Overview Ornithine ketoglutarate is a salt made from the amino acid ornithine and the glutamine precursor alpha-ketoglutarate. People use it as a m...

Overview Ornithine is a chemical called an amino acid. It is made in the body. It can also be made in a laboratory. People use it as a medicine. Or...

Overview Wheatgrass is a kind of grass. The above-ground parts, roots, and rhizome are used to make medicine. Wheatgrass is primarily used as a con...

Overview Tyrosine is an amino acid. Amino acids are the building blocks of protein. The body makes tyrosine from another amino acid called phenylal...

Overview Theanine is an amino acid found in tea. It is also found in some mushrooms. It is similar in structure to glutamic acid, another amino aci...

Overview Theaflavin is a chemical in black tea that is formed from fermentation of green tea. It is used as medicine. People take theaflavin for hi...

Overview Tannic acid is found in the nutgalls formed by insects on twigs of certain oak trees (Quercus infectoria and other Quercus species). It is...

Overview Strontium is a silvery metal found naturally as a non-radioactive element. About 99% of the strontium in the human body is concentrated in...

Overview Serrapeptase is a chemical taken from the silkworm. It is a commonly used drug (Takeda Chemical Industries) in Japan and Europe. In the U....

Overview Rosemary is an herb. It is native to the Mediterranean region but is now grown worldwide. The leaf and its oil are used to make medicine. ...