TaperMate

Gabapentin pharmacy liquid taper calculator

If you have a ready-made or compounded gabapentin oral liquid, this works out how much to measure from its label strength. Enter the concentration and your target dose below.

Gabapentin · pharmacy liquid

Single dose calculator

mg
mL
As written on the label — e.g. 5 mg / 5 mL.
mg
What you want to take today.
Take this much of the liquid
—mL
of your — mg / — mL liquid, to get a 50 mg dose.
Formula volume to take = target dose × (mL ÷ mg of the label strength)
With your numbers 50 × (— ÷ —) = — mL
Measure to nearest 0.1 mL
Use an oral syringe; for very small volumes ask your pharmacist about a 1 mL syringe.
Item 14L · Verify Validate this calculation
Label strength
— mg / — mL
Per mL
— mg — mg ÷ mL
Target dose
50 mg — what you want to take
Volume to take
— mL
Check
— × (— ÷ —) = — mg ✓
Every input and the formula are shown so you can verify the result by hand.
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Measuring a pharmacy liquid, step by step

Method The maths above gives the number; these steps are the practical part. Adapted from the RELEASE Toolkit. Adjust the amounts to what your prescriber agreed.
  1. Read the concentration on the label (e.g. 5 mg / 5 mL).
  2. Use the calculator above to convert your target dose into a volume.
  3. Shake the bottle if it is a suspension, then draw the volume with an oral syringe.
  4. Take it, and store the bottle as directed on the label.

About a pharmacy liquid

Some medicines come as a ready-made oral liquid, and a compounding pharmacist can make one for others. Either way, the bottle is labelled with a concentration — how many milligrams are in a given number of millilitres, like 5 mg / 5 mL or 5 mg / 1 mL.

Enter that concentration exactly as it's written on your label — both numbers are editable — then your target dose. The calculator works out how many millilitres to draw up. There's no mixing involved; you're measuring a liquid someone else has already made to a known strength.

Always check the label each time you collect a new bottle — concentrations can differ between brands and between compounded batches. Measure with an oral syringe, not a kitchen spoon.

Next step

Plan your full taper in TaperMate

This calculator handles one dose. The TaperMate app calculates a full reduction schedule with hold periods, microtapering and symptom monitoring — so each new dose is one tap away, not a daily maths problem.

Download on theApp Store Get it onGoogle Play

Sources to discuss with your prescriber