Drug content in the container

10. Dose - general concepts 10.1) Oral liquid 10.1.1) Oral liquid Oral liquid Normal 1

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A patient is taking an oral solution 2 tsp QID. If the patient is taking 638 mg of the drug in each dose, and if the bottle supplies the drug for 3 weeks, then calculate the amount of drug (in gram unit) contained in the bottle.

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lb equals 53.592 g kg

    Volume of each dose (2 tsp) = 10 mL.
    Number of dose per day (QID) = 4
    Numder of days the bottle is supplied for (3 weeks) = 21
    Therefore, volume of the medication in the bottle = 10 × 4 × 21 mL = 840 mL.
    Given that, there is 638 mg drug contained in each dose (2 tsp). Therefore, we can write:

    `(638\quad mg)/(10\quad mL)=x/(840 \quad mL)`
    `therefore x = 53592 \quad mg = 53.592\quad g` Ans.