What is mitragynine? It's the primary active alkaloid found in kratom leaves, and it's the compound responsible for kratom's well-known energizing and mood-lifting properties. Mitragynine works naturally with your body's receptors to support focus, motivation, and a steady sense of well-being — without the jittery feeling you get from artificial stimulants. Jubi's kratom shots and stick packs are dosed with precision so you get just the right amount of mitragynine to feel your best. Lab tested, clean, and consistent every single time. Drink Jubi and let mitragynine do what it does best — naturally.