Comparative Pharmacology
Head-to-head clinical analysis: TESTOSTERONE UNDECANOATE versus TLANDO.
Peer-Reviewed Evidence
Head-to-head clinical analysis: TESTOSTERONE UNDECANOATE versus TLANDO.
TESTOSTERONE UNDECANOATE vs TLANDO
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Testosterone undecanoate is a prodrug of testosterone, which binds to androgen receptors (ARs) in target tissues, leading to activation of androgen-responsive genes that promote male sexual development, maintenance of secondary sexual characteristics, and anabolic effects. It also exerts negative feedback on the hypothalamic-pituitary-gonadal axis, suppressing gonadotropin secretion.
TLANDO (testosterone undecanoate) is an androgen that binds to and activates androgen receptors, leading to increased protein synthesis, muscle mass, bone density, and secondary sexual characteristics. Testosterone is converted to dihydrotestosterone (DHT) via 5α-reductase in target tissues, exerting both androgenic and anabolic effects.
1000 mg intramuscularly every 10-14 weeks, followed by a second dose at 6 weeks; maintenance 1000 mg every 10-14 weeks.
TLANDO (testosterone undecanoate) is administered orally. The recommended adult dose is 225 mg twice daily (approximately every 12 hours) with a meal containing fat. Swallow capsules whole; do not chew or crush.
None Documented
None Documented
Terminal elimination half-life: 20.7 days (range 16.5–25.7 days) after intramuscular injection. This prolonged half-life is due to slow release from the oily depot in muscle. With oral administration, half-life is approximately 7–13 hours.
The terminal elimination half-life of testosterone is 10-100 minutes; however, for TLANDO (testosterone undecanoate) after oral administration, the apparent half-life is approximately 7-10 hours due to the slow release from chylomicrons and prolonged absorption.
Renal (5-10% as glucuronide and sulfate conjugates, <1% as unchanged testosterone), Fecal (90% as metabolites via bile). No significant biliary excretion of active drug.
Approximately 90% of a dose is excreted in urine as glucuronide and sulfate conjugates of testosterone and its metabolites; about 6% is excreted in feces via bile. Unchanged testosterone accounts for less than 1% of urinary excretion.
Category D/X
Category C
Androgen
Androgen/hormone replacement