The method 1, wherein an effective efflux pump inhibitory concentration of the compound of {HEAD ~ formula} sufficient to improve {TAIL ~ time} above MIC for the antimicrobial agent by at least about 25% is administered 
The method 1 , wherein an effective efflux pump inhibitory concentration of the compound of { HEAD ~ formula } sufficient to improve { TAIL ~ time } above MIC for the antimicrobial agent by at least about 25 % is administered
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH