We all know that caffeine is the undisputed king of pre workout stimulants. It boosts energy, motivation, and focus, and it’s also been shown to improve performance as well as fat loss.
That’s why caffeine is the foundation of the best pre workout supplements.
However, the best hardcore pre workouts include other stimulants to amplify the energy and motivation-boosting powers of caffeine.
One such stimulant is a relative of a common fat loss ingredient -- isopropylnorsynephrine.
What is Isopropylnorsynephrine?
Isopropylnorsynephrine is a modified version of synephrine -- the primary active alkaloid found in citrus aurantium.
Synephrine is a beta-3 adrenergic receptor agonist which stimulates lipolysis -- the break down of lipids (fats) and triglycerides into free fatty acids and glycerol, which can then be burned by the body for energy.
But, that’s not all, synephrine is structurally similar to ephedrine and increases energy, mood, and focus. Synephrine has also been shown to improve energy expenditure as well as athletic performance both on its own and in combination with caffeine!
Now, here’s the kicker -- isopropylnorsynephrine has been found to be more potent than synephrine, which means more energy, more focus, and more fat burning!
Where Can I Find Isopropylnorsynephrine?
Killer Labz Executioner contains a potent 30mg isopropylnorsynephrine alongside 400mg of caffeine anhydrous and 250mg of eria jarensis extract. This is on top of a synergistic combination of nootropics (and an additional 100mg of Infinergy di-caffeine malate for long, sustained energy and focus!).
Collectively, this powerhouse combination of energizers and focus enhancers makes Executioner the go-to hardcore pre workout for anyone seeking intense, unrelenting energy and focus to kill their workouts!
- Mercader J, Wanecq E, Chen J, Carpéné C. Isopropylnorsynephrine is a stronger lipolytic agent in human adipocytes than synephrine and other amines present in Citrus aurantium. J Physiol Biochem. 2011 Sep;67(3):443-52. doi: 10.1007/s13105-011-0078-2. Epub 2011 Feb 19. PMID: 21336650.