57 Patient Double-blind placebo-controlled study - This 4 armed study compared PDLabs' Transdermal Verapamil 15% Gel to two other drugs and placebo to determine efficacy and safety of the medication.
645 Patient Study - This open-label study evaluated the efficacy and safety of PDLabs' Transdermal Verapamil 8% Gel
214 Patient Study - This open-label study evaluated the efficacy and safety of PDLabs' Transdermal Verapamil 8% Gel
Skin Penetration Study - A study demonstrating the ability of PDLabs' Transdermal Verapamil 15% Gel to successfully penetrate to the tunica albuginea.