"But the primary reason is to deliver nicotine into their bodies."

Nicotine gum also delivers much less nicotine to your body than a cigarette would.

This is usually done by delivering nicotine (or a substance very similar to it) in other ways.

Because these products are already delivering nicotine to your body, smoking a cigarette may leave you feeling nauseated.

Rather than delivering nicotine slowly to the bloodstream, though, it delivers an extract of the herb.

Eclipse delivers its taste and nicotine primarily by heating rather than burning tobacco.

Also, because replacement products deliver nicotine more slowly, they produce a less intense effect on the heart and blood vessels.

The inhaler does not deliver nicotine as rapidly as a cigarette.

And they do deliver nicotine - an addictive drug.

"We've got a product that delivers nicotine only while the patient is awake," he said.