Is Spironolactone successful at helping to regrow hair from PCOS hair loss (if taken long term at high enough dose)?

Spironolactone
can help regrow hair. You may need a higher dose. Other options may
also help: follicular unit hair transplantation is one option. Please
see an expert. Best, Dr. Emer

Chanpen88,How long have you been on this regimen? Results vary but about 1/3 have a good improvement. Looks like your physician has on a therapeutic dose. Continue doing the necessary follow up for blood testing, and care with your doctor.There are other very effective treatments like PRP/Acell , and Laser therapy.All the best,Bernardino A. Arocha, MD

About 30 % of women experience with PCOS associated androgenetic alopecia will experience an improvement in hair density using spironolactone

In a word; Yes.  If you can go higher on the dose without negative effect, you might try that with your physician's supervision as well.  Spironolactone is dose dependent and clinically I have seen the best results in the 100mg BID (so 200mg total per day) dose range.  Also try adding LLLT/PBMT, HelpHair shakes, and ketoconazole or zinc shampoos.  I have no financial arrangement with these companies, but when it comes to medications for hair, everything works together, so do MORE instead of less!Good luck!

The results in using this medication is variable for PCOS. If you are having thinning and hair loss associated with PCOS, the best cosmetic solution is scalp micropigmentation (see below)