1. the amount of medicine or drug to be taken at one time or over a period of time
2. the giving or administering of medicine in doses

Examples

• The doctor prescribed a higher dosage of antibiotics.
• Follow the dosage instructions on the bottle carefully.
• Children require a smaller dosage than adults.
• The recommended dosage is two tablets twice daily.
• Incorrect dosage can be dangerous to your health.
• The pharmacist explained the proper dosage schedule.