Medication
When you buy liquid medicines, a portion of that is the main drug that you need, mixed with… who knows what else. The box below comes from a medicine bottle that I found in the cupboard. In each 15mL of liquid there is 22.5mg of the drug Benzydamine Hydrochloride. This drug is an anti-inflammatory and is essentially what is making you feel/get better. When these medications are made, they need to make sure that the dosage is not too large or too small for the patient.
Formula for children and infants
Name
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Age group
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Formula
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Fried’s rule
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Children 1 – 2 years
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\(\text{Dosage}=\dfrac{\text{age of infant (months)} \times \text{adult dose}}{150}\)
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Young’s rule
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Children 1 – 12 years
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\(\text{Dosage}=\dfrac{\text{age of child (years)} \times \text{adult dose}}{\text{age of child (years)} +12}\)
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Clark’s rule
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Children general
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\(\text{Dosage}=\dfrac{\text{weight (kg)} \times \text{adult dose}}{70}\)
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