What's the best treatment to get rid of salmonella infection?

Supportive care: Gastroenteritis, the most common manifestation of salmonella infection in us, generally requires a supportive care, i.e., maintaining good fluid balance. Exceptions include young infants and individuals with sickle cell disease who may require antibiotics treatment.

Salmonella Treatment: Oral hydration is important. Sometimes anti-diarrheal meds are used but may prolong illness. In some cases intravenous replacement of electrolytes & fluids may be required along w hospitalization. Antibiotics may be indicated in patients who are immunocompromised or with sepsis. http://www.mayoclinic.org/diseases-conditions/salmonella/basics/treatment/con-20029017