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Why Does Ensure Make You Feel Sick?

4 min read

While Ensure is a popular nutritional supplement, a significant portion of consumers, including as many as 67% in some user-reported data, experience side effects such as nausea and diarrhea. This can lead many to wonder, "Does Ensure make you feel sick?" and what factors are behind their unpleasant reaction.

Quick Summary

Ensure can cause gastrointestinal upset, including nausea and bloating, due to factors like ingredient sensitivities, lactose content, and rapid consumption. Digestive issues often subside with consistent use as the body adjusts, but sensitivities to ingredients like artificial sweeteners can persist. Alternative products or adjusting intake can alleviate discomfort.

Key Points

  • Ingredient Intolerance: Sensitivities to ingredients like lactose, artificial sweeteners, or the concentration of milk protein can cause digestive issues.

  • Lactose Content: While many Ensure products are suitable for lactose intolerance, they are not lactose-free and may cause symptoms in highly sensitive individuals; plant-based options are available.

  • High Sugar and Fat: The high sugar content in some Ensure versions can lead to blood sugar spikes and digestive discomfort, especially when consumed rapidly.

  • Consumption Method: Drinking Ensure too quickly or on an empty stomach can overwhelm the digestive system, leading to nausea and stomach cramps.

  • Underlying Health Conditions: Pre-existing conditions like IBS, gastritis, or medication side effects can increase the risk of feeling unwell after consuming Ensure.

  • Adjusting Intake: To minimize sickness, try consuming Ensure slowly, with a small snack, or start with a reduced serving size.

  • Explore Alternatives: If sensitivity is the issue, consider switching to a plant-based or lower-sugar Ensure formula.

In This Article

Common Reasons Ensure Can Cause Sickness

Feeling sick after consuming a nutritional supplement like Ensure can be surprising, but it is a relatively common experience for some individuals. The discomfort is rarely a sign of serious harm but is usually tied to specific ingredients or the way the product is consumed. Understanding these factors is the first step toward preventing future stomach upset.

Ingredient Sensitivities and Intolerances

One of the most frequent culprits behind digestive issues is a sensitivity or intolerance to one or more of Ensure's ingredients.

  • Lactose Intolerance: While most Ensure products are described as suitable for lactose intolerance, they are not completely lactose-free. The small amount of lactose may be enough to cause symptoms like gas, bloating, and diarrhea, especially for those with a high degree of sensitivity. Lactose-free versions, like Ensure Plant-Based Protein, are available for individuals with this concern.
  • Artificial Sweeteners: Some formulations of Ensure contain artificial sweeteners such as sucralose and acesulfame-potassium. These additives can cause digestive upset in sensitive individuals, leading to gas and bloating. The specific type and amount of sweetener can affect how your body reacts.
  • Dietary Fiber: The addition of fiber in some Ensure products, particularly those promoting digestive health, can cause gas and bloating as the body adjusts. A sudden increase in dietary fiber can overwhelm the digestive system, so it is often recommended to start with a smaller quantity.
  • Milk Protein Concentrate: All Ensure products (except the plant-based version) contain milk protein. For those with a true milk protein allergy, this can cause a more severe allergic reaction, not just a simple intolerance. It is important to distinguish between an intolerance and an allergy, with a healthcare provider, to ensure safety.

High Sugar Content

Some varieties of Ensure contain a high amount of sugar, which can contribute to digestive issues and overall unwellness. A rapid influx of sugar can cause blood sugar levels to spike and then crash, leading to feelings of anxiety, jitters, and a general feeling of being unwell. For individuals with diabetes, this sugar content can be particularly problematic. The added sugar can also disrupt the balance of gut bacteria, which can trigger gas, bloating, and diarrhea.

Speed and Quantity of Consumption

How you drink Ensure can also play a major role in how your body responds.

  • Drinking Too Fast: Consuming a large amount of a high-calorie, nutrient-dense liquid in a short period can overwhelm the digestive system. This can lead to nausea and stomach cramps as your body works overtime to process it.
  • Drinking on an Empty Stomach: For some, drinking a supplement like Ensure on an empty stomach can be a shock to the system, causing nausea or a feeling of heaviness. Eating a small amount of solid food beforehand can help prepare the digestive tract.

Other Factors Influencing Nausea

Beyond the product itself, personal health and habits can affect your experience.

  • Underlying Conditions: Conditions such as Irritable Bowel Syndrome (IBS), gastritis, or simply a sensitive stomach can make a person more susceptible to digestive upset from any supplement.
  • Medication Interactions: Some medications, including certain antibiotics or pain relievers, can cause nausea or interact with nutrients in Ensure, increasing the likelihood of stomach issues.

Comparison of Ensure Products and Alternatives

Different Ensure products have varying formulas, and knowing the differences can help identify a more suitable option. If you experience negative side effects, consider a plant-based or lower-sugar alternative.

Feature Ensure Original Ensure High Protein Ensure Plant-Based Protein
Lactose Contains some, generally suitable for intolerance Contains some, generally suitable for intolerance Lactose-Free
Protein Source Milk protein concentrate, soy protein isolate Milk protein concentrate, soy protein isolate Fava bean and pea protein
Sweeteners Sugar, corn syrup Sugar, artificial sweeteners No artificial sweeteners
Digestive Sensitivity Moderate, due to lactose and sugar Moderate, due to lactose, sugar, and sweeteners Lowest - ideal for sensitive systems

How to Minimize Sickness from Ensure

If you find that Ensure makes you feel sick, several strategies can help you manage or prevent the issue altogether:

  1. Consume Slowly: Sip the shake over a longer period, rather than drinking it all at once.
  2. Take with Food: Pair Ensure with a small snack or a meal to help your digestive system handle the influx of nutrients.
  3. Reduce Serving Size: Start with a smaller amount, such as half a bottle, to allow your body to adjust before increasing the serving.
  4. Try a Different Formula: Switch to a product with less sugar or a different protein source, such as the Ensure Plant-Based Protein, to see if an ingredient is the problem.
  5. Stay Hydrated: Drink plenty of water throughout the day, as dehydration can exacerbate feelings of nausea.

For a deeper dive into how your diet affects overall health, explore nutritional information from a trusted source like the National Institutes of Health. NIH National Library of Medicine: Nutrient Recommendations

Conclusion

Feeling sick after drinking Ensure is a common, though unpleasant, experience often caused by ingredients like lactose, artificial sweeteners, or high sugar content, as well as the speed of consumption. The good news is that most discomfort can be resolved by adjusting how and which type of Ensure you consume. By being mindful of ingredient sensitivities, experimenting with consumption methods, and considering alternative formulations, you can find a way to incorporate nutritional supplements without feeling unwell. If symptoms persist or worsen, consulting a healthcare professional is recommended to rule out any underlying medical conditions.

Frequently Asked Questions

Yes, Ensure can cause bloating and gas. This is often due to ingredients like milk protein or added fibers, which can take time for your digestive system to adjust to, especially when consuming a larger portion. Individuals with lactose or sweetener sensitivities may also experience more gas and bloating.

To quickly relieve nausea, try sipping on clear fluids like water or ginger tea, which can soothe the stomach. Resting in a seated or comfortable position and avoiding strong odors can also help calm your stomach.

Yes, Ensure offers a plant-based protein formula that is lactose-free. While many standard Ensure products are suitable for most people with lactose intolerance due to low lactose content, the plant-based version is the best option for those with high sensitivity.

Some Ensure products, like Ensure High Protein, use artificial sweeteners such as sucralose to reduce sugar content. If you are sensitive to artificial sweeteners, it is important to check the product label and consider an alternative.

Drinking a nutrient-dense supplement like Ensure on an empty stomach can sometimes trigger nausea or cramps because your digestive system is not prepared for such a concentrated influx of calories and nutrients. Eating a small snack beforehand can help mitigate this effect.

Yes, mixing Ensure with other foods or consuming it alongside a small meal can help prevent stomach upset. This slows down the digestion process and makes it easier for your body to handle the supplement.

If you consistently feel sick from Ensure, it's a good idea to temporarily stop and evaluate the cause. Trying a different formula, reducing your serving size, or consulting a healthcare professional can help you find a solution. Do not continue if it causes persistent or severe discomfort.

References

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Medical Disclaimer

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