Aconitum napellus is an excellent short acting remedy also known as Monkshood.The entire plant is used except for the roots. An especially useful remedy when symptoms arise from sudden shock or fright. This quick acting remedy can also be used for sudden change in weather or exposure to dry cold winds. Physical and mental restlessness with anxiousness is key features that run through this remedy. 
 
Headache sudden onset of bursting ,throbbing headache. Sensation of band around the head. 
HeadInjury to the eye to relieve pain and inflammation. 
Ear pain with increased sensitivity to noise. 
 
Respiratory Initial stages of common cold having to sneeze with clear, hot, nasal discharge. Burning in the throat with eye pain. 
The best remedy for constant short dry cough. This short cough starts suddenly and mainly after midnight. 
FeverUnexpected sudden high fever after exposure to cold weather. 
 
Bitter taste for everything except water 
Severe thirst for cold water 
Patient wants to be covered always 
 
DoseTake 15 drops of Aconitum Napellus mother tincture in half a cup of normal water 3 times a day or after every 30 minutes during fever till fever subsides, unless otherwise prescribed by physician. 
 
Precautions: Maintain half an hour gap between food/drink/any other medicines and homeopathic medicine. 
Avoid any strong smell in the mouth while taking medicine e.g. camphor, garlic, onion, coffee, hing. 
 
Side effects: none reported 
 
 
Use under medical supervision.