While USPLabs has strongly defended the safety, efficacy and legal status of DMAA - the star ingredient in top-selling pre-workout supplement Jack3d - it has been working on a new variant called Jack3d Micro that excludes the controversial stimulant.
The ingredients in Jack3d Micro (”micro-engineered pre-workout technology”), which is not yet on sale but scheduled for a summer launch, remain a closely guarded secret.
However, the marketing blurb on USPLabs' website indicates that DMAA, creatine and beta-alanine are not in the new formula:
“Creatine, Beta-Alanine and DMAA are great but not right for every situation. After 18+ months in research and development, we finally have something worthy of the Jack3d name!
“While the ‘feeling’ is different (no itchy head tingles and smooth, long lasting energy) you’ll be thrilled as you destroy workout after workout with a pump and performance sent from the heavens!”
It adds: “We can promise your training is about to hit an entire new level…”
We beta test every product before release
Selected USPlabs Inner Circle members have been invited to try the new product, which is in the beta testing phase, says the Texas-based firm:
“We beta test every product before releasing to ensure real world product performance. We expect 100% honesty - The good, the bad & the ugly...let us know!”
How effective will new formula be vs the old one?
Jack3d Micro, which already boasts its own facebook page, is generating a lot of interest in the body-building community, with discussions focused on the ingredients list and how effective it will be compared with the original formula.
Asked when the product would be available, a spokeswoman for USPLabs told NutraIngredients-USA: "The short answer is soon - hopefully very soon, at which time we will release the ingredients list."
Click here to read the latest on the debate about the source and regulatory status of DMAA.