Amoxicillin 250mg Lactobacillus 1.66 Billion Spores Capsules combines two components: amoxicillin, an antibiotic, and Lactobacillus, a beneficial bacteria. Amoxicillin is a commonly prescribed antibiotic that fights bacterial infections by inhibiting the growth and reproduction of bacteria. Lactobacillus, a probiotic, helps maintain a healthy balance of bacteria in the gut. These capsules are often used to treat various bacterial infections while supporting gut health.