What is the best treatment for whooping cough? my son, age 20 has it. he had a severe reaction to the baby vaccine and never had the second shot.

Azithromycin: Azithromycin is the indicated treatment for pertussis. Supportive measures such as hydration, rest and cough suppressants are also helpful but not mandatory.

Not much: Taking a macrolide antibiotic such a azithromicin helps prevent spread of the disease, but only symptomatic relief helps the cough and usually not all that well. So a prescription cough medication, honey, humidity make help.