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
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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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