Cantharidin from Edge Pharma is a direct replacement for Canthacur. Due to compounding pharmacy regulations, US-based practices cannot purchase non-patient specific office use Canthacur from Canadian-based pharmacies. Cantharidin also cannot be purchased from traditional (503A) compounding pharmacies for office use, since these facilities do not maintain the proper process controls and undergo the required testing to ensure the product is safe for office use. Cantharidin from Edge allows practices to both be in compliance, as well as be secure the product is made in an FDA registered and inspected outsourcing facility. Qualified practitioners can buy Cantharidin Topical Solution in a 10 ml glass multi-dose vial without providing patient names. Our online system makes purchasing cantharidin quick and easy.