Final answer:
To determine the number of capsules of 500 mg of amoxicillin needed for the whole supply, calculate the total number of doses and divide it by the dose per capsule.
Step-by-step explanation:
To determine the number of capsules of 500 mg of amoxicillin needed for the whole supply, we need to calculate the total number of doses and divide it by the dose per capsule.
The patient is taking amoxicillin 500 mg three times a day for seven days, so the total number of doses is 3 times/day x 7 days = 21 doses.
Each capsule contains 500 mg of amoxicillin, so 21 doses x 500 mg/dose = 10,500 mg of amoxicillin is needed for the whole supply. Therefore, 21 capsules of 500 mg of amoxicillin should be dispensed for the whole supply.