If Guaifenesin (Robitussin) 300 mg is prescribed, how many milliliters should the nurse administer for each dose?

To determine the appropriate volume of Guaifenesin to administer when a 300 mg dose is prescribed, it’s important to consider the concentration of the medication available. Guaifenesin is commonly available in a liquid formulation with a concentration of 100 mg per 5 mL.

To calculate the required volume for a 300 mg dose, a conversion can be performed:

1. First, note that 100 mg of Guaifenesin is found in 5 mL.

2. To find out how many mL correspond to 300 mg, you can set up a proportion or a simple calculation:

[

\text{If } 100 \text{ mg} = 5 \text{ mL}

]

[

300 \text{ mg} = x \text{ mL}

]

This leads to the calculation:

[

x = \frac{300 \text{ mg} \times 5 \text{ mL}}{100 \text{ mg}} = 15 \text{ mL}

]

Thus, for a dose of 300 mg, the nurse should administer 15 mL. This