Final answer:
When a patient with CAP has had antibiotics within the last 3 months, the recommended medication is macrolides or beta-lactams.
Step-by-step explanation:
When a patient with Community-acquired Pneumonia (CAP) has had antibiotics within the last 3 months, the recommended medication is macrolides or beta-lactams. These classes of antibiotics are commonly prescribed and effective against most strains of bacteria causing CAP. Examples of macrolides include azithromycin, clarithromycin, and erythromycin, while examples of beta-lactams include amoxicillin and penicillin. In some cases, a combination of antibiotics may be given to ensure optimal treatment.