Comparative Pharmacology
Head-to-head clinical analysis: DELATESTRYL versus TESTIM.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DELATESTRYL versus TESTIM.
DELATESTRYL vs TESTIM
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Testosterone ester; binds to androgen receptors, activating gene transcription and promoting protein synthesis, muscle growth, and secondary sexual characteristics.
Testosterone replacement therapy; binds to and activates androgen receptors, modulating gene expression leading to male sexual development and maintenance of secondary sexual characteristics.
50 to 200 mg intramuscularly every 2 to 4 weeks.
Apply 5 g (1 tube) of 1% gel to clean, dry, intact skin of the shoulders, upper arms, or abdomen once daily, preferably in the morning. Dosage may be adjusted to 10 g (2 tubes) depending on clinical response. Apply immediately after opening and avoid bathing or swimming for at least 30 minutes.
None Documented
None Documented
8 days (terminal); requires 5-6 weeks to reach steady state with weekly dosing
Terminal elimination half-life of testosterone from serum is approximately 10-100 minutes after intravenous administration, but after transdermal application of Testim, the apparent half-life is longer (around 1-2 hours) due to continued absorption from the skin depot. The half-life of active metabolites (e.g., dihydrotestosterone) is about 2-3 hours.
Urinary (90% as glucuronide and sulfate conjugates, 5% as unchanged drug); fecal (5%)
Testosterone is primarily excreted in urine as glucuronide and sulfate conjugates (approximately 90%), with about 6% excreted in feces via bile. Less than 1% is excreted unchanged.
Category C
Category C
Androgen
Androgen