GENERIC a consumer product having no brand name or registered trademark.

That is the correct spelling of the trademark name Valium(generic name diazepam).

In the US, class headings are not accepted in trademark applications; the specific goods or services must be listed.

This may not be the case in other countries.

Yes, that is correct. A generic term, which refers to the common name or category of a product or service, cannot be protected under trademark law unless it acquires a secondary meaning. Secondary meaning is when consumers associate the term with a specific source or brand rather than its generic meaning.

A a consumer product having no brand name or registered trademark, however, sometimes manufactures will sell their items unmarked for lower prices then the item becomes generic.