Hypoglycemia, also known as low blood sugar, is when blood sugar decreases to below normal levels. This may result in a variety of symptoms including clumsiness, trouble talking, confusion, loss of consciousness, seizures, or death. A feeling of hunger, sweating, shakiness, and weakness may also be present. Symptoms typically come on quickly.
Tea brewed from dried bilberry fruits has also been used to soothe a sore throat or sore mouth tissue. In folk medicine, bilberry leaf has been used to treat a number of conditions including diabetes. Limited evidence from a few animal studies shows that it may have a decreasing effect on blood sugar.
1 High doses or extended use of bilberry leaf or leaf extract are considered unsafe due to possible toxic side effects. 2  Tell all your health care providers about any complementary health approaches you use. 3  Give them a full picture of what you do to manage your health. 4  This will help ensure coordinated and safe care.