I had Lupron Depo once a month for 6 months to give me "menopause" after I had laser surgery for my endometriosis. My doctor felt that would help any microscopic cells die off and keep the endometriosis from recurring (which didn't work).
The injections are very painful, so even without the side effects, I would be hesitant for a child to have to get them regularly unless absolutely necessary.
My doctor has told me that the Lupron is responsible for basically killing my metabolism. I gained 40 pounds while on it and can't lose it no matter what I do. My doctor says that unless I eat only 500-800 calories a day, I will not be able to lose weight. Obviously, that's not sustainable or realistic.
I have bone density loss and was dx'ed with osteopenia when I was in my early 30s.
Before Lupron I never had ovarian cysts, but have had them several times a year since then (this one, I'm not positive there's any correlation).
My long term side effects aren't too bad, but once my doctor told me my weight would never come off, I looked further into Lupron side effects and it gave me some some pretty serious concerns.
Since we were taking the wait and see approach with DD's PP, and reducing the soy seemed to help, I didn't really research very much into pediatric use of Lupron and possible long-term effects. Are you a member of
MAGIC? I know they deal with PP and they may have a PP forum where you could get in touch with others who chose (or didn't) to use Lupron.