Bulbine Natalensis and Testosterone: Toxicity is a Problem


The testosterone complement trade has been booming for the previous years, regularly developing with new potential herbals to lift pure check manufacturing.

Bulbine natalensis is considered one of them that was briefly hailed as the perfect of all of them and then nearly fully forgotten simply months later. In this text we’ll undergo all of the analysis and actual proof behind bulbine supplementation, and whether or not it actually raises testosterone ranges.

We additionally have a look at why bulbine natalensis got here considerably of a supplemental non-starter and why you would possibly wish to be cautious with its use.

Bulbine and Testosterone

bulbine natalensis for testosterone boosting purposesThe bulbine natalensis plant grows primarily in Africa, the next lively substances have been recognized from the herb1;

  • steroidal saponins
  • tannins and glycosides
  • alkaloids and anthraquinones

At its nation of origin, the first use of bulbine is for anti-diabetic and anti-fibrotic advantages, in addition to some beauty purposes in type of lotions and soaps.

When it involves its purpoted testosterone boosting advantages, the primary proof got here from the African Yakubu et al. who’re the identical group of researchers that published the first evidence about another popular African “T-booster” called Fadogia agrestis.

If you’re accustomed to the story of Fadogia, you already know that it was first hailed as a potent testosterone elevating natural complement, however later confirmed toxicity within the testis, liver, and kidneys. The story of bulbine natalensis is sadly fairly related.

The first proof of bulbine natalensis was revealed in 2008 on the International Journal of Andrology by Yakubu et al1. the place the researchers state that “bulbine natalensis could be used in the management of disorders of desire/libido, premature ejaculation and erectile dysfunction in males.”

In their examine, Yakubu et al. administered three totally different dosages (25mg/kg, 50mg/kg, and 100mg/kg) of water-extracted bulbine natalensis to male wistar rats for 14-days (in addition they had management group, and for some unusual motive a group of rodents receiving 50mg/kg Viagra).

What they discovered was that throughout the 2-week examine interval, testosterone (serum and testicular) and LH ranges elevated considerably. The 50mg/kg group famous greatest enhancements, adopted by the 25mg/kg group. Strangely the group of rats receiving the very best dosage noticed no vital adjustments in testosterone.

bulbine natalensis testosterone study

In 2009 Yakubu et al. revealed one other examine of bulbine natalensis in rodents utilizing the identical dosages2. They discovered that 50mg/kg was once more the “optimal” dosage, growing testosterone ranges by a staggering 346% relative to manage, whereas the 100mg/kg resulted in lowered testosterone ranges.

At this level two rodent research had confirmed large enhancements in each testosterone and LH ranges, with accompanied enhancements in testicular weight, mounting frequency, erection high quality, and even ejaculation latency. No marvel the complement trade was raving, however there was extra to return.

In rodents, dosages of 25, 50, and 100mg/kg have all resulted in elevated liver enzymes and histological adjustments to liver tissue, accompanied by related antagonistic results within the kidneys3. These results point out toxicity and may present clarification as to why the very best dosage of 100mg/kg was seen to decrease testosterone ranges regardless that the 25 and 50mg/kg dosages raised check manufacturing.

In healthy people, will increase in liver enzymes have been famous with the bulbine natalensis complement ProLensis™, suggesting that the unfavourable results on liver health aren’t restricted to rodents. Although the researchers declare that this is not “clincally relevant”, it’s good to keep in mind that this is in reality a complement firm sponsored examine on already established model4.

Conclusion on Bulbine Natalensis

Similarly to Fadogia agrestis, bulbine reveals very spectacular ends in rodent research, however then additionally reveals some toxicity within the liver and kidneys.

If it wasn’t for the obvious toxicity, I’d say that bulbine dietary supplements look actually fascinating, however even when the 346% improve in testosterone would happen in people (which has not been studied), the chance of unwanted side effects (that are much like these seen in oral steroids), would nonetheless make the use questionable.

If nonetheless, you resolve to provide bulbine natalensis a strive, consider getting the pure extract from Barlowe’s (affiliate link), simply keep in mind to observe your liver enzymes throughout the use.



Yakubu M, Afolayan A. Effect of aqueous extract of Bulbine natalensis (Baker) stem on the sexual behaviour of male rats. Int J Androl. 2009;32(6):629-636. [PubMed]


Yakubu M, Afolayan A. Reproductive toxicologic evaluations of Bulbine natalensis Baker stem extract in albino rats. Theriogenology. 2009;72(3):322-332. [PubMed]


Afolayan A, Yakubu M. Effect of Bulbine natalensis Baker stem extract on the practical indices and histology of the liver and kidney of male Wistar rats. J Med Food. 2009;12(4):814-820. [PubMed]


Hofheins J, Habowski S, Ziegenfuss T, Lopez H. Short time period security of bulbine natalensis supplementation in healthy males. J Int Soc Sports Nutr. 2012;9(Suppl 1):P33. [PMC]

Bulbine Natalensis and Testosterone: May Raise T-Levels however has Similar Toxicity Side Effects as Many Oral PEDs was final modified: January 25th, 2018 by Ali Kuoppala

Ali Kuoppala

Ali Kuoppala is the founding father of Anabolic Men, and an Independent Researcher that has been credited with organizing the findings which have helped 1000’s of males attain hormonal stability.

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