Diarrhea After Drinking Alcohol: Causes, Prevention, and Treatment

Disclaimer: This article is for informational and educational purposes only, and does not replace expert medical advice. Diarrhea after drinking alcohol may require a comprehensive physical assessment, so refer to a board-certified physician for a proper diagnosis and treatment. In case of emergencies, call 9-1-1 in the U.S. or your local emergency number immediately.

If you have ever noticed digestive concerns after drinking, you are not alone. For many, alcohol can disrupt the stomach and intestines in ways that feel uncomfortable or unpredictable.

Diarrhea is one of the more common effects of alcohol. It lasts for nearly 1-3 days after drinking alcohol. Small amounts of alcohol can make your digestive system work more rapidly, leading to diarrhea; whereas, larger amounts of alcohol can impede digestion and lead to constipation.

While it can feel frustrating or even embarrassing, it is often your body’s way of responding to how alcohol interacts with your system.

In this article, we will understand why this happens to make sense of what your body is telling you - and what steps you or a loved one can take that might feel right moving forward.

Alcohol directly impacts your gastrointestinal tract (GIT), which can lead to the following reactions:

• Irritate the lining of your stomach and intestines
• Disrupt the balance of bacteria in your gut
• Speed up how quickly food moves through your system
• Reduce your body’s ability to absorb water and nutrients.

Inhibition of digestion and absorption can contribute to diarrhea and reduce the ability to transfer nutrients throughout the body.

This is more common if you consume alcohol on an empty stomach, as food in the stomach can get absorbed alongside alcohol and act as a buffer. But on an empty stomach, alcohol rapidly moves through the intestinal walls.

While most of the alcohol is absorbed in the small intestine, the leftover alcohol reaches the large intestine (colon), where it can cause the muscles to contract frequently, leading to diarrhea.

Alcohol does not impact everyone in the same way - even the digestive system. A few risk factors can increase the likelihood of diarrhea among some more than others:

• Type of Alcohol: Beer and sugary mixed drinks may irritate the gut more, especially among those with gluten sensitivity.
• Underlying Conditions: Certain underlying conditions, like irritable bowel syndrome (IBS), celiac disease, and Crohn’s disease, can increase the likelihood of diarrhea after drinking.
• Stress and Mental Health: Cycles of emotional strain or distress can already impact digestion, which alcohol can amplify.
• Drinking Habits: Drinking on an empty stomach can increase the likelihood of diarrhea.
• Withdrawal Symptoms: In case of heavier drinking patterns, abruptly reducing or stopping alcohol use can lead to unpleasant withdrawal symptoms, including diarrhea.

If alcohol is affecting your digestion or leading to diarrhea, there are a few steps you can consider:

• Be mindful of your drinking patterns, especially if you are consuming alcohol on an empty stomach
• Pay attention to the drinks that trigger your symptoms
• Keep your body hydrated and nourished at all times. Do not neglect regular meals or water.
• Take breaks from alcohol to see how your body responds.

Many of those who experience diarrhea after drinking alcohol are not in a crisis commonly associated with alcoholism - you are managing your daily life, showing up for responsibilities, but there may be patterns that are becoming harder to control:

• You may be wondering why your body is reacting to alcohol way more than it used to
• You have tried cutting back or putting limits, but you have not been able to stick to them
• You have been planning around restroom access when you are out.

These moments do not feel extreme, but they may be worth taking note of.

While occasional stomach upset after drinking may not be anything out of the ordinary, you have to start paying closer attention if it happens frequently.

While most do not struggle with stomach concerns for more than 1-3 days, if you notice other patterns like:

• Increased sensitivity to certain drinks
• Needing to use the restroom soon after drinking
• Loose stools the next morning after alcohol use,

These patterns can indicate ongoing symptoms. They can be subtle at first, but they often become easier to recognize as they occur more frequently.

If you are feeling concerned about someone you care for who experiences diarrhea after drinking alcohol, even your small observations can mean a lot. You can help your loved one in the following ways:

• You can find a time when they are relaxed to bring up the conversation without judgment
• You can focus on what you have noticed. Use “I” statements; do not make any presumptions
• If you are met with denial or resistance, do not get frustrated. Broach the topic at a later time.
• Offer practical tips. Encourage your loved one to explore the care they need and deserve at their own pace.

Your loved one is more likely to open up when they feel understood, not pressured. Even if they do not meet you halfway immediately, take heart in the fact that with every conversation you are making inroads.

Finding the structure and care you need and deserve to break out of patterns concerning alcohol does not mean stepping away from your life. Outpatient care is designed to fit right in with your routine.

NuView Treatment Center offers partial hospitalization programs, intensive outpatient programs, and even virtual care options that meet you where you are, depending on what you need.

If you have been experiencing persistent physical symptoms or simply wondering why your body is reacting to alcohol this way - reaching out to licensed and experienced experts who can provide more clarity on what you are experiencing makes a meaningful difference.

Why does alcohol upset my stomach?

Alcohol upsets the stomach by inflaming the digestive system, hampering water absorption, hastening digestion, and increasing the content of harmful bacteria in the digestive system.

Is diarrhea a symptom of alcohol intolerance?

In some cases, diarrhea after drinking alcohol can also be a symptom of alcohol intolerance.

Does mixing alcohol with prescription medications worsen diarrhea?

Some medications can interact with alcohol and increase the likelihood of digestive side effects like diarrhea.

How long does diarrhea after drinking alcohol last?

Typically, diarrhea and other digestive concerns after drinking alcohol last for 1-3 days.

When must you visit the doctor for diarrhea after drinking?

If diarrhea after drinking alcohol becomes more severe and persistent, or is accompanied by pain, blood, or weight loss, it is best to refer to a doctor immediately.