Bryonia: in bilious headache.
Butyl-chloral Hydrate.
Caffeine, with antipyrine or sodium bromide.
Cajeput Oil: locally.
Camphor: internally, and saturated solution externally.
Camphor with acetanilid or antipyrine, in nervous headache.
Cannabis Indica: in neuralgic headache.
Capsicum: plaster to nape of neck.
Carbon Disulphide.
Carbon Tetrachloride.