Receive a Printable Savings Card for Kerydin topical solution just by signing up here. Simply enroll in the Kerydin instant savings program and print your savings card. It’s that simple! This prescription savings card can be presented at any participating retail or mail order pharmacy for savings toward an eligible Kerydin prescription. Kerydin is a topical solution used in the treatment of fungal infections of the toenails. This offer expires March 29, 2015.