Any research you have seen regarding the most effective causes in this subspace? Thanks!
Founders Pledge has recommended Bandhan's Targeting the Hardcore Poor programme.
As part of a shallower investigation into early-stage funding opportunities, they also recommended Suvita
(Disclaimer: I worked at Founders Pledge when these recommendations were made, and was responsible for the Suvita recommendation. I don't think either of these are as highly-vetted or as cost-effective in expectation as GiveWell's recommendations, though among randomista-style giving opportunities in India I think they're a good bet!)
I also think air quality is a really promising bet in this area. Open Philanthropy has identified some promising opportunities, and made some grants, described here.
Hi Radon, you can check Fortify Health; https://www.fortifyhealth.global