Voltarol 12 Hour Emulgel P 2.32% Gel Voltarol 12 Hour Emugel P 2.32% Gel targets pain & inflammation at the source, providing concentrated, long lasting pain relief from inflammation, rheumatic pain, joint & muscular sprains, strains & bruises. The non-greasy, non-staining cream-like gel both cools & soothes & as it is applied to the skin. Used twice daily, Voltarol 12 Hour Emugel P 2.32% Gel forms a reservoir of the active ingredient diclofenac on the skin, allowing the active ingredient to penetrate the skin throughout the day for pain relief that lasts.