About $weeks ago I tried an over the counter laxative called Magnesium Citrate,While drinking the laxative i felt my lips tingling or burning. 24-48 hrs later It felt as though I had an allergic reaction. It was as if something felt as if it were on my lips. My lips were swollen and bumpy. a week later the rash was gone but my lips had become very dark. As the days go by I notice a little peeling and excessive dryness on my lips. Should I seek medical attention or will my lips lighten up on it's own???