A new formula made with natural citrus oil could help cancer patients find relief from dry mouth, a common and painful side effect of radiation treatments.

The formula was created by researchers at the University of South Australia and Stanford University. It mixes limonene -- a citrus oil found ...

A lost or altered sense of taste, dry mouth and sores are common among COVID-19 patients and those symptoms may last long after others disappear, Brazilian researchers report.

Nearly 4 in 10 COVID patients experience impaired taste or total loss of taste, but dry mouth affects even more -- up to 43%, according to their broad review of more than 180 published studies.

It looked at or...