folk medicine/remedy
From Longman Dictionary of Contemporary Englishfolk medicine/remedyfolk medicine/remedyMAa traditional type of medical treatment that uses plants or simple treatments rather than scientific methods → folkExamples from the Corpusfolk medicine/remedy• GUHgl-MUHgl n. A folk remedy for sore throats and colds.• And as in folk medicine generally, if you believe it will help, it probably will.