Nicam 4% Gel Nicam 4% Gel treats inflamed pimples & spots, known as mild to moderate inflammatory acne vulgaris, which occurs mainly on the face, back & chest. The active ingredient is nicotinamide, which has an anti-inflammatory action that reduces swelling, redness & tenderness. Nicotinamide is not an antibiotic, it is related to an essential vitamin in our diet (Vitamin B3) Nicam 4% Gel is suitable for use by adults, children & the elderly & is not known to affect, or to be affected by, any other medicines.