The berries of various species contain Theobromine, a compound similar to caffeine.

The red berries contain high amounts of oxalic acid, and can cause painful irritation to the skin.

Each berry contains one to five seeds which are yellow when ripe.

These berries contain oxalic acid, which is only very moderately poisonous.

The berries and juice contain chemicals that act as antioxidants, which are thought to protect body cells from damage.

The berries of these plants contain a natural, low-sudsing detergent called saponin.

These berries contain high levels of the poisonous alkaloid solanine.

A berry might contain one seed or many.

Each berry usually contains two seeds, but 5-10% of the berries have only one; these are called peaberries.

The berry contains a few seeds each about a centimeter long or slightly larger.