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1 Why tongkat ali is the ultimate intelligence-enhancing medication

2 Tongkat ali studied as cancer treatment

3 Tongkat ali and weight loss

4 Tongkat ali also for women

5 Tongkat ali purchase rules

6 The older you are, the more you benefit from marijuana

7 Our self in the midbrain

8 Yohimbe and other sexual enhancement medications

9 Does yohimbe increase penis size?

10 Review of yohimbe products


1 N. Erasmus, M. C. Solomon, K. A. Fortuin andR. R. Henkel, Effect of Eurycoma longifolia Jack (Tongkat ali) extract on human spermatozoa in vitro, Andrologia Volume 44, Issue 5, pages 308-314, October 2012

2 Catherine Ulbricht, An Evidence-Based Systematic Review of Tongkat Ali (Eurycoma longifolia) by the Natural Standard Research Collaboration, Journal of Dietary Supplements, March 2013, Vol. 10, No. 1 , Pages 54-83

3 H.H. Ang, T.H. Ngai, T.H. Tan, Effects of Eurycoma longifolia Jack on sexual qualities in middle aged male rats, Science Direct, Phytomedicine, Volume 10, Issues 6-7, 2003, Pages 590-593.