When the Original ZMA first came out in the early 90s it worked and worked well because Victor Conte (the inventor) was lacing it with….”less than kosher” ingredients….
I take it as part of my tribulis stack (it has trib, tongkat and ZMA in the one formula). It surely cant hurt to take it. Depends on how much $$$ you’re willing to spend on your supplements.
I get each bottle for $7.99 so its worth it for me esp when dieting.