Splitting pills, depending on the Half Life
of the medication, often does not require perfect accuracy, as long as you take the other half
of the spilt on the next dosing, therefore, on average, you have taken 1/2 the dose each day for two days. Some medication should not be split, for a variety of reasons. Obviously Capsules are not candidates, nor some medications with enteric coating designed to delay the absorption of the medication. Cutting the pill ruins the coating.