Depakote EC is enteric coated Depakote, which must be taken in multiple doses daily. Depakote ER is extended release Depakote, which can be taken once daily, and usually requires a dose increase of 8-20% compared with Depakote EC.
depakote er is extended release where medication is maintained at certain levels throughout an extended period of time whereas depakote ec (or dr) is delayed release where it's enteric coated and the...
Depakote is an anticonvulsant used for epilepsy, migraines and (mood stabilizer) for bipolar disorder. Darvocet is a strong painkiller which I believe is considered a narcotic.
The -er suffix is Germanic and the -or suffix is Latin. Generally speaking, if the the English word derives directly from a Latin agent noun, such as orator or professor, it retains the -or ending....