You can drink alcohol after taking montelukast, but it is generally recommended not to drink alcohol so as not to affect the efficacy. Montelukast has the effect of inhibiting the growth of viruses and bacteria in the digestive tract and adsorbing toxins, and can form a protective layer on the surface of the digestive tract mucosa to protect the intestinal mucosa, while also regulating intestinal flora, and is mainly used for the treatment of acute and chronic diarrhea in adults and children in clinical practice. Montelukast can drink alcohol after taking, but due to taking montelukast basically are diarrhea patients, and alcohol on the gastrointestinal tract has a certain degree of irritation, may aggravate the symptoms of diarrhea, and alcohol may also affect the montelukast to play the efficacy of the drug, is not conducive to the recovery of diarrhea. Therefore, it is generally recommended not to drink alcohol after taking Montelukast. A few people may experience mild constipation after taking Montelukast, and should seek medical advice if there are obvious adverse reactions. When taking Montelukast, you should consult your doctor in advance and take the medication strictly according to the doctor’s instructions, not self-medication, so as not to delay or even aggravate the condition.