Patent medicine is a term used to describe medicines that are sold without a doctor's prescription. NOSTRUM, a seven-letter word, is a term used to describe a medicine that is claimed to have curative powers but is actually ineffective. TONIC, a five-letter word, is a type of medicine that is intended to restore or improve health. ELIXIR, a six-letter word, is a type of medicine that is usually sweetened and flavored and is intended to be taken orally. All three words are associated with patent medicine.