When calculating medication dosages, if a client requires 400 mg of quetiapine split into two doses, how many tablets (200 mg each) should be administered at a time?

To determine how many tablets of quetiapine a client should receive in each dose, it is important to start with the total medication requirement and how it is divided. The client needs a total of 400 mg of quetiapine, and this dosage is to be split into two doses.

When this total amount is divided by two, each dose will be 200 mg. Given that each tablet contains 200 mg, the client would need to take only one tablet for each dose.

Therefore, administering one 200 mg tablet at a time for the two doses correctly meets the total requirement of 400 mg. This reasoning demonstrates how medication calculations are conducted, taking into account both the total dosage needed and how it can be effectively divided and administered.