Caffeine is safe to consume with modafinil, including Modalert 200 and Artvigil 150, however care is suggested. Modafinil and coffee are stimulants that boost alertness, therefore taking them together may cause overstimulation. This combination may produce jitteriness, anxiety, fast pulse, or sleeplessness. If you drink coffee or energy drinks while taking modafinil, watch how your body reacts. If you have side effects, cut down on coffee. Additionally, coffee and modafinil impact the central nervous system differently and interact in ways that are unclear. The combination may help some individuals remain awake, but others may encounter adverse effects. Before Buy modafinil online australia or taking it with caffeine, ask your doctor.