Pinus pinaster is a type of pine tree native to areas of the Mediterranean including Portugal, Spain, France, and Morocco. The trees are sometimes known as maritime or cluster pines.
The bark of maritime pines is thick and grows in various shades of brown, orange, and red.
Although many species of pine appear to have beneficial health properties, the majority of pine bark extracts sold as herbal supplements today come from maritime pines (2Trusted Source, 3Trusted Source, 6Trusted Source).
Pine bark extract is sold under a variety of trade names with some of the most common being:
Sometimes these supplements contain other ingredients in addition to the bark, such as:
more plant extracts
cellulose or glycerin as fillers