Sabadilla is useful to treat acute conditions like fever especially hay fever. It works on the mucus membrane of the nose and the lachrymal glands (glands present in the eyes). It is made from the cevadilla seeds. 

Following are the symptoms likely to be treated with this remedy 

Eyes 

Redness of eyes with watering of eyes 
Eye lids are red and burning 
Frontal pain, and blackness before eyes as if would faint 

Nose 

Running nose with violent sneezing 
Copious, watery nasal discharge (coryza) 
Chilliness, sensitive to cold 

Fever 

The chill stage predominates and there is extreme watering of eyes during fever 
The patient is thirstless 
Head and face are hot, hands and feet are cold 

Throat 

Soreness of throat worse form cold air 
Sensation as if a lump is present in the throat 
Empty swallowing is very painful 

Dose- As prescribed by physician. Can be taken with allopathic medicines. 

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