Sorifix Solo OintmentSorifix Solo Ointment 15 gm aids psoriasis, and it contains the active substance calcipotriol. It is a synthetic form of Vitamin D. It inhibits the excess production of skin cells, leading to the formation of scales and patches of the skin in psoriasis. Sorifix Solo Ointment 15 gm helps treat plaque psoriasis, the most common type of psoriasis that develops thick red patches on the skin, with a silver or white scaly layer.