A persistent headache, which
will does not go away could be dangerous and you should stop the
medication.
Accutane rarely causes depression and thoughts of suicide. If this
were to occur stop the medicine and immediately and call your
physician. Avoid extremely vigorous exercise, as you tend to develop
aches.
Take the medicine with food, you can take the entire daily dose
with supper, this increases the absorption of the medicine. An
alternative use of Accutane is the low dose treatment. This avoids
most of the side effects, but the effect doesn’t last as long as the
full dose.