- Lamasil is the most potent antifungal available. Unlike most antifungal products, Lamasil uses terbinafine to actually kill fungus, rather than just stopping its growth. Lamasil is a sophisticated third-generation antifungal medication containing an allyamine compound - terbinafine. Lamasil works well on fungal infections of the feet (athlete's foot), groin (jock itch) and other skin surfaces (ringworm). Lamasil is as effective or more effective than all other prescription and non-prescription topical antifungals. Lamasil - for when only the best will do.
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