Heard in Geneva:
Oxandrin May Cause Liver Toxicity
by Michael Mooney (Original article in issue #7, October,
1998. Updated August, 1999)
While Oxandrin is promoted as being non-toxic to the liver, the
truth is Oxandrin is a 17-alpha alkylated oral anabolic steroid so it has the
potential to burden the liver, just like any other oral 17-alpha alkylated steroid.
We have questioned that its potential for liver toxicity would be enhanced when
it is used with other liver-challenging drugs like protease inhibitors and other
standard AIDS medications, or with higher dosages. We have an answer.
At the Geneva AIDS Conference, Dr. Carl Grunfeld presented the
preliminary results of a placebo controlled dose-ranging study that used 20,
40 and 80 mg. daily doses that showed that doses of 40 and 80 mg. cause incidence
of elevated SGOT and SGPT, which may indicate liver toxicity.
Doses above 20 mg. per day were tested because 20 mg. was found
to be relatively ineffective for lean mass gain in some men. Oxandrin is a better
option for women who need about half the men's dose. Children need much less.
Although most studies tell us that Oxandrin is relatively safe for HIV-negative
people, oxandrolone produced evidence of liver toxicity in studies of boys with
kidney failure in 1980.1 We have been surprised at the number of
HIV(+) men who report to us that Oxandrin caused elevations in the blood tests
that can indicate liver toxicity. Physician's should monitor liver tests carefully
when Oxandrin, or any oral anabolic steroid is used, especially in higher doses.
Winstrol, another oral steroid is a less expensive option for
males. It appears to be somewhat more anabolic than Oxandrin, and a 6 to 18
mg. daily dose has produced good muscle gains without detectable liver burden
in males we've observed. Anadrol is another powerful option, and while it is
thought to be toxic to the liver, we had not had one report of Anadrol at doses
as high as 150 mg per day causing elevated liver enzymes until July, 1999, after
Anadrol had been on the market for about a year and a half. This male reported
that he had used Anadrol with no negative effect on his liver enzymes when he
was using the anti-HIV medications Viracept, Zerit, and Epivir. About nine months
after he ended the first Anadrol cycle he started a new cycle of Anadrol, but
this time his HIV medications consisted of a cocktail
of Videx, Viramune, Hydroxyurea, and Ziagen. Within a few months of this second
cycle of Anadrol, blood tests that can indicate liver problems became elevated.
It appears that one or more of the medications he was using had some problematic
interaction with Anadrol. While we do not know conclusively which medication(s)
may have promoted the problem, we have been hearing reports of liver toxicity
being associated with hydroxyurea used in combination with other medications
in HIV, so this should be taken into consideration.
Interestingly, he also said, "... Anadrol produced
much quicker, better results regarding muscle growth. It seemed that just looking
at weights added mass! I went from about 185 lbs to about 203 lbs in about 4
months. After stopping the Anadrol and continuing the workouts, I leveled out
at 195. The Oxandrin seems to be less effective, although to be fair, I've only
been on it for 3 weeks."
Compare Drug Toxicity
at Equal Doses
It is important to note that comparisons of studies that showed
a seeming lack of a negative effect of Oxandrin on liver enzymes with HIV(-)
and HIV(+) people related to studies of Anadrol that showed a negative effect
are not credible. When we consider that liver toxicity is a dose-related phenomena,
and then consider that the typical doses that Anadrol has been used and studied
at are often 100 mg per day, and the doses that Oxandrin has been used and studied
at are usually about 10 to 15 mg per day, there is no credible way to use data
from these studies to compare the potential for toxicity of the two steroids.
To accurately compare them each steroid must be given at the same dosage to
matched subjects.
The Grunfeld study that showed that Oxandrin caused elevated
SGOT and SGPT enzymes raises questions about whether Oxandin is just as potentially
toxic as any other steroid at higher doses. New data suggests that Oxandrin
may have significant interaction with the 3A4 p450 enzyme system that metabolizes
protease inhibitors, while this does not appear to be the case with Anadrol.(2)
Those who've had liver disease or are using protease inhibitors
(especially Norvir) should have their liver function tested regularly while
using any oral steroid and take liver protectants like evening
primrose oil, silymarin, lipoic acid, glutamine, and N-acetyl-cysteine.
Also, because oral steroids can decrease the "good"
HDL cholesterol and increase the "bad" LDL cholesterol, oral steroids
can increase the risk of cardiovascular disease (CVD). If you use oral anabolic
steroids consider taking 400 to 800 IU of Vitamin E, and 1,000 to 2,000 mg.
of Vitamin C with each meal. These vitamin antioxidants help to protect cholesterol
from the oxidation that is associated with CVD.
References
- Jones RW, et al. J Pediatr, 97(4):559-66 1980
- Thacker DL, et al. Metabolism of an anabolic androgenic steroid,
oxymetholone by human cytrochrome p450s. Clinical Pharmacology and Therapeutics.
1999;65(2): Abstract number 75.
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