Please be careful. Erythromycin is a powerful antibiotic particularly effectivel where penicillins (from pen G to ampicillin) are contraindicated either because of allergies or because of inefficacy in the treatment of bacterial infections. For distention, use lactaid, Beano, or Phazyme type products according to the manufacturer's directions. To treat reflux use Tums or Titrilac or any of the basic calcium salts in solution or tablet forms. good luck MM