Vitamin D Supplementation as a Neoadjuvant for Photodynamic Therapy of Actinic Keratoses

"PDT is a technique that combines a photosensitizing drug and an intense light source to kill tumor cells~Noninvasive fluorescence dosimetry may be performed on up to 6 lesions. Levulan Kerastick will be applied to each lesion and left to incubate for 30 minutes. Blue light (Blu-U device, 20 J/cm2, 33 minutes) will be administered."

"D3 pills (10,000 IU each) to be taken daily at home, beginning at either day -5 or day -14, as per their assignment~Participants will receive a 5-day or 14-day supplementation of Vitamin D10,000 IU depending on their baseline Vitamin D 25 Hydroxy result"