Thanks for submitting your question. The reason that oral Dianabol is liver toxic is because it has to be processed by the liver before it can become active in the body. Since the injectable form bypasses the liver, it has a lower risk of liver toxicity and will not elevate your enzymes in the same way. However, this does not mean that the injections do NOT cause liver-related side effects. It can still impair hepatic function, even if it does not do it to the same degree as oral dosages. And yes, you are correct that high doses will increase the risk of adverse effects over low doses.
When you supplement with Dbol, and this goes for all anabolic steroids it is imperative you live a healthy lifestyle that promotes the continuation of good health. If your blood pressure and cholesterol levels are healthy prior to supplementation, and you shouldn't be supplementing otherwise, continue to live in a way that promotes the continuation of such healthy levels; in-fact, give it more attention. This should not be all that hard to do; after all, you're supplementing for the purpose of performance enhancement, and an unhealthy lifestyle does not promote this end. You bet, this means avoiding excess or heavy alcohol consumption, but it also needs to be avoided due to the C17-aa nature of this steroid as discussed above. Heavy alcohol consumption is extremely hard on the liver, and you don't need the added stress; more so, alcohol itself is the most anti-performance thing you could ever put into your body. While you should avoid excess alcohol, and all alcohol if you want to do things right, you are also encouraged to avoid all over the counter (OTC) medications when possible. Many OTC meds carry extremely strong hepatotoxic natures, some even more so than many anabolic steroids, and their use must be limited to only when truly needed.
Dianabol is not an extremely androgenic steroid, its androgenicity has been structurally reduced, but androgenic side effects are still possible. Such side effects of Dianabol use include acne, accelerated hair loss in those predisposed to male pattern baldness and body hair growth. Most men should not have a problem with such effects, response will be the final dictator, but most will remain clear. Although the odds are in your favor, such effects are brought on by Methandrostenolone being metabolized by the 5-alpha reductase enzyme. This is the same enzyme responsible for the reduction of testosterone to dihydrotestosterone, but the overall conversion here will result in very low amounts of dihydromethandrostenolone. This tells us 5-alpha reductase inhibitors like Finasteride that are often used to combat androgenic side effects will have very little if any affect on Dianabol.
Despite its reduced androgenicity, Dianabol can promote virilization symptoms in women. Such symptoms include body hair growth, a deepening of the vocal chords and clitoral enlargement. It is possible for some women to use this steroid without virilization symptoms with extremely low doses, but the odds are not favorable. Most all women should choose anabolic steroids with less translating androgenic activity to meet their needs.