Supplements are best taken on an empty stomach, you can choose to wake up in the morning and bedtime on an empty stomach these two time periods. Taken on an empty stomach, the drug can quickly enter the stomach and intestines, the drug is not mixed with food, not affected by food, so as to maintain a higher concentration, the absorption effect is relatively good. However, it should be noted that, such as the stimulating effect on the digestive tract of Chinese medicine need to be taken after meals. Usually you can take the tonic in the morning before meals, and then again in the evening before bed when the stomach has been emptied, after taking the medicine on an empty stomach before bedtime, the person enters a sleep state, the drug has a sufficient time can be absorbed. If you can’t do it in the morning, before going to bed, it is recommended to put the drug in the meal 2 to 3 hours, at this time the gastrointestinal tract has been basically emptied, this time to take tonic is conducive to the absorption of drugs. Tonic need to choose and take under the guidance of a Chinese medicine practitioner, do not take blindly without authorization, so as not to cause harm to health.