being without the use of drugs, as certain methods of medical treatment.
Origin of drugless
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for drugless
I refer especially to the power of mind in the curing of disease—as demonstrated by scores of drugless healers.
But I have no confidence in what you call "drugless healers."