TaperMate

Venlafaxine weighing taper calculator

Weighing a crushed venlafaxine tablet (or a capsule's contents) on a milligram scale lets you measure precise small doses. Enter your numbers below to see how much to weigh — and the formula so you can check it yourself.

Venlafaxine · weigh

Single dose calculator

mg
Active drug in one whole tablet or capsule.
g
Weigh a whole tablet or the full contents of a capsule (excluding the capsule shell) on your scale. Average a few for accuracy.
mg
What you want to take today.
Amount to weigh out
0.1g
to get a 25 mg dose. Scales read mass, so round below.
One 50 mg tablet physically weighs 0.2 g — so each gram you weigh holds about 250 mg of active drug. The calculator scales by tablet weight, not by strength.
Formula amount to weigh = (target dose ÷ tablet strength) × tablet weight
With your numbers (25 ÷ 50) × 0.2 = 0.1 g
Your scale reads to
Round up · safer on withdrawal
0.1 g
≈ 25 mg — slightly higher, generally safer.
Round to nearest
0.1 g
≈ 25 mg — closest to your target.
Item 14L · Verify Validate this calculation
Tablet strength
50 mg per tablet
Tablet weight
0.2 g (total mass)
Per gram
250 mg of drug — strength ÷ weight
Target dose
25 mg — what you want to take
Amount to weigh
0.1 g (before rounding)
Check
(0.1 ÷ 0.2) × 50 = 25 mg ✓
Every input and the formula are shown so you can verify the result by hand.
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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.

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Example methodAdapted from the RELEASE Toolkit. Adjust the amounts to suit what your prescriber has agreed.

Weighing a venlafaxine dose

Weighing a crushed venlafaxine tablet (or a capsule’s contents) on a milligram scale gives precise small doses. The key idea: a tablet’s physical weight isn’t the same as its drug content, so the calculator scales by tablet mass.

What you'll need

  • A milligram scale (ideally reading to 0.001 g)
  • A small weighing boat or spatula
  • A pill crusher or mortar

Method

  1. Weigh a whole tablet or the full contents of a capsule first — average a few for accuracy.
  2. Enter that weight above with your target dose to get the amount to weigh.
  3. Crush the tablet, then weigh out that amount on the scale and take it.
  4. Make each dose fresh; don’t pre-weigh several days at once.

Tips

  • Weigh on a level, draught-free surface and tare the boat first.
  • Round up for a slightly higher dose if you’re sensitive to withdrawal — the calculator shows both options.

When not to use this method

  • Modified-release formulations — crushing destroys the release profile.

Sources to discuss with your prescriber