Lichen planus pigmentosus. Please guide?

Im diagnosed with LPP after biopsy.I started getting black pigmentation on face underarms n neck slowly. I didn't give imp to it initially. Then it started spreading n consulted doc. It's been two years I've got it. I started medications 6 months ago. I'm using tacrolimus ointment since Sept 2016 n I also took NBUVB for 3 months till 800mg. I use sunscreen lotion twice a day. But after phototherapy I felt my skin became more dry and dark so I quit it since I felt really depressed with my dark face n neck. Since I became more dark n dry skin I consulted another doc n he has suggested depiwhite and pynomax tx cream alternate nights. He also give xamic tablet for one month. When I researched about this tablet it says it's for stoppage of extra menstrual bleeding. My periods is regular. It stays for 3-4 days and I always get it 3-5 days early. So I'm worried if I should consume this tablet??? Can someone please guide???