Antibiotics have drastically improved the health and life expectancy of humans, yet the abrupt increase of antibiotic usage for animals, agriculture and healthcare has induced antimicrobial resistance. Antimicrobial resistance is leading to resurgence of deadly infectious diseases, calling for new cures. This book presents advanced therapies based on new and complementary drugs, and alternative techniques and strategies, such as phages, probiotics, flavonoids, essential oils, cellulose, peptides, nano delivery, iron starvation and vaccines.