If your pharmacy changes your pregabalin brand, the beads per capsule or the tablet weight (in grams) can differ — even at the same strength. Enter both brands and this works out the amount to take on the new one to match your current dose.
You weigh a measured amount of the medication on a milligram scale — some people crush a tablet to an even powder, others scrape small amounts from a tablet or weigh capsule beads. It's the method to reach for when a medicine can't be made into a reliable liquid and doesn't divide cleanly with a cutter.
The key thing to understand: a tablet's physical weight is not the same as its drug content. A "50 mg" tablet might weigh 0.18 g once you include the binders and fillers — so the calculator scales by the tablet's measured weight, and shows how much active drug each gram holds. Weigh a whole tablet or the full contents of a capsule (or the average of a few) to get an accurate weight.
Accuracy depends on your scale and on the drug being evenly distributed through the tablet — which isn't true for every formulation. Use a scale that reads to 0.001 g (1 mg), weigh onto a small weigh-boat or paper, and don't use this method for modified-release or coated tablets. If you need very small doses, a compounded liquid is usually more reliable.
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.
