Basic research using leaf extracts as a model of tea consumption showed potential anti-obesity properties in mice.

The leaf extract was a popular pest control method up to the beginning of the 20th century.

These researchers report an increase in the frequency of chromatid aberrations when the leaf extract was added to cultures.

Taking ginkgo leaf extract by mouth seems to improve some thinking skills in healthy young to middle-aged people.

Some research suggests that a specific combination of ginkgo leaf extract plus American ginseng might be safe in children when used short-term.

For the treatment of normal tension glaucoma: ginkgo leaf extract 40 mg 3 times daily up to four weeks.

There have been a few reports of liver problems in some people who have taken an aloe leaf extract; however, this is uncommon.

Taking olive leaf extract also seems to lower blood pressure in patients with high blood pressure.

Six rats were injected with the leaf extract and five of them died.

A study on rats also found evidence that a leaf extract of the plant prevented diarrhea.