Cycle-length evidence
Leuprolide cycle length: what human studies ran
FDA-approvedAHuman trial evidence
Short answer: Leuprolide has no "cycle". As an approved drug it is used as its label and a prescriber direct.
Treatment and follow-up in human studies
No human study durations are recorded.
What has not been tested
- On-and-off schedules or breaks between courses.
- Repeated courses and long-term exposure beyond the periods listed.
- Leuprolide combined with other compounds, unless a study above says so.
Frequently asked questions
Is there an established Leuprolide cycle length?
No cycle is defined. Leuprolide is an approved drug whose label describes treatment under a prescriber's care; the label, not a cycle, governs duration.
What is the longest human study of Leuprolide?
None is recorded.
Do study durations tell me how long to use something?
No. A study duration is how long investigators administered a compound to selected participants under monitoring. It is not a recommended course, and a break between courses has not been tested for any compound on this site that is not approved.
References
- LUPRON DEPOT 7.5 mg, 22.5 mg, 30 mg, 45 mg (leuprolide acetate for depot suspension) prescribing information, advanced prostate cancer (effective 03/2026) FDA label (DailyMed). 2026
- LUPRON DEPOT 3.75 mg (leuprolide acetate for depot suspension) prescribing information, endometriosis and fibroids (effective 09/2025) FDA label (DailyMed). 2025
- LUPRON DEPOT-PED (leuprolide acetate for depot suspension) prescribing information, central precocious puberty (effective 11/2025) FDA label (DailyMed). 2025
- ELIGARD (leuprolide acetate) for injectable suspension prescribing information (effective 04/2026) FDA label (DailyMed). 2026
- Drugs@FDA (openFDA) application records for leuprolide U.S. FDA. 2026
- Leuprolide versus diethylstilbestrol for metastatic prostate cancer N Engl J Med. 1984
- Oral Relugolix for Androgen-Deprivation Therapy in Advanced Prostate Cancer (HERO) N Engl J Med. 2020
- World Anti-Doping Agency Prohibited List 2026 (online version) WADA. 2026
- PubChem compound record for leuprolide PubChem. 2026