Charak Samhita
ते भेषजमयोगेन कुर्वन्त्यज्ञानमोहिताः । व्याधितानां विनाशाय क्लेशाय महतेऽपिवा ॥६॥
These ignorant ones, by administering improper remedies, cause end of the patient or severe misery to the patient.
english translation
te bheSajamayogena kurvantyajJAnamohitAH । vyAdhitAnAM vinAzAya klezAya mahate'pivA ॥6॥
hk transliteration by Sanscript