DRUG PROFILE Calcipotriol/betamethasone dipropionate: Daivobet®/Dovobet® Lyn C Guenther Psoriasis is a common skin condition that causes significant morbidity. Treatments can be 835 Richmond St., complex and time consuming. Calcipotriol plus betamethasone dipropionate ointment London, Ontario, (Daivobet® or Dovobet®) is a stable, convenient, once-daily topical treatment for psoriasis. N6A 3H7, Canada Tel.: +1 519 435 1738 Compared with its individual ingredients or tacalcitol, it has a faster speed of onset and Fax: +1 519 435 1740 greater efficacy. Consistent Psoriasis Area Severity Index reductions of approximately 40%
[email protected] after 1 week and 70% after 4 weeks were seen in multicenter studies involving more than 6000 patients. After 4 weeks of once-daily therapy, approximately 50% of patients are clear or almost clear. This product is associated with a similar safety profile to betamethasone dipropionate ointment, 50% fewer cutaneous adverse events than calcipotriol ointment and 75% fewer than tacalcitol ointment. Psoriasis affects 0.3 to 2.6% of the population and receptor, acts as a heterodimer with the retinoid X has a significant impact on the patient’s quality of receptor (RXR) [9]. Keratinocytes and lympho- life [1–4]. A 1998 US survey of 17,488 National cytes have vitamin D receptors. In psoriasis, Psoriasis Foundation patient members showed that vitamin D analogues normalize differentiation psoriasis had a significant impact on psychosocial and proliferation, induce apoptosis in inflamma- activities (e.g., interacting in the workplace and tory cells, induce a T-helper (Th)1 to 2 switch with family/spouse, making and keeping friends, and are antiangiogenic [10–12].