Drug companies make up all sorts of names for drugs. This is because these items are protected by patent; companies often want to create an exclusivity vibe.
Drug names are vetted and tested and can be investigated under focus groups. They might give forth ideas of strength, calmness, etc. Names like Viagra and Lunesta are made up.
Problem is, I can't find this drug - Google keeps trying to correct it to diazepam. Are you perhaps misspelling the name? I doubt even a drug company in, say, India, would deliberately use the prefix nazi- in a drug name. There are plenty of other letter combinations out there.