The use of antibiotics for newborns may have certain effects on the body, but as long as they are used regularly, they generally do not lead to bad health.
Newborns are relatively small, generally do not recommend the arbitrary use of drugs, especially not to abuse antibiotic drugs, otherwise there is a risk of causing damage to body parts, especially may lead to brain nerve damage, but also to the stomach and intestines as well as the liver to cause certain effects, resulting in damage.
However, if there is a pathogenic infection in the newborn, such as bacterial or mycoplasma infection, antibiotic drugs need to be used under the direction of a doctor, and usually will not cause too much effect on the body.
Antibiotic medication for newborns should always be directed by a doctor, and should not be used arbitrarily on your own.