You are seeing a 54-year-old female with a past medical history of kidney stones who presents with a chief complaint of “I have a terrible summer cold

You are seeing a 54-year-old female with a past medical history of kidney stones who presents with a chief complaint of “I have a terrible summer cold.” She reports three days of low-grade fevers (peak of 100.0 °F), cough, sore throat, headaches, and nasal congestion. She reports no myalgia. Her temperature today is 37.3 °C (99.2 °F), respiration is 14/minute, pulse is 78 beats/minute, and blood pressure is 128/74 mmHg. Her head and neck exam reveal normal tympanic membranes, mildly congested nasal turbinates with thin mucous, erythema of the tonsillar pillars, and soft palate without tonsillar enlargement or exudate, and mild anterior cervical lymphadenopathy. Her lungs are clear to auscultation. Assuming that COVID-19 is not a consideration, which of the following options would be the most appropriate therapeutic option for this patient? A. Echinacea supplementation B. Oseltamivir (Tamiflu) 75 mg twice daily for five days C. Pseudoephedrine (Sudafed) as needed for nasal congestion D. Vitamin C supplementation E. Zinc supplementation