Oxandrolone is most certainly a hepatotoxic steroid. It does not carry the strongest level of hepatotoxicity among anabolic steroids, but it is stronger than most. This is due to it being a C17-aa anabolic steroid. All C17-aa steroids are hepatic, but the level of toxicity varies greatly between them. Due to this steroid’s strong hepatotoxicity, this is why total use must be limited (see administration section).
Due to use, those who supplement with Anadrol will find their liver enzyme values increase. An increase in values is not a sign of damage but rather a sign of stress that can lead to damage if responsible practices are not followed and the stress is allowed to remain. Proper dosing and duration of use protocols are imperative when it comes to this steroid. Further, it is important the individual avoids excess alcohol consumption when supplementing with this steroid due to the liver stress such consumption will cause. In fact, most will find avoiding all alcohol to be best during use. If this is a problem and you are supplementing for the purpose of performance enhancement remember there is nothing on earth that is as anti-performance as alcohol. Those who supplement are also encouraged to limit their use of Over the Counter (OTC) medications. Many OTC medications carry strong hepatic natures, and the added stress can be extensive when coupled with Anadrol. Use should be limited to when only absolutely needed. If these rules can be followed, once use is discontinued liver enzyme values will return to normal and no damage will be done. As a final note, Anadrol should not be used if the liver is unhealthy.
Although I am usually not inclined to posit speculations on why a particular drug does or doesn't do something, in this case I will. Im guessing that the higher doses of Anadrol cause enough appetite suppression (at least anecdotally) to make eating rather difficult. It can also increase insulin resistance and glucose intolerance (5). This has the effect of making macronutrient absorption more inefficient, and could also be a factor in reducing gains when the dosage goes over 100mgs/day. Unfortunately, Anadrol also has a reasonably profound effect on your body's natural hormonal system, on par with most other oral steroids , but not as bad as most injectables, and its certainly not as harsh on your lipid profile as many anabolics are
It should be noted that in theory if one was to consistently suppress your natural estrogen levels for a long period of time, this would negatively impact your health, including your cholesterol. Due to the ability of Letrozole- to inhibit estrogen so much, this should definitely be a concern to most users. However the research that has focused on the relationship between use of letrozole and cholesterol levels is rather inconsistent in it's findings. Many studies have concluded that the compound is detrimental to both a user's HDL and LDL cholesterol levels, while other research has found no link. Obviously individuals are best served to monitor their cholesterol while using any compound via blood tests however barring that, letrozole should simply not be run for extended periods of time if at all possible. Doing so could cause serious medical complications.
Along with the issues related to blood lipids is the fact that many users complain that their libido is dramatically reduced when using the compound. This is related to the fact that estrogen is partly responsible for the regulation of an individual's sex drive. Since Letrozole- is so potent it can often drive estrogen levels too low and this inhibits a user's libido. To avoid this users can lower dosages, but some anecdotally report that even extremely low doses of the drug can cause problems. If this is the case a less potent compound such as exemestane or anastrozole may be a more appropriate option.