How do these ten steroid topics differ?
These names refer to different substances, formulations and reference contexts. Some have a named human-medicine label, while other references concern veterinary products or substance terminology. The comparison below explains those distinctions and specific safety findings, without ranking muscle gain or presenting a safe-use list. AndroGel 1.62% prescribing information, DEA anabolic-steroid information, US veterinary rule for boldenone undecylenate, NLM methandrostenolone entry.
Testosterone: a hormone, replacement indications and blood pressure
Testosterone is an androgen hormone. The US AndroGel 1.62% label indicates replacement therapy for males with deficiency or absence of endogenous testosterone associated with primary or hypogonadotropic hypogonadism. That is a specified replacement indication, not a general performance use. AndroGel 1.62% prescribing information.
FDA reported that completed ambulatory blood-pressure studies confirmed a blood-pressure increase across testosterone products and required related warning information. The testosterone guide covers the named clinical context and safety discussion. FDA testosterone blood-pressure warning update.
Trenbolone: US veterinary use, not a human performance indication
DEA identifies trenbolone as an anabolic steroid and states in its US drug information that it is used only in veterinary medicine. FDA lists trenbolone acetate among synthetic hormones used in steroid implants for food-producing animals. A veterinary product record is not a human bodybuilding indication. See the trenbolone guide. DEA anabolic-steroid information, FDA veterinary steroid-implant information.
Nandrolone: a testosterone analogue and historical liver warnings
NCI describes nandrolone as a synthetic anabolic steroid analogue of testosterone. The archived 2007 US nandrolone decanoate injection label warns about peliosis hepatis and liver tumors in androgenic anabolic steroid therapy. This is historical label safety information, not a measured event rate for a supplier vial. The nandrolone guide keeps the exact reference context. NCI nandrolone definition, Nandrolone decanoate prescribing information (2007).
Anavar and oxandrolone: a named withdrawal determination
NLM lists Anavar as an entry term for oxandrolone, which NCI describes as a synthetic anabolic steroid hormone analogue of testosterone. In September 2023, FDA determined that Oxandrin oxandrolone tablets, 2.5 mg and 10 mg, had been withdrawn from sale for reasons of safety or effectiveness. The notice names peliosis hepatis, liver cell tumors and adverse blood-lipid changes among its safety concerns. Read the Anavar/oxandrolone guide. NLM oxandrolone entry terms, NCI oxandrolone definition, FDA oxandrolone withdrawal determination (2023).
Dianabol: methandrostenolone and methandienone names
NLM's Methandrostenolone entry lists both Dianabol and Methandienone among its entry terms. NCI also connects Methandienone and Metandienone with Methandrostenolone. These name relationships help match references; they do not establish the formulation or effects of a supplier's tablets. The Dianabol guide explains the terminology. NLM methandrostenolone entry terms, NCI methandrostenolone entry.
Masteron and drostanolone propionate
The cited 2020 chemical-structure study identifies drostanolone propionate by the additional name masteron. NCI separately describes dromostanolone as a synthetic anabolic steroid related to dihydrotestosterone, lists Drostanolone as its synonym, and identifies virilizing effects as a limitation on clinical usefulness. The propionate-specific Masteron name should not be assigned to every ester or supplier formulation. See Masteron and drostanolone. Drostanolone propionate chemical-structure study, NCI dromostanolone entry.
Winstrol and stanozolol: a specific DHT derivative
NCI lists Winstrol as a synonym of stanozolol. Its definition describes stanozolol as an orally active synthetic anabolic steroid and a 17alpha-alkylated derivative of dihydrotestosterone. That definition does not provide a comparative safety score or a clinical performance result. The Winstrol/stanozolol guide covers the compound identity. NCI stanozolol synonyms, NCI stanozolol definition.
Primobolan: the acetate alias and separate enanthate entry
NLM's methenolone acetate supplementary concept lists Primobolan as an entry term. NLM also records Metenolone as an entry term for Methenolone, and NCI maintains separate methenolone acetate and enanthate entities. The acetate-specific alias is not a basis for calling every methenolone ester or supplier item equivalent. See the Primobolan/methenolone guide. NLM methenolone acetate entry terms, NLM methenolone entry, NCI methenolone acetate entry, NCI methenolone enanthate entry.
Boldenone: a US horse-drug rule
NCI classifies boldenone under Anabolic Steroid. US 21 CFR 522.204 describes boldenone undecylenate solution under conditions of use in horses and restricts the veterinary drug to use by, or on the order of, a licensed veterinarian. That regulation is not an approval for human performance use. The boldenone guide explains the source context. NCI boldenone entry, US veterinary rule for boldenone undecylenate.
Turinabol: a substance registry is not product approval
FDA's substance registry lists Oral Turinabol and Dehydrochloromethyltestosterone among names for chlorodehydromethyltestosterone; NCI places the compound under Anabolic Steroid. The FDA record explicitly states that having a UNII does not imply regulatory review or approval. A registry name therefore cannot supply a product-approval claim. Read Turinabol. FDA Turinabol substance record, NCI chlorodehydromethyltestosterone entry.
Shared steroid risks are not a compound-by-compound ranking
DEA describes anabolic steroids as activating androgen receptors, mediating anabolic and androgenic effects, and lists testicular shrinkage and sterility among potential adverse effects of steroid use in men. Those are class-level risk statements, not measured incidence figures for each of the ten substances. A chemical classification, reference label or veterinary rule does not establish a safe human regimen. DEA anabolic-steroid information.
