Do not give Avil at home for a suspected antibiotic allergy without a pediatric clinician’s advice, especially if you mean Avil injection. The dose depends on the exact formulation, age, symptoms, and child’s condition.

Stop the suspected antibiotic and seek urgent medical care now if there is any:

These can be anaphylaxis. The first treatment is IM adrenaline (epinephrine), not Avil. Emergency guidance uses epinephrine 0.01 mg/kg IM (maximum 0.5 mg); for 17 kg, that is 0.17 mg IM of the 1 mg/mL preparation, administered by trained medical staff or via the child’s prescribed auto-injector. Antihistamines can help itching/hives but do not prevent or reverse airway swelling or shock. Rosen’s Emergency Medicine Concepts and Clinical Practice states epinephrine is first-line for anaphylaxis.

If it is only a mild itchy rash or a few hives, contact the prescribing pediatrician/nearest emergency department today before giving any medication. Avil injection should be administered under medical supervision, as noted in the product information.