If the tingles are the reason you stopped taking pre-workout, this is the shelf for you. Beta-Alanine causes that pins-and-needles feeling, and none of these three contain it. Red Dot is a full pump and focus formula with zero caffeine. Pump Action is a stim-free capsule. SEND IT Sport is the endurance option and does carry caffeine, around 145 mg, so check that before you take it late. Every panel is printed on the label, so you can verify all of this yourself. Every one of these uses pure L-Citrulline, never citrulline malate. The common 2:1 malate blend is two parts citrulline to one part malic acid, so a 9 g scoop of it is really about 6 g of citrulline. When our label says 9,000 mg, you get 9,000 mg.