- Study volunteer having any evidence of impairment of renal, hepatic, cardiac, lung or gastrointestinal function, by standard laboratory, imaging or monitoring procedures {The normal ranges of laboratory test-values will be followed as per the clinical reference laboratory, VIMTA VHS Research Centre, Chennai (A unit of Vimta Labs Ltd., Hyderabad)}. Study volunteers with a history of tuberculosis, epilepsy, asthma (during past 5 years), diabetes, psychosis or glaucoma will not be eligible for the study.