Consultants won’t (or rather shouldn’t!) give GnRH analogs without an endo diagnosis (or one of the other conditions it treats obviously!). Now I know that menopause / reduction of oestrogen can in some cases shrink flibroids but I don’t think the drugs are licensed for this use (I could be wrong). That doesn’t mean you won’t find a doctor willing to prescribe it off label, but personally I wouldn’t. This might be a long story, so feel free to skip ahead if you’re not interested!
I was on zoladex from 2007-2009 for endometriosis - It was the first time in over 10 years that I had no constant pelvic pain and no heavy periods to deal with (even on the pill I had a lot of bleeding - no one told me I could take pills back to back until I was 23 and I saw probably four different gynaes in that time!), so when they offered me HRT alongside it, I said no thank you!
I stayed on it for two years because it was working well for me - at the end of that I saw an endo specialist who looked absolutely horrified I was still on it and recommended I stop right away. I had been discharged because the drug was working and my GP wasn’t given any info on when to discontinue so just kept going - it’s only licensed for six months use in endo sufferers.
Unfortunately I never saw that Gynae again, because I moved across the country shortly afterwards when I physically had to stop working full time. I’d been diagnosed with ME while on the drug, didn’t think it was related. When I came off the drug I had all the same side effects still, but also pain and heavy bleeding. I was mostly house bound or bed bound due to pain or fatigue.
I had some pretty horrid side effects - the usual menopausal stuff (hot flushes etc, which are worse than they sound!) but also lots of my hair fell out, I lost almost 4 stone, I lost breast tissue, I had zero libido to the point where even being kissed in a sexual way made me feel sick. And then of course the fatigue which was apparently ME and a coincidence.
I went straight back on the pill and waited for the side effects to improve - they didnt. I tried other pills, no change, I tried the mirena coil which was a complete disaster which took me a year to resolve. Went back on the pill.
Eventually five and a half years after I stopped (five years ago now), I came off the pill. After six months of unregulated cycles, my sex drive came back - I thought great, problem solved, all these other things should improve soon. Nope.
I managed to keep hold of my sex drive and gained back the weight I’d lost, but other things stayed the same. After about 18 months I got pregnant and that’s when everything went awry again - by the end of my pregnancy I had massive bald patches, for example, and my libido buggered off again.
I couldn’t produce enough breastmilk despite power pumping and feeding - is it related? I don’t know. About six months postnatally I was diagnosed with fibromyalgia because I am in pain in all over. I have peripheral neuropathy which means constant burning pain 24/7 in all of my limbs, numbness in my back, etc etc. When I stopped breastfeeding, my cycle returned quickly and after a few months my libido returned and my fatigue improved slightly.
I gave it a few months and went back on the pill because my periods were so bad. Within six weeks all of the old hormonal issues were back worse than ever. I gave it three months and things were getting worse so I came off the pill (incidentally also microgynon 30) and hoped things would settle again. That was almost 18 months ago and it’s only now I’m seeing an improvement.
Sorry, this is all very longwinded - what I’m trying to say is that a) gnrh analogs really shouldn’t be used off label because the longterm effects can be catastrophic and b) no one really knows what the longterm effects are because no one is researching it, doctors aren’t reporting things as side effects because they don’t think it’s related. Unfortunately I’ve spoken to a lot of women with eerily similar stories.