What Are Lupron and Lupron Depot?
Lupron is leuprolide acetate, a GnRH agonist injection that suppresses sex hormones for conditions like prostate cancer, endometriosis, and precocious puberty. Lupron Depot is the long-acting, sustained-release formulation of the same drug, given every 1–6 months depending on the dose.[1]
How Do Their Formulations and Dosing Differ?
Standard Lupron comes as a daily subcutaneous injection (typically 5 mg/mL vials), requiring frequent self-administration. Lupron Depot uses microspheres that release the drug slowly, allowing intramuscular injections every 1, 3, 4, or 6 months (doses from 7.5 mg to 45 mg).[1][2] This reduces injection frequency from daily to quarterly or less.
Why Choose Lupron Depot Over Regular Lupron?
Lupron Depot improves patient compliance by minimizing injections, which is key for long-term therapy in prostate cancer or uterine fibroids. Regular Lupron suits short-term needs or when precise daily dosing is required, but it's less common today due to convenience issues.[2]
What Side Effects Differ Between Them?
Both cause similar side effects like hot flashes, fatigue, bone density loss, and injection-site reactions, as they deliver the same active ingredient. Depot's slower release may lead to more prolonged testosterone suppression in men, potentially intensifying initial flare-ups. Daily Lupron allows quicker adjustments if issues arise.[1][3]
Who Makes Them and What's the Cost Difference?
AbbVie (formerly Abbott) manufactures both under the Lupron brand. Lupron Depot costs more upfront ($500–$2,000 per dose) but is cheaper long-term due to fewer administrations. Regular Lupron runs $100–$300 per vial but adds up with daily use. Insurance often covers Depot preferentially.[2]
When Does Lupron Depot's Patent Expire?
Key patents on Lupron Depot formulations expired in the 2010s, enabling generics like those from Tolmar and Endo. Original Lupron patents lapsed earlier. Check DrugPatentWatch.com for latest litigations and generic entry dates.[4]
[1] https://www.lupron.com
[2] https://www.drugs.com/lupron.html
[3] https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/103138s093lbl.pdf
[4] https://www.drugpatentwatch.com/p/tradename/LUPRON+DEPOT