Pre-Flight: Take 4 tablets upon arising. TAKE WITH WATER ON AN EMPTY STOMACH AT LEAST ONE HALF HOUR BEFORE BREAKFAST. If possible, do this for three days prior to departure. Water is important; drink at least 8 glasses per day. During and After Flight: Take 2 tablets for each hour of flight time. Again on an empty stomach. Since our product is a whole food and works nutritionally, we recommend a diet rich in fresh fruits, vegetables, whole grains and low in fats and sugar. Other factors that can affect your body's condition are daily mental and emotional poise, fresh water and air, adequate sleep and regular exercise. Reminder: These tablets are whole foods made from enzyme rich sprouts. Our products work nutritionally and are not stimulants. Any results are nutritional and in no way mean to imply that you should not see a doctor.