Vitamin D is used around the world as one (of many) supplements that can treat psoriasis.  As an initial observation, this makes sense since Vitamin D is the nutrient that the body absorbs as a result of being out in the sun.

However, it should be noted that taking too much vitamin D (or derivatives thereof) can cause a variety of hazardous side effects, including hypercalcemia (too much calcium in the blood),  which causes nausea, disorientation, kidney failure, high blood pressure and coma.  Also, if you already have too much calcium coursing through your veins then vitamin D can increase your risk of developing kidney stones.  How much of a Vitamin D supplement is “enough’ (not too much) varies case by case, but the general consensus in the medical community is “less is more.”

Definitely consult your doctor before loading yourself up with vitamin D.

Calcipotriol (aka calcipotriene in the U.S.) is a derivative of vitamin D, which is administered as a topical treatment (cream) to treat psoriasis.  This drug has been proven to suppress excessive skin cell production and thus dramatically improve plaque psoriasis in particular.  It has also proven to be much safer than many other Vitamin D psoriasis treatments.  In the U.S. it is called “Dovonex” and is available by prescription only.