The vastus lateralis (thigh) muscle is the best injection site for infants.
Nursing Tips / Infant Injection Site August 20, 2026 Cathy Parkes RN, BSN, PHN, CWCN, Share Share Link Close share Copy link The vastus lateralis (thigh) muscle is the best injection site for infants. Back to blog Leave a comment Name * Email * Comment * Please note, comments need to be approved before they are published.