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Table 3 Interaction between antibiotics and cinnamon bark oil or cinnamaldehyde against 30 clinically isolated MDR-PA strains

From: Efficacy of cinnamon bark oil and cinnamaldehyde on anti-multidrug resistant Pseudomonas aeruginosa and the synergistic effects in combination with other antimicrobial agents

Combinations % isolates of bacteria in each interaction activity
SYN IND ANT
Colistin Cinnamon bark oil 16.7 83.3 ND
Cinnamaldehyde 10 90 ND
Meropenem Cinnamon bark oil 3.3 96.7 ND
Cinnamaldehyde ND 100 ND
Imipenem Cinnamon bark oil ND 100 ND
Cinnamaldehyde ND 100 ND
Doripenem Cinnamon bark oil ND 100 ND
Cinnamaldehyde ND 100 ND
Ciprofloxacin Cinnamon bark oil ND 100 ND
Cinnamaldehyde ND 100 ND
Piperacillin Cinnamon bark oil ND 100 ND
Cinnamaldehyde ND 100 ND
Ceftazidime Cinnamon bark oil ND 100 ND
Cinnamaldehyde ND 100 ND
  1. SYN synergy, IND indifferent, ANT antagonist, ND not detected