Skip to content

What to do if you ate dairy and you're lactose intolerant?

4 min read

According to studies, approximately 68% of the world's population has some degree of lactose malabsorption. If you have accidentally consumed dairy and you're lactose intolerant, knowing how to manage the uncomfortable symptoms is crucial for quick relief and recovery.

Quick Summary

Get immediate relief from lactose intolerance symptoms after accidentally consuming dairy. Learn effective home remedies, over-the-counter options, and long-term strategies to manage discomfort and prevent future issues.

Key Points

  • Immediate Lactase Dose: Take a lactase enzyme supplement as soon as possible after realizing you've consumed dairy to help your body break down the lactose.

  • Soothe Symptoms: Use OTC medications like gas relievers for bloating and anti-diarrheals for digestive upset. Gentle movement, herbal tea, or a heating pad can also provide comfort.

  • Stay Hydrated: Drink plenty of water or electrolyte-replenishing fluids, especially if experiencing diarrhea, to prevent dehydration.

  • Differentiate from Allergy: Understand that lactose intolerance is a digestive issue, not an immune reaction like a dairy allergy. Severe symptoms require immediate medical attention.

  • Read Labels and Adapt: Develop the habit of checking food labels for hidden dairy ingredients and communicate your needs when dining out to prevent future mishaps.

In This Article

Understanding the Symptoms

Lactose intolerance is the inability to fully digest lactose, the sugar in milk and dairy products, due to a deficiency of the lactase enzyme. When undigested lactose reaches the colon, it ferments and can cause a range of unpleasant gastrointestinal symptoms. These typically begin between 30 minutes and two hours after eating dairy and can include:

  • Bloating
  • Abdominal cramps or pain
  • Gas (flatulence)
  • Diarrhea
  • Nausea
  • Loud, gurgling stomach sounds (borborygmi)

It is important to differentiate these symptoms from a dairy allergy, which involves an immune system response and can cause more severe, potentially life-threatening reactions like hives, swelling, or breathing difficulties. If you experience any severe allergic symptoms, seek immediate medical attention.

Immediate Actions for Relief

When you realize you have consumed dairy, these steps can help mitigate the immediate effects and provide some comfort while the lactose passes through your system, which can take up to 48 hours.

Consider Taking Lactase Enzyme Supplements

If you have a lactase enzyme supplement (like Lactaid) on hand, taking it immediately can help your body break down the lactose you just consumed. For the best results, these supplements are usually most effective when taken right before or during a meal containing dairy. However, some people find they can still offer some benefit if taken soon after. They are not a magic cure-all and may not work perfectly for everyone, especially if a large amount of dairy was eaten.

Try Over-the-Counter Medications

For specific symptoms, certain over-the-counter (OTC) medications can provide targeted relief:

  • For Gas and Bloating: Medications containing simethicone (e.g., Gas-X) can help break down trapped gas bubbles, providing relief from bloating and pressure.
  • For Diarrhea: Anti-diarrheal medications (e.g., Imodium, loperamide) can help manage and reduce bouts of diarrhea.

Drink Plenty of Fluids

Diarrhea can lead to dehydration, so it is crucial to rehydrate. Drinking water or an electrolyte-replenishing drink can help replace lost fluids and minerals. Avoid carbonated or sugary drinks, which can worsen bloating and discomfort.

Use Natural Soothing Remedies

Sometimes, simple, natural approaches can provide significant comfort:

  • Apply a Heating Pad: Placing a heating pad on your abdomen can relax stomach muscles and soothe cramps.
  • Sip Herbal Tea: Certain teas, like peppermint, ginger, and chamomile, are known for their ability to calm an upset stomach and ease gas.
  • Gentle Movement: A short, gentle walk can help move trapped gas through your digestive system. Gentle stretching or restorative yoga poses like Child’s Pose can also help release pressure.

Long-Term Strategies to Avoid Accidents

Prevention is the best cure. Building habits to avoid accidental dairy consumption is key to managing lactose intolerance effectively.

Become a Label-Reading Expert

Dairy can be a hidden ingredient in many processed foods. Beyond obvious culprits like milk and cheese, look for ingredients such as:

  • Whey or casein
  • Milk solids
  • Butterfat
  • Lactose monohydrate

Inform Your Servers

When dining out, always inform your server about your lactose intolerance. Don't be afraid to ask detailed questions about how a dish is prepared and if dairy ingredients can be omitted. Some restaurants have allergen menus or are more accommodating than others.

Manage Your Diet Strategically

Many people with lactose intolerance can tolerate small amounts of dairy. Experimenting to find your personal threshold is helpful, but do so carefully. You may find you tolerate some products better than others:

  • Hard, Aged Cheeses: Cheddar, Parmesan, and Swiss cheeses are naturally lower in lactose and often cause fewer issues.
  • Yogurt with Live Cultures: The bacteria in yogurt help break down the lactose, making it easier to digest for some individuals.
  • Lactose-Free Products: Most supermarkets carry a wide variety of lactose-free milks, cheeses, and yogurts that have had the lactase enzyme added during processing.

Lactose Intolerance vs. Dairy Allergy: A Comparison

Feature Lactose Intolerance Dairy Allergy
Cause Deficiency of the enzyme lactase, leading to inability to digest lactose (milk sugar). Immune system reaction to milk proteins (casein or whey).
Mechanism Digestive issue. Undigested lactose ferments in the colon, causing gastrointestinal symptoms. Immune response. The body releases histamines and other chemicals, causing allergic symptoms.
Symptoms Primarily gastrointestinal: bloating, gas, cramps, diarrhea, nausea. Can be mild to severe and affect multiple systems: hives, skin rash, swelling, wheezing, throat tightness, breathing issues, anaphylaxis.
Onset 30 minutes to 2 hours after consuming dairy. Often occurs very quickly, within minutes, but can sometimes be delayed.
Severity Uncomfortable but generally not life-threatening. Can be life-threatening, particularly in cases of anaphylaxis.
Treatment Managing symptoms with OTC remedies, lactase supplements, and limiting dairy intake. Strict avoidance of all dairy products; may require an EpiPen for severe reactions.

The Role of Probiotics

Some research suggests that probiotics, particularly certain strains of Lactobacillus and Bifidobacterium, may assist in the breakdown of lactose in the gut and potentially help reduce some symptoms. However, the evidence is still inconclusive, and results vary depending on the specific strain and individual. Fermented foods like some yogurts, kefir, and sauerkraut contain these beneficial bacteria. It may be worth consulting a dietitian or doctor to see if a probiotic supplement is right for you, especially if you plan to rely on it for symptom management.

Conclusion

Accidentally consuming dairy when you are lactose intolerant can be a painful and uncomfortable experience, but it is not a medical emergency unless severe allergic symptoms are present. The immediate steps involve taking a lactase enzyme supplement if possible, treating specific symptoms with OTC medications like gas relievers or anti-diarrheals, and using natural remedies to soothe discomfort. Longer-term management focuses on careful label reading, being proactive when eating out, and discovering your personal tolerance for different dairy products. For long-term dietary health, it is essential to find alternative sources of calcium and vitamin D if you significantly reduce dairy intake. With a little foresight and preparation, you can effectively manage accidental dairy exposure and minimize your discomfort. For further reading, consult the reliable information available on the Mayo Clinic website.

Frequently Asked Questions

Symptoms of lactose intolerance usually begin 30 minutes to two hours after consuming dairy and can last for up to 48 hours, depending on the amount consumed and your individual tolerance level.

Yes, while lactase enzymes are most effective when taken just before or with the first bite of a dairy-containing meal, they may still offer some relief if taken shortly after, especially for mild cases.

Over-the-counter products containing simethicone can quickly help break up gas bubbles. Additionally, gentle movement, abdominal massage, and herbal teas like peppermint or ginger can help.

Many people with lactose intolerance can tolerate yogurt with live active cultures, as the bacteria help break down the lactose. However, tolerance varies, and it is best to test small amounts to see how your body reacts.

Yes, OTC anti-diarrheal medications, such as loperamide (Imodium), are generally safe for managing acute diarrhea caused by lactose intolerance. Always follow the dosage instructions and consult a doctor if symptoms are chronic or severe.

If you reduce your dairy intake, you can get calcium from non-dairy sources like leafy greens (kale, broccoli), fortified plant-based milks and juices, fortified cereals, and canned fish with bones like salmon or sardines.

While lactose intolerance is not typically dangerous, you should see a doctor if symptoms are severe, include blood in your stool, last longer than a few days, or if you suspect a dairy allergy due to symptoms like hives or difficulty breathing.

References

  1. 1
  2. 2
  3. 3
  4. 4

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.