what supplements can cause acne
Although more research is required, if you have recently added a B12 supplement, or a multivitamin containing B12, this could be the culprit of your breakout. Multivitamins: Most multivitamins contain iodine and biotin (B7), which when consumed on a regular basis, has been known to cause acne.
Yet, my skin problems really did seem to develop around the time I started taking these vitamins. I switched on my computer and began to Google around. Sure enough, I found numerous studies confirming that vitamin supplements, particularly B12 and B6 can induce and/or worsen acne in some people.