How much aluminum hydroxide in kilogram is needed for the batch size?

Question

Antacid tablet

Aluminum hydroxide - 325 mg

Mannitol - 812 mg

Sodium saccharin - 0.4 mg

Sorbitol (10% w/v solution) - 32.5 mg

Magnesium stearate - 35 mg

Mint flavor concentrate - 4 mg

Batch size: 150,000 tablets

Answer 1

1 tablet requires 325 mg of aluminum hydroxide, Al(OH)₃

To find the amount of aluminum hydroxide (in kg) needed for 150,000 tablets we perform the following calculations:

325 mg Al(OH)₃ / tablet x 150,000 tablets x 1 g / 1000 mg x 1 kg / 1000 g = 48.8 kg of Al(OH)₃