The source is a series of comments from a YouTube video about Shilajit, a black substance found in the Himalayas that is marketed as a natural viagra. The comments range from those who believe in its effectiveness and discuss its use to those who are skeptical of its claims and express concern about its safety and origins. Some commenters even question the authenticity of the product and the ethics of its production. The video highlights the cultural and scientific complexities surrounding Shilajit and the conflicting viewpoints it elicits.

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