Calcineurin inhibitors such as tacrolimus and pimecrolimus are used as second-line therapies for atopic dermatitis, particularly effective for short-term and intermittent long-term treatment in patients who are either unresponsive or intolerant to conventional therapies.
A boxed warning indicates that the long-term safety of these agents has not been established, with rare cases of malignancy reported.[1-6]
Tacrolimus ointment is available in 0.03% and 0.1% formulations, approved for use in adults and children aged 2 years and older for moderate to severe atopic dermatitis. It should be applied topically to the affected areas twice daily until symptoms resolve, with reassessment if no improvement occurs within 6 weeks.[4][6]
Pimecrolimus cream 1% is indicated for mild to moderate atopic dermatitis in adults and children 2 years and older. It is applied topically twice daily to the affected skin areas until symptoms resolve, with proactive intermittent application 2 to 3 times weekly to recurrent sites also shown to be effective.[2-3]
Common side effects include a burning sensation at the application site, which may decrease with continued use or by mixing the medication with an ointment such as petrolatum jelly during initial applications.[3]