advanced molecular labs preworkout, watermelon flavor, 520 grams - with 8g citrulline malate, 5g creatine and 2.5g betaine - with two free sample packs (samples may vary) advanced molecular labs stronger, faster, further we are all looking for an edge in our training. that is why advanced molecular labs has created the most advanced scientifically based product ever developed, based on the latest cutting-edge performance nutrition, research, ingredients and dosages that will completely prepare you for your next workout. aml preworkout contains a unique synergistic blend of scientifically researched compounds that will pack your muscle cells with energy and increase strength, power and endurance so you can push your body to the limit for longer periods of time. in addition, it activates the perfect blend of neurotransmitters to boost your mood, motivation, mental alertness and focus so that you get into the gym and start training with the utmost intensity and resilience!