I used Mintop It worked for me well
As for substances, no. However, sustained anticipation for a sexual partner in preparation for intercourse has shown to increase the rate (but not area) of beard growth.
Minoxidil topical solution is available in India. CIPLA makes it in the name Tugain and Dr. Reddy's lab makes it under a brand called Mintop. Both these generic versions are available in chemist shops without a prescription as they are OTC formulations.