If you want to stop taking Symmetrel capsules ask your doctor who will tell you how to reduce the dose gradually. Q: When should you call the doctor? A: If you re sick and have been to Mexico, or have close contact with someone who has, call your doctor for advice about being tested and treated, Tallman says. Symmetrel should be used with extreme caution in CHILDREN younger than year safety and symmetrel postforskott effectiveness in these children have not been confirmed. There were 20 lab-confirmed cases of swine influenza in humans in the United States, and 18 lab-confirmed cases in Mexico, according to World Health Organization statement on Sunday. Action Amantadine is the antibacterial medication which action is directed to prevent penetration of virus into the cells of human it is used for the treatment of flu. Novavax claims to have developed virus-like particle VLP technology that allows the company to manufacture vaccine to match particular virus strain in about three months.