Calculations Using Conversions/Percentages

Infection: Ear, nose, throat

Severity: Mild/moderate

• What is the usual dosage for adults & children (weight ≥ 40 kg)?

500 mg ever 12 hours

Infection: Ear, nose, throat

Severity: Mild/moderate

• What is the usual dosage for children (age > 3 months)?

25 mg/kg/day in divided doses every 12 hours

Infection: Ear, nose, throat

Severity: Severe

• What is the usual dosage for adults & children (weight ≥ 40 kg)?

875 mg every 12 hours

Infection: Ear, nose, throat

Severity: Severe

• What is the usual dosage for children (age > 3 months)?

45 mg/kg/day in divided doses every 12 hours

Percentages

Always refer to units per 100 total units

• Applies to units of weight (grams) and units of volume (milliliters)

When is %W/W (percent weight/weight) used?

Used when the active drug and the inactive base are both in the same unit of weight: grams (g)

What is an example of %W/W (percent weight/weight)?

1% = 1 g of active ingredient per 100 g of total product

• 1% = 1g/100g

When is %V/V (percent volume/volume) used?

The active drug and the inactive base are both the same unit of volume: milliliters (mL)

What is an example of %V/V (percent volume/volume)?

1% = 1 mL of active ingredients per 100 mL of total product (1% = 1 mL/100mL)

When is %W/V (percent weight/volume) used?

The active drug is in the unit of weight, grams, and the inactive base is in the unit of volume, milliliters

What is an example of %W/V (percent weight/volume)?

1% = 1g of active ingredient per 100 mL of total product (1% = 1g/100mL)