Mefloquine anxiety, depression, unusual behavior, and suicidal ideations, among others. Neurologic effects include dizziness, loss of balance, and tinnitus. The label warns that mild symptoms may presage more serious ones, and that the drug should be discontinued at the first sign of symptoms. Mefloquine should not be used in people with a history of psychiatric problems. Central nervous system events requiring hospitalization occur in about one in 10,000 people taking mefloquine for malaria prevention, with milder events (e.g., dizziness, headache, insomnia, and vivid dreams) in up to 25%. When some measure of subjective severity is applied to the rating of adverse
Alternative treatments used for the common cold children by 18%. Vitamin C also decreased the severity of colds. A systematic review by the Cochrane Collaboration, last updated in 2014, examines twenty-four randomized controlled trials studying various echinacea preparations for prevention and treatment of the common cold. Echinacea showed no benefit over placebo for prevention. Evidence for treatment was inconsistent. Reported side effects were rare. 2007 meta-analyses conclude that there is some evidence that echinacea may reduce either the duration or severity of the common cold, but results are not consistent. Use of echinacea preparations is not currently recommended. In the twelfth century, Moses Maimonides wrote, "Chicken soup