Tribulus terrestris is a plant that grows in tropical climates. The part of the
plant from which there is the most interest lies in the root. This plant has been
used around the world for a variety of ailments. It has been used as a diuretic,
antiseptic, anti-inflammatory, and as a mood enhancing tonic.
The most noted effect of tribulus terrestris is it's use in treating sexual
deficiencies. It has been used in Asia and Bulgaria for years to treat libido
and infertility problems. Tribulus terrestris is a non-hormonal herb that restores
and improves libido in men as well as improving and prolonging (no pun intended) the
duration of erections. Tribulus terrestris increases the number of sperm and the
mobility of them.
The reasons for all of this are that somehow tribulus terrestris increases testosterone
levels by increasing luteininzing hormone (LH) levels. LH is the hormone that
signals the body to start making natural testosterone. There is a study involving
individuals taking 750 mg per day of tribulus terrestris. It showed that LH
increased from 14.38 ml/U/ml to 24.75 ml/U/ml (which is a 72% increase in LH). Free
testosterone went from 60 ng/dl to 84.5 ng/dl (which is an increase of 41%). These
increases in testosterone are why bodybuilders have interest in using this
supplement. They have been experiencing increases in muscle size, stamina, and
strength.