Head-to-head clinical analysis & difference comparison: details on mechanism of action, dosing, half-life, interactions, and maternal-fetal safety.
APALUTAMIDE vs ANDROID 25
Clinician-reviewed, head-to-head comparison of mechanism, dosing, pharmacokinetics, and safety profiles.
Last clinically reviewed: July 2026 · OpiCalc Medical Review Team
Apalutamide is a nonsteroidal antiandrogen that inhibits androgen receptor (AR) nuclear translocation, DNA binding, and transcription of AR target genes. It also decreases AR-mediated tumor cell proliferation and increases apoptosis.
Android 25 contains methyltestosterone, a synthetic androgen that binds to androgen receptors, promoting protein synthesis and anabolic effects. It also inhibits gonadotropin secretion from the pituitary, reducing endogenous testosterone production.
Metastatic castration-sensitive prostate cancer (m CSPC),Non-metastatic castration-resistant prostate cancer (nm CRPC)
Hypogonadism in males (primary and secondary),Delayed puberty in males,Metastatic breast cancer in women (as palliative therapy)
240 mg orally once daily with or without food.
Testosterone 25 mg subcutaneously or intramuscularly every 2 to 4 weeks. Alternatively, 125 mg intramuscularly every 10 days.
Terminal elimination half-life is approximately 3 days (72 hours) for apalutamide and 3–5 days for the active metabolite N-desmethyl-apalutamide. The long half-life supports once-daily dosing and requires approximately 2–3 weeks to reach steady state.
Terminal elimination half-life: 10–100 minutes (testosterone); clinical context: rapid clearance necessitates frequent dosing or use of esters for sustained effect
Primarily metabolized by CYP2C8 and CYP3A4 to active metabolite N-desmethylapalutamide. Also involves glucuronidation by UGTs.
Primarily hepatic via reduction and oxidation; metabolites include androsterone and etiocholanolone; excreted in urine.
Apalutamide and its active metabolite N-desmethyl-apalutamide are eliminated primarily via hepatic metabolism and subsequent fecal excretion. Approximately 65% of the dose is recovered in feces (as unchanged drug and metabolites) and 24% in urine (primarily as metabolites). Renal excretion of unchanged drug is negligible.
Renal: 90% (as glucuronide and sulfate conjugates, 5–10% unchanged); fecal/biliary: 10%
Apalutamide is highly protein bound (>96%), primarily to albumin and alpha-1-acid glycoprotein. No significant displacement interactions are expected with other highly bound drugs.
97–99% (sex hormone-binding globulin and albumin)
Apparent volume of distribution (Vd/F) is approximately 200 L (2.7 L/kg for a 70 kg adult), indicating extensive distribution into tissues including the prostate and other androgen-responsive organs.
0.3–0.6 L/kg; indicates distribution into lean muscle and sex organs
Oral bioavailability is not precisely determined due to lack of an intravenous formulation, but absorption is at least 90% based on mass balance studies. Food does not significantly affect absorption, so it can be taken with or without food.
Oral: <5% (methyltestosterone: ~20–25% due to 17α-alkylation); IM: 100%
No dose adjustment required for mild to moderate renal impairment (e GFR 30-89 m L/min). For severe renal impairment (e GFR 15-29 m L/min), use with caution; no specific dose recommendation. Not studied in end-stage renal disease (e GFR <15 m L/min) or on hemodialysis.
No dose adjustment required for GFR ≥30 m L/min. For GFR <30 m L/min, consider reducing dose or increasing interval; monitor for fluid retention and hypertension.
Mild hepatic impairment (Child-Pugh A): No dose adjustment. Moderate hepatic impairment (Child-Pugh B): Reduce dose to 120 mg once daily. Severe hepatic impairment (Child-Pugh C): Not recommended due to lack of data.
Contraindicated in Child-Pugh class B or C cirrhosis. For mild hepatic impairment (Child-Pugh A), start with lower dose (e.g., 12.5 mg every 2 weeks) and titrate based on response and liver function.
Safety and efficacy not established; no approved pediatric dosing.
Not recommended for use in pediatric patients (safety and efficacy not established). For male adolescents with hypogonadism, individualize: start at 12.5 mg every 2 weeks and adjust based on testosterone levels and growth.
No specific dose adjustment required; consider comorbidities and potential for increased adverse effects based on renal and hepatic function.
Start with lower initial dose (e.g., 12.5 mg every 2 weeks); monitor prostate-specific antigen (PSA) and hematocrit frequently. Avoid in patients with prostate cancer or untreated sleep apnea.
None.
WARNING: Androgens are contraindicated in pregnancy due to masculinization of female fetus. Hepatotoxicity, including peliosis hepatis and hepatic neoplasms, has been reported with prolonged use.
Seizures: Discontinue permanently if seizure occurs during treatment.,Fractures and Falls: Increased risk of bone fractures and falls; assess bone density and manage accordingly.,Cardiovascular Events: Increased risk of hypertension, cardiac ischemia, and heart failure; monitor cardiovascular status.,Hypothyroidism: Monitor thyroid function before and during treatment; replacement therapy may be needed.,Embryo-Fetal Toxicity: Can cause fetal harm; advise males with female partners of reproductive potential to use effective contraception.
Use with caution in patients with hepatic, renal, or cardiovascular disease; may cause gynecomastia, edema, hypercalcemia, and polycythemia; monitor liver function, lipid profile, and hematocrit periodically; may accelerate bone maturation in children; risk of prostate hypertrophy and urethral obstruction.
Pregnancy (can cause fetal harm),Women of reproductive potential (unless using effective contraception)
Known or suspected prostate cancer; male breast cancer; pregnancy; lactation; hypersensitivity to methyltestosterone; severe hepatic impairment.
Avoid grapefruit and grapefruit juice due to potential CYP3A4 interaction. No other specific dietary restrictions; can be taken with or without food.
Take with food containing fat (e.g., avocado, nuts, olive oil) to enhance absorption. Avoid grapefruit juice as it may increase testosterone levels via CYP3A4 inhibition. Limit alcohol due to potential liver effects.
Apalutamide is contraindicated in pregnancy. Based on its mechanism of androgen receptor inhibition, it may cause fetal harm, including feminization of male fetuses and developmental abnormalities. Adequate animal reproduction studies have not been conducted; however, in rats, fetal malformations were observed at exposures below human clinical exposures. Effective contraception is required for females of reproductive potential during treatment and for 3 months after the last dose.
Android 25 (methyltestosterone) is an androgen. First trimester: Virilization of female fetus, including clitoromegaly, labial fusion, urogenital sinus abnormalities if exposure occurs before 12 weeks gestation. Second and third trimesters: Continued risk of female pseudohermaphroditism, and potential for masculinization of female external genitalia. Androgens can cross the placenta and may also cause skeletal abnormalities and growth retardation. Pregnancy category X.
It is unknown whether apalutamide or its metabolites are excreted in human milk. Due to potential for serious adverse reactions in breastfed infants, breastfeeding is not recommended during treatment and for at least 3 months after the last dose. M/P ratio is not available.
Methyltestosterone is excreted into breast milk; M/P ratio not established. May cause virilization in female infants and premature sexual development in male infants. Androgens can suppress lactation. Use during breastfeeding is contraindicated.
No dosing adjustments have been established for pregnancy. Apalutamide is not indicated for use in pregnant women. Physiological changes in pregnancy may alter pharmacokinetics, but no data are available to guide dose modifications.
Android 25 is contraindicated in pregnancy, so no dosing adjustments are applicable. If used inadvertently, discontinue immediately. No pharmacokinetic data to guide dose changes; avoid use entirely.
Apalutamide is an androgen receptor inhibitor used for non-metastatic castration-resistant prostate cancer (nm CRPC). It is a strong CYP3A4 inducer and moderate CYP2C8 inhibitor, requiring careful management of drug interactions. Monitor thyroid function and blood pressure. Concomitant use with warfarin or other anticoagulants may necessitate increased monitoring due to reduced efficacy. Apalutamide can cause seizures; avoid in patients with history of seizure disorders. Baseline and periodic serum lipid profiles and glucose levels are recommended. Dose reduction in severe hepatic impairment (Child-Pugh C) is suggested.
Android 25 (testosterone undecanoate) requires absorption via lymphatic system; administer with fat-containing meal. Monitor serum testosterone levels 3-5 hours post-dose. Avoid in patients with breast cancer or known or suspected prostate cancer. Risk of polycythemia; check hematocrit before and during therapy.
Take apalutamide with or without food, at the same time each day.,Do not crush, chew, or split tablets; swallow whole.,Avoid grapefruit and grapefruit juice during treatment.,Report signs of seizure, high blood pressure, or thyroid abnormalities to healthcare provider immediately.,Use effective contraception during treatment and for 3 months after last dose; apalutamide may reduce hormonal contraceptive effectiveness.,Inform all healthcare providers of apalutamide use due to potential drug interactions.,May cause fatigue, dizziness, or hot flashes; avoid driving if affected.,Store at room temperature away from moisture and heat.
Take capsules with meals, especially those containing fat, to improve absorption.,Do not chew or crush capsules; swallow whole.,Report signs of deep vein thrombosis (leg swelling, pain) or pulmonary embolism (sudden dyspnea, chest pain).,Women of reproductive potential should avoid pregnancy; use effective contraception.,Keep out of reach of children; testosterone can cause serious harm if accidentally ingested.,Regular blood tests (testosterone, hematocrit, PSA, lipid profile) are required.
No interactions on record
No interactions on record
Explore head-to-head clinical comparisons of other medications in the same therapeutic classes.
Common clinical questions about APALUTAMIDE vs ANDROID 25, answered by our medical review team.
APALUTAMIDE is a Androgen Receptor Inhibitor that works by Apalutamide is a nonsteroidal antiandrogen that inhibits androgen receptor (AR) nuclear translocation, DNA binding, and transcription of AR target genes. It also decreases AR-mediated tumor cell proliferation and increases apoptosis.. ANDROID 25 is a Androgen that works by Android 25 contains methyltestosterone, a synthetic androgen that binds to androgen receptors, promoting protein synthesis and anabolic effects. It also inhibits gonadotropin secretion from the pituitary, reducing endogenous testosterone production.. They differ in pharmacokinetic profiles, FDA-approved indications, and side effect profiles.
Potency comparisons between APALUTAMIDE and ANDROID 25 depend on the specific clinical indication. These are agents from distinct pharmacological classes and are not directly interchangeable by dose. A physician or clinical pharmacist should guide any therapeutic switching decisions.
The standard adult dose of APALUTAMIDE is: 240 mg orally once daily with or without food.. The standard adult dose of ANDROID 25 is: Testosterone 25 mg subcutaneously or intramuscularly every 2 to 4 weeks. Alternatively, 125 mg intramuscularly every 10 days.. Dosing should always be individualized based on indication, renal and hepatic function, age, and other patient factors.
No direct drug-drug interaction has been formally documented between APALUTAMIDE and ANDROID 25 in current clinical databases. However, individual patient risk factors including other medications, organ function, and comorbidities should always be evaluated by a qualified healthcare provider.
The maternal-fetal safety profiles differ. APALUTAMIDE is classified as Category C. Apalutamide is contraindicated in pregnancy. Based on its mechanism of androgen receptor inhibition, it may cause fetal harm, including feminization of male fetuses and development. ANDROID 25 is classified as Category C. Android 25 (methyltestosterone) is an androgen. First trimester: Virilization of female fetus, including clitoromegaly, labial fusion, urogenital sinus abnormalities if exposure oc. Always consult a maternal-fetal medicine specialist before taking either drug during pregnancy or lactation.