This belongs to the group of medicines known as vitamin D analogues.
It is similar to vitamin D, a vitamin essential for healthy skin.

Rocaltrol is used to treat plaque psoriasis. Plaque psoriasis is a skin disorder caused by cells in the outer layer of the skin multiplying too quickly. As new skin cells are produced, old ones are shed. If this process is taking place too quickly, old skin cells build up on the skin surface causing red, scaly patches. Rocaltrol helps to control psoriasis by slowing down the production of new skin cells.

Rocaltrol is available in cream, ointment and scalp solution form.

It is also sometimes known as: Dovonex. You may notice the use of any of these names on the packaging of your medicine.