this happened 10 years ago lang, yun isa ko relative bigla na lang nagkaroon ng yellowish hue yun skin and teeth, dinala sya sa doctor kasi nga akala namin lahat hepa, pagtapos ng lahat ng medical test, lumabas nag continous megadose sya ng multi vitamins resulting in an increase in yellow pigmentation... di naman permanent yun condition, she returned to her normal color a week or two after she reverted back to the doctor recommended daily dose ng vitamins...anyway, basahin nyo muna literature sa mga gamot or any items before ingesting it, specially tungkol sa side effects and contra indications