Dihydrotestosterone (DHT) (referred to as androstanolone or stanolone when used medically) can also be used in place of testosterone as an androgen. The availability of DHT is limited; it is not available in the United States or Canada, for instance, but it is available in certain European countries, including the United Kingdom , France , Spain , Belgium , Italy , and Luxembourg .  DHT is available in formulations including topical gel, buccal or sublingual tablets, and as esters in oil for intramuscular injection.  Relative to testosterone, and similarly to many synthetic AAS, DHT has the potential advantages of not being locally potentiated in so-called androgenic tissues that express 5α-reductase (as DHT is already 5α-reduced) and of not being aromatized into an estrogen (it is not a substrate for aromatase).
(B) (1) Every licensed health professional authorized to prescribe drugs shall keep a record of all controlled substances received and a record of all controlled substances administered, dispensed, or used other than by prescription. Every other person, except a pharmacist or a manufacturer, wholesaler, or other person licensed under section of the Revised Code, who is authorized to purchase and use controlled substances shall keep a record of all controlled substances purchased and used other than by prescription. The records shall be kept in accordance with division (C)(1) of this section.