Ingredients explained
See the plant. Read what the NIH says. Then decide with your doctor.

Ginkgo
Ginkgo comes from one of the oldest kinds of tree in the world. Supplements usually use an extract made from the leaf.
What the NIH says
Bilberry
Bilberry is a dark berry that looks like a blueberry. It grows in northern Europe, Canada and the northern United States.
What the NIH says
Berberine
Berberine is a compound found in several plants, including barberry, goldenseal and phellodendron. It is sold as a dietary supplement.
What the NIH says
Milk thistle
Milk thistle is a tall plant with purple flowers. The main part of its extract is called silymarin.
What the NIH says
Turmeric (curcumin)
Turmeric is a plant in the ginger family. Curcumin is the part that gives the spice its yellow color.
What the NIH says
Ashwagandha
Ashwagandha is an evergreen shrub from India, Africa and the Middle East. Supplements use the root, the leaf or both.
What the NIH says
Valerian
Valerian is a plant whose root has long been used in herbal products for sleep.
What the NIH says
Photo credits are on each ingredient page.