"We are more concerned about the chronic use of the product."

It is not recommended for chronic use in the elderly.

Most studies involve chronic use, rather than acute treatment of pain.

One of the most serious side effects is a toxicity in the eye (generally with chronic use).

Chronic amphetamine use and abuse - Review published in 2000.

Chronic use of alcohol used to induce sleep can lead to insomnia.

Chronic use of the drug might also cause trismus, the inability to open the jaw.

Federal investigators have said there was "a sufficient amount" of marijuana to indicate recent or chronic use.

Chronic use of ketamine may lead to cognitive impairments including memory problems.

Paradoxical effects may also appear after chronic use of benzodiazepines.