Thank you for your question. Vitamin D should not pose any adverse effects for your upcoming surgery but I would still recommend that you discuss this with your board certified plastic surgeon. I always think that it is important that patients discuss their medical history and any current medications with their surgeons directly since each surgeon will have his/her own pre-operative protocols and recommendations. I advise my patients to avoid the use of Vitamin A, E, fish oil, omega's, multivitamins and blood thinners for at least two weeks before their surgery. I hope that this answer helps and I wish you all of the best.