These are supplements that have been shown to increase testosterone levels in the body. Unlike the Testosterone Booster category page, which is more comprehensive, this page excludes supplements that have been shown to be ineffective.
However, we will include supplements that have been shown to increase testosterone in laboratory animals but do not have human trials looking at testosterone. These are uncertain compounds.
Some compounds that have been shown to increase testosterone in rats, but no accurate human dose can be estimated, have been excluded.
200mg DHEA is near the upper limit of what is used to boost testosterone. DHEA is very well studied, and appears to boost testosterone most of the time in persons older than 40 years of age.
Usage of 200mg DHEA in youth (18-25, for the most part) is much more hit or miss. It has been noted in some studies, but some studies also come back null. The DHEA pool always rises (indicating absorption), just sometimes this does not translate into higher testosterone levels for unknown reasons.
It does boost testosterone in women as well, but estrogen too. Minimal to no side-effects regarding androgenicity (man-like side effects) are seen with the average dose of 50mg in women, which is what many fat burning and anti-aging supplements contain.
Females may also use the derivative compoun called 7-Keto (or 7-Oxo), which is a metabolite of DHEA that cannot turn into either estrogen or androgens.
One human study noted D-Aspartic Acid increasing testosterone in man at 3g Sodium-D-Aspartate taken after a meal.
3000 IU in otherwise normal men (those with less than the 'ideal' serum level of Vitamin D) saw an increase in testosterone. Not instantly, but when vitamin D levels normalized.
This isn't so much a 'spiking' of testosterone levels, but a restoration of suppressed testosterone levels from a Vitamin D deficiency.
Similar to Vitamin D, Zinc is able to preserve or increase testosterone when you would be in a zinc deficiency. Zinc deficiencies are more prevalent in vegetarians and vegans, and can be induced with excessive sweating from exercise and subpar dietary intake.
Zinc has not been shown to increase testosterone further than resting levels when taken above a normal diet, and 50mg is a rather high dose but one commonly used.
There are no human studies on the subject matter, so doses need to be extrapolated from rats. Odd research compound, as it has been shown to increase testosterone in rats in multiple studies with high reproducibility yet no studies in humans.
10g is merely an estimate, dosages may fluctuate around this number.
The results appear to be dose-dependent, and also appear to be subject to negative feedback. If using very high doses of ginger, it would be a good idea to cycle it.
Fenugreek has been shown to increase testosterone in healthy males, but the mechanism is not known. Additionally, Fenugreek has been demonstrated to reduce DHT despite increasing testosterone; this means that fenugreek is both a testosterone booster (by technicality) and possible anti-androgen. As such, the testosterone 'boost' from Fenugreek may not confer much help to building muscle, Read more here
The 500mg used was with TestoFen, a patented blend that has a much higher steroidal saponin content than basic Fenugreek. If not using TestoFen, higher doses would need to be used.
This supplement appears to reliably increase testosterone in animals, but is also associated with adverse effects in renal tubules and the liver. There is not enough evidence at this moment in time to do a proper cost-benefit analysis on whether to use it or not, but it does appear to increase testosterone.
It would be prudent to avoid supplementation of Bulbine Natalensis if currently not in the peak of health, or otherwise being cautious.
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