Common cold affects nose and throat, caused by viruses. Most people recover in 7-10 days without medical care. Adults typically get 2-3 colds yearly, children more frequently
Contains chlorpheniramine 4mg and phenylephrine 10mg. Used to treat cold and allergy symptoms including sneezing and congestion. Brand name discontinued in US, may have FDA-approved generic versions
Contains acetaminophen, pheniramine, and phenylephrine for respiratory symptoms. Treats allergy, cold, and flu symptoms including runny nose and congestion. Acetaminophen relieves pain and fever, pheniramine reduces histamine effects. Phenylephrine acts as decongestant to shrink nasal blood vessels
Meta-analysis examined 10 randomized trials involving vitamin C for common colds. Trials required daily doses of at least 1g vitamin C for healthy individuals. All trials were double-blind and placebo-controlled
Zinc gluconate is a zinc salt of gluconic acid. Contains two gluconate anions for each zinc(II) cation. Pure form is white to off-white powder. Produced industrially by fermentation of glucose
Common cold affects upper respiratory tract, causing cough, sore throat and runny nose. Symptoms appear within 16 hours after exposure, peak 2-4 days later. Most common viruses are rhinoviruses (30-80%), followed by coronaviruses and adenoviruses. Symptoms usually resolve in 7-10 days, sometimes up to 3 weeks