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How to Measure Liquid Medicine

Kitchen spoons are not dosing tools. A difference of just 1 mL can mean an under-dose that won't help — or an over-dose that could harm. This guide shows you exactly how to use the right tool, the right way.

Oral syringe Best for infants & small doses

An oral syringe is the most accurate tool for doses under 10 mL. It lets you draw exactly the right amount with no guesswork.

Children's 160 mg / 5 mL 10 7.5 5 2.5 0 ← 5 mL Step 1 — Insert tip into medicine bottle Step 2 — Pull the plunger to the mL mark Step 3 — Check you're at exactly 5 mL Step 4 — Aim at the cheek, give slowly
1

Insert tip into the bottle

Turn the medicine bottle upside-down. Insert the syringe tip through the adapter or opening and push in until snug.

2

Pull the plunger slowly

Draw back the plunger until the bottom edge of the plunger lines up exactly with your dose marking. Go slowly — you can always push back excess.

3

Read the mark at eye level

Hold the syringe at eye level to read the line accurately. Viewing from above or below makes the marking look different than it actually is.

4

Aim at the inner cheek

Place the tip toward the inside of the cheek — not the back of the throat. Squirt slowly in small amounts so your child can swallow without choking.

Reading the markings correctly

✓ Correct

Read at eye level — plunger bottom aligns with the line

✗ Wrong

Viewing from an angle makes it look like less medicine than it is

Dosing cup For older children, larger doses

Dosing cups work well for children old enough to drink from a cup and for doses of 5 mL or more. Accuracy matters just as much as with a syringe.

15 mL 10 mL 5 mL ½ tsp 2 tsp 1 tsp ← 10 mL target Step 1 — Set cup on a flat surface Step 2 — Pour slowly to the correct line Step 3 — Read at eye level, then adjust Step 4 — Give the full amount right away
1

Set the cup on a flat surface

Place the dosing cup on a counter or table before pouring. Holding it in your hand while pouring makes it harder to read the level accurately.

2

Pour slowly to the line

Tilt the bottle gently and pour until the medicine surface reaches the correct graduation mark. Thick liquids (like some suspension medicines) can be hard to pour — go slow.

3

Read at eye level

Crouch down so your eyes are level with the graduation line, or lift the cup to eye height. The bottom of the curved liquid surface (the meniscus) should sit on the line.

4

Give the full amount

Have your child drink from the cup completely — medicine left behind means an under-dose. For thick liquids, let it drain fully before rinsing.

Common measuring mistakes

These are the most frequent dosing errors seen in pediatric emergency rooms. All are easy to avoid once you know what to look for.

Kitchen spoons

A household teaspoon holds anywhere from 3 to 7 mL depending on the spoon — not the 5 mL it should. This can mean double the intended dose.

Never use a kitchen spoon

Reading from an angle

Viewing the syringe or cup from above makes the liquid level appear lower than it is — leading to too much medicine being drawn. Always read at eye level.

Always read at eye level

Concentration mix-up

Children's and Infant formulas of the same medicine can have very different concentrations. The dose in mL is different for each. Always check the bottle label.

Always match the mL to your bottle

Dosing cups for small amounts

Cups are harder to read accurately for doses under 5 mL. For infants or small children, an oral syringe is significantly more precise for small volumes.

Use a syringe for doses < 5 mL

Guessing when no device is present

If the measuring device is lost, pharmacies provide free oral syringes on request. Ask before using anything else — guessing is never safe.

Ask your pharmacist for a syringe

Dosing too soon

Wait the full interval between doses — at least 4 hours for acetaminophen and 6 hours for ibuprofen. Giving another dose early can cause an accidental overdose even with correct volume.

Always check the time of the last dose

mL vs mg — what's the difference?

mL
milliliters

This is the volume you measure and give — it's what the syringe or cup markings show.

Example: draw to the 5 mL line on the syringe.

mg
milligrams

This is the amount of medicine in each mL. It depends on the concentration of the bottle.

Example: 5 mL of 160 mg/5 mL liquid = 160 mg of acetaminophen.

CloseDose shows you the mL to measure — that's all you need to give the right dose. The mg is calculated for you.

🧮 Ready to calculate the dose? Enter your child's weight and get the exact mL to measure — no math required. ⚖️ Don't know your child's weight? See the tared scale weighing guide for infants who can't stand alone.