The Anti-Fungal Pen/Si Health by Opti-Nail is a Fungal Nail Repair Pen formulated with glycerin and ammonium lactate. It contains acetaminophen as the active ingredient and is alcohol-free. This pen has a volume of 0.125 fl oz and is designed to target and treat fungal nails on the body area of the nails. With an expiration date of 05/2025 or later, this product offers a convenient and effective solution for combatting fungal nail infections.