Furazabol is a mild 17 alpha alkylated steroid which is administered orally. Its synthetic derivation is attributed to DHT or dihydrotestosterone. There is not much androgenic activity associated with this steroid. For this reason you will find that during the cutting phase, Furazabol produces amazing results as it increases the muscle density and gives the muscles a hard ripped look. It does not cause fat deposition and is good for lean mass build up. The dense hard look of the muscles is also due to the fact that Furazabol does not cause water retention. However the magic of Furazabol ends here as the users hardly experience any major muscle mass gain or increase in strength. This is due to the lack of adequate androgenic activity.
Some bodybuilders and athletes use trenbolone esters for their muscle-building and otherwise performance-enhancing effects.  Such use is illegal in the United States and many other countries. The DEA classifies trenbolone and its esters as Schedule III controlled substances under the Controlled Substances Act .  Trenbolone is classified as a Schedule 4 drug in Canada  and a class C drug with no penalty for personal use or possession in the United Kingdom .  Use or possession of steroids without a prescription is a crime in Australia . 
Furazabol does not aromatize and also has very minimal bloat. It has a moderately potent androgenic activity, giving it a fairly low risk for gyno or negative effects on the libido. However its androgenic effects may pose a problem for users prone to androgenic related hair loss.
Once the Furazabol THP reaches the stomach, most of the THP-ether is removed by the stomach acid to form the active Furazabol (the non-methylated version). Therefore, topical delivery of this compound is probably not worthwhile. Furazabol has a similar structure to the illegal anabolic steroid stanozolol (Winstrol). The only difference is the pyrazole ring has been replaced with a furazan ring. There is rumor that this compound has benefits for cholesterol levels. While some evidence proves that it can lower total cholesterol, it should be noted that the decrease in cholesterol is mostly due to a decrease in HDL. Therefore, your LDL/HDL ratio would become worse.