Started working out daily w/ 30 mins of zumba. feel good, less stressed but quite sore esp in thighs. is it normal? is it ok to continue the workoits?

OK, however...: Congratulations! This is not unusual as you are using muscles more and in new ways. But because of the soreness you may benefit by backing off a bit, perhaps doing this every other day until the pain lessens. It's possible whey protein powder may help but look for one from grass-fed cows processed with low heat such as Whey Cool. Homeopathic Arnica, both sublingual and topically, may also help.

OK: You may need to take it easy with some of your sore muscles. No protein or vitamin or any other supplement will make the slightest difference. Forget the zinc. No homeopathic product is of any value. Massage may help. Consider NSAID such as naproxen [Aleve].