Final answer:
The recommended amoxicillin premedication dose for an adult patient before certain dental procedures is 2 g. This helps prevent infective endocarditis in at-risk individuals.
Step-by-step explanation:
The recommended amoxicillin premedication dose for an adult patient is D. 2 g. This dosage is typically recommended for adults before certain dental procedures, especially for those with specific heart conditions that may put them at risk for infective endocarditis. It's taken usually an hour before the dental procedure. The options A. 300 mg B. 500 mg C. 600 mg are not standard premedication doses for amoxicillin in adults for this purpose. It's important to follow the prescribed dosage from a healthcare professional.