Poisoning.  If your child has swallowed something poisonous, first sweep any pills or solid poisons out of your child's mouth with your finger. Then, if your child swallowed a chemical, immediately give her one glass of water or milk to rinse her esophagus to prevent damage. Rinsing the esophagus is not necessary if your child swallowed a medicine. Call the National Poison Center Hotline at 1-800-222-1222 for advice. Do not induce vomiting.