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Here's what the renowned US Massachussets Institute of Technology (MIT) in its description of a research program for the quantitative measurement of the chemical or bioactive constituents of Eurycoma Longifolia said:
"The yield of the bioactive constituents is extremely low at less than %. Hence, they are not easily available for further studies and for commercial preparations. The plant also requires a longer time to produce the secondary bioactive metabolites and their biological activities may be derived from more than one of the constituents."
Two important points here to take note.
One, the bioactive ingredients of Eurycoma Longifolia is extremely low as stated by the researchers of MIT.
Next, the second part of MIT's statement: "The plant also requires a longer time to produce the secondary bioactive metabolites." This means only old roots of the herb have an effect. How old? Traditionally, only roots older than 10 years old are used by men to boost their sexual vitality.
The roots we're using to manufacture SD-200 are wild crafted from the natural rainforest of Sumatra, Indonesia. And only in Indonesia can this exotic herb still be found in its wild, natural habitat. In other words, it is also the only place in the world where old Tonkat Ali can be harvested.
In the production of SD-200, only roots that are 10 years or more are used.
And being aware that the bioactive ingredient of Tongkat Ali Extract is extremely low, the extract strength we use to produce SD-200 is the strongest in the market at 1:200. This means 200 gram of aged roots are used to produced 1 gram of extract.