Some anti-convulsant (e.g., carbamazepine, phenytoin, gabapentin) are fda approved to treat seizures but have also been effective in the treatment of.. Neuralgias or neuropathies

Some anti-convulsant (e.g., carbamazepine, phenytoin, gabapentin) are fda approved to treat seizures but have also been effective in the treatment of:
a- Parkinsonism
b- Neuralgias or neuropathies***
c- Colitis
d- Nausea
e- All of the above