Tribulus Side Effects
Tribulus has been used for quite a long
time, and no studies have found any adverse side effects
of Tribulus. Again, one of the major benefits of Tribulus
is that it's not a hormone and only helps increase testosterone
by increasing the level of Luteinizing Hormones (LH). The
only adverse side effect experienced is an upset stomach,
which can be helped if taken with food.
There are a large number of studies that provide contradicting results on the effectiveness of tribulus. Various studies on rats have demonstrated that tribulus increased testosterone and sexual activity 1, 2 , while other studies found that tribulus had no effect on muscle strength, body composition, exercise performance in human subjects 3, 4. Obviously, taking these studies at face value, the studies involving human subjects would obviously carry more weight compared to the studies involving rats and other animals.
However, from personal experience, and based on user reviews of various tribulus based supplements, I would have to say that tribulus works, but not for everyone. Enough users have submitted postive reviews to show that tribulus based supplements do work. I can say from my past experiences that each time I've take a tribulus supplement, I've noticed a difference - these include increased acne breakouts, and increased libido etc...
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1. The hormonal effects of Tribulus terrestris and its role in the management of male erectile dysfunction - an evaluation using primates, rabbit and rat.
Gauthaman K, Ganesan AP.
Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Lower Kent Ridge Road, 119074 Singapore.
2. Aphrodisiac properties of Tribulus Terrestris extract (Protodioscin) in normal and castrated rats.
Gauthaman K, Adaikan PG, Prasad RN.
Department of Obstetrics and Gynaecology, National University Hospital, National University of Singapore, Singapore 119704, Singapore.
3. The effect of five weeks of Tribulus terrestris supplementation on muscle strength and body composition during preseason training in elite rugby league players.
Rogerson S, Riches CJ, Jennings C, Weatherby RP, Meir RA, Marshall-Gradisnik SM.
School of Exercise Science and Sport Management, Southern Cross University Lismore, New South Wales, Australia.
4. The effects of Tribulus terrestris on body composition and exercise performance in resistance-trained males.Antonio J, Uelmen J, Rodriguez R, Earnest C.
Human Performance Laboratory, University of Nebraska, Kearney, NE 68849-3101, USA.