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Cycle-length evidence

Leuprolide cycle length: what human studies ran

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

  1. 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
  2. LUPRON DEPOT 3.75 mg (leuprolide acetate for depot suspension) prescribing information, endometriosis and fibroids (effective 09/2025) FDA label (DailyMed). 2025
  3. LUPRON DEPOT-PED (leuprolide acetate for depot suspension) prescribing information, central precocious puberty (effective 11/2025) FDA label (DailyMed). 2025
  4. ELIGARD (leuprolide acetate) for injectable suspension prescribing information (effective 04/2026) FDA label (DailyMed). 2026
  5. Drugs@FDA (openFDA) application records for leuprolide U.S. FDA. 2026
  6. Leuprolide versus diethylstilbestrol for metastatic prostate cancer N Engl J Med. 1984
  7. Oral Relugolix for Androgen-Deprivation Therapy in Advanced Prostate Cancer (HERO) N Engl J Med. 2020
  8. World Anti-Doping Agency Prohibited List 2026 (online version) WADA. 2026
  9. PubChem compound record for leuprolide PubChem. 2026