• Less than 6 years old.
• Fever over 101.5 F.
• Symptoms have gotten worse or new symptoms have developed after beginning an over the counter treatment.
• Asthma, COPD or other respiratory conditions.
• Cardiovascular conditions including congestive heart failure.
• Chest pain or shortness of breath.
• Immunosuppression from a health condition or from medications that suppress the immune system.
• HIV.
• Elderly and frail.
• Allergic or hypersensitive to over the counter medications.
• A cough that has lasted for more than 7 days.
• A cough that produces yellow, tan or green mucus or is secreting pus.
• Cough is from inhaling irritants or foreign material into the lungs.
• Rash.
• Swollen ankles or legs.
• Pregnancy.
• A child who is recovering from chicken pox or a viral illness.
• Taking drugs known as MAOI inhibitors or have taken them within 14 days. MAOI's include the following drugs: Zelapar (selegiline), Nardil (phenelzine), Marplan (isocarboxazid), and Parnate (tranylcypromine).