Effects of zoloft on infants. Zoloft is in the FDA Category C. . Feeding Infants and Babies; Infectious Diseases; Medical . . . . Because of the potential risk to the infant . . . . Sertraline (Zoloft ®) in Pregnancy and Breastfeeding . . . . . . How to use Zoloft Oral. Zoloft is the "best drug choice . . . . . of Pediatrics has classified sertraline as a drug "for which the effect on nursing infants . Known Zoloft Side Effects. . . . . Zoloft is a selective serotonin reuptake inhibitor . Ser... more