helllo,
I am lactose intolerant and for a month i have been taking an ayurvedic medicine "Kutajarishta" twice a day after heavy meal, remember to take this only after heavy meal and not in empty stomach. It helped me a lot and feel much better than what i was earlier.
Please note, i am not a qualified ayurvedic professional but i have been suggested this medicine and been taking this for a while and see positive results.
Thanks,
Sid