LederCillin Vk is an antibiotic medication used to treat bacterial infections. There are several synonyms for this medication, including Penicillin V potassium, Phenoxymethylpenicillin, and Pen-Vee K. Penicillin V potassium is the active ingredient in LederCillin Vk that helps fight infections caused by bacteria. This antibiotic medication is prescribed to treat infections such as strep throat, tonsillitis, dental abscesses, skin infections, and other bacterial infections. Phenoxymethylpenicillin and Pen-Vee K are also commonly prescribed for similar infections. Understanding these synonyms can help patients discuss their medication options with their healthcare provider and ensure they are receiving the right treatment for their condition.