Giving medicines to children safely: checks, liquid measures, routes and sites by age (no doses)
- Safe practice
Children's medicines are weight-based and often liquid, so errors are common: check weight and order, measure with an oral syringe and pick the site by age.
What it is
Medication errors are more frequent in children than in adults: many doses are calculated from weight, adult products often have to be measured, split or dissolved, and young children cannot report effects. The nurse applies the rights and the three checks, confirms the child's weight in kilograms, measures liquids precisely with an oral syringe, chooses the route and injection site by age, and teaches the family how to give the medicine at home. This page gives no doses; calculations are on the weight-based dose page.
What it requires
- About half of hospitalised children in pooled studies had at least one medication error; intravenous medicines carry the highest risk.
- Prescribing and administration errors are both common; a longer stay and three or more medicines raise the risk.
- Unscored tablets should not be split; if splitting is unavoidable, use a scored tablet and a splitter.
- Subcutaneous site: the thigh under 12 months; the upper-outer triceps area from 12 months.
- Several injections in one limb are spaced apart; aspiration is not needed for vaccines.
Components
- The order with weight, age, drug, dose, route and time.
- Oral syringes, droppers, medicine cups; paediatric needles chosen by age and size.
- A drug reference or pharmacist for crushing, dilution and compatibility.
- Comfort items and the caregiver for positioning.
How it is applied (and why)
- Confirm the weight in kilograms on the order and that the dose was checked against it, per protocol — most paediatric doses depend on weight.
- Do the three checks and two identifiers at the bedside — children may not be able to say their name.
- For high-alert drugs, get an independent double check by a second nurse, per protocol — small dose errors are large for a child.
- Shake suspensions, measure in an oral syringe at eye level and remove the cap — it gives a precise volume and avoids choking.
- Ask the caregiver how the child takes medicine at home and use that method; the caregiver may give it — trust improves acceptance.
- Sit the child upright; with a dropper, place the liquid between gum and cheek; stay until it is swallowed — this lowers aspiration risk.
- If a tablet must be crushed or a capsule opened, confirm with the pharmacist first — some forms must not be altered.
- For injections, choose the site and needle by age and muscle mass and hold the child in a comfort position — the right site reaches muscle safely.
- Record at once and teach the family to measure with the syringe at home — it prevents repeat doses and home errors.
In nursing practice
- A cold item before an unpleasant-tasting liquid may help numb the taste.
- If the child coughs after swallowing or has a gurgling voice, do not continue; report it.
- If a dose seems unusual for the child's size, stop and check before giving it.
- Report every error or near miss in the institution's reporting system and monitor the child.
Common mistakes
- Using a kitchen spoon or an unmarked cup to measure liquids.
- Giving a medicine without a current weight on the order.
- Leaving the cap on an oral syringe or squirting the whole volume to the back of the throat.
- Mixing medicine into the child's milk or main food.
- Choosing the injection site by habit instead of age and muscle mass.
Test yourself
Think of the answer, then tap the question to see it.
Why must a child's weight be on the medication order?
Most paediatric doses are calculated from weight in kilograms, so the nurse needs it to check the dose.
Where is an intramuscular injection usually given in an infant?
In the vastus lateralis muscle of the anterolateral thigh.
Why should medicine not be mixed with a child's staple food?
The child may begin to refuse that food.
Why remove the cap from an oral syringe before giving a liquid?
The small cap is a choking hazard.
Connections
Educational content for students; it does not replace your institution's protocols, supervised clinical training or a prescriber's order. Dose-calculation examples use made-up numbers: they are educational, not a clinical order.
Sources: Nursing Skills, 15.2 Basic Concepts of Administering Medications (Open RN, CC BY 4.0) (Open Resources for Nursing (Open RN) / LibreTexts, 2021); Vaccine Administration (General Best Practices for Immunization) (Centers for Disease Control and Prevention, 2024); Challenges and considerations in manipulating oral dosage forms in paediatric healthcare settings: a narrative review (Acta Paediatrica 114(10):2480–2489) (Acta Paediatrica (open access, PMC12420886), 2025); Global prevalence and associated factors of medication errors in hospitalized pediatric patients: systematic review and meta-analysis (JMIR Pediatrics and Parenting 9:e100070) (JMIR Pediatrics and Parenting (open access, CC BY 4.0, PMC13521510), 2026).
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Representative model, for educational purposes only.