Alternative to Minoxidil. Would low level therapy help?

I am 40 year old female and have been treated for hair loss with combination of PRP therapy and Minoxidil over the last 6 months with great results. I have finished my PRP sessions and want to replace Minoxidil with another alternative. I want to have children in the very near future so I want to find a safe and effective treatment that will maintain these results. Would low level therapy help? All suggestions welcome.