Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
The child may burst into tears if an unknown person makes eye contact or shriek if left even momentarily in the care of an unfamiliar person. This stranger anxiety is a normal part of a child's cognitive development. It usually begins at around eight or nine months and generally lasts into the child's second year. Normal separation anxiety develops during this same period.
To sum it all up â most babies have some stranger anxiety, which is the most prominent between around 8 months and 18 months of age. It has nothing to do with your parenting skills, or anything being wrong with the baby.