A headache may begin at the back of the neck and skull, and the person may feel chills and heat running up and down the spine. Anxiety, trembling, dizziness, perspiration, and moderate fever are other indications for Gelsemium . Headache usually occurs, along with oversensitivity to sound, bright light, and odors. A person who needs Nux vomica is often very irritable, feeling worse from exertion and worse from being cold in any way. Oscillococcinum is one of the common names used for a remedy that is widely used for prevention and treatment of flu in the United States and Europe.
Research suggests that it has strong antiviral effects.
When this remedy is needed during flu, the person has a fever with an easily-flushing face, and feels very weak and dizzy. Headache, hoarseness, sore throat, and cough are likely. If the focus is digestive, stomach pain and nausea or vomiting usually occur. A person who needs this remedy often has a strong anxiety, wanting others to be around to offer company and reassurance. Strong thirst, with a tendency to vomit when liquids warm up in the stomach, is a strong indication for Phosphorus .