Tiredness after taking gastrointestinal tablets may be caused by allergies, colds and other reasons, and may also be caused by acute tonsillitis. 1. Allergy: the main ingredients of the tablets are ginseng, yam, hawthorn, fried malt, and pericarp, etc., and patients who are allergic to these ingredients are prone to fatigue after taking the tablets, and in more serious cases, anaphylactic shock may be caused. 2. Colds: after a cold, the virus invades the human body, invades from the respiratory tract to the bloodstream and distributes all over the body along with the bloodstream, and reproduces in a large number of tissue cells all over the body, and the symptom of fatigue after taking tablets for appetite-enhancing and eliminating food may occur. 3. Acute tonsillitis: taking gastrointestinal tablets after the weakness may be acute tonsillitis caused by tonsillitis, tonsil inflammation is more serious will lead to the tonsils are too swollen, thus blocking the airway leading to the body lack of oxygen, fatigue. After the appearance of the above phenomenon should go to the hospital in time for consultation, and follow the doctor’s instructions for treatment, so as not to delay the condition.