Skip to content

What is the side effect of baking soda on the body?

4 min read

A retrospective review of cases reported to the California Poison Control System found that misuse of baking soda as an antacid accounted for over 60% of incidents. So, what is the side effect of baking soda on the body when used improperly?

Quick Summary

Ingesting baking soda (sodium bicarbonate) carries significant risks. Overuse can cause electrolyte imbalances, high blood pressure, and metabolic alkalosis, with severe cases leading to seizures or cardiac events.

Key Points

  • High Sodium Content: Baking soda is high in sodium, which can increase blood pressure and strain the heart and kidneys.

  • Metabolic Alkalosis: Overuse can disrupt the body's natural pH, leading to a dangerous condition called metabolic alkalosis with symptoms like muscle spasms and confusion.

  • Electrolyte Imbalance: It can cause dangerously low potassium (hypokalemia) and high sodium (hypernatremia), affecting nerve and muscle function and heart rhythm.

  • At-Risk Groups: Individuals with heart or kidney disease, high blood pressure, pregnant women, and children should avoid ingesting baking soda.

  • Drug Interactions: Baking soda can interfere with the absorption and effectiveness of many medications, including aspirin, certain antibiotics, and heart medications.

  • Stomach Rupture: In rare cases, the rapid gas production from mixing baking soda with stomach acid can cause the stomach to rupture.

  • Safer Alternatives Exist: Commercially available antacids like calcium carbonate are considered much safer for treating occasional heartburn.

In This Article

Before taking any new substance, including baking soda, it's essential to consult with a healthcare provider. The information provided here is for general knowledge and should not be taken as medical advice.

Understanding Baking Soda (Sodium Bicarbonate)

Baking soda, known chemically as sodium bicarbonate, is a common household product used for baking, cleaning, and sometimes as a home remedy. In medicine, it's used as an antacid to temporarily neutralize stomach acid or intravenously to correct the body's pH balance. When ingested, it reacts with stomach acid to produce carbon dioxide gas. While it can offer temporary relief for indigestion, its potential for harm, especially with overuse, is significant and well-documented.

Minor and Common Side Effects

Even with appropriate use, some individuals may experience minor side effects from taking sodium bicarbonate. These are generally related to its effects on the digestive system.

  • Gastrointestinal Discomfort: The most common side effects include stomach cramps, gas, bloating, and a feeling of fullness due to the production of carbon dioxide gas.
  • Increased Thirst: The high sodium content can lead to increased thirst as the body signals a need to dilute the excess salt.
  • Frequent Urination: The body may attempt to expel the excess sodium and bicarbonate, leading to more frequent urination.

Serious Side Effects and Risks of Overuse

Long-term use, large doses, or use by individuals with certain health conditions can lead to severe and life-threatening complications.

Metabolic Alkalosis: This is a primary danger where the blood's pH rises to dangerously alkaline levels. The body's natural acid-base balance is disrupted, which can impair organ function. Symptoms can range from irritability, muscle twitching, and spasms to more severe effects like slow breathing, confusion, and seizures.

Electrolyte Imbalances: Baking soda is very high in sodium. Excessive intake can cause hypernatremia (high sodium levels), hypokalemia (dangerously low potassium), and hypochloremia (low chloride). These imbalances can lead to dehydration, muscle weakness, and life-threatening cardiac arrhythmias.

Cardiovascular Strain: The high sodium load forces the body to retain water, which can increase blood pressure and strain the heart. For individuals with pre-existing hypertension, congestive heart failure, or other heart conditions, this can be particularly dangerous, potentially triggering fluid retention (edema) and irregular heartbeats.

Kidney Damage: Healthy kidneys are typically able to excrete excess bicarbonate, but they can be overwhelmed by large doses. For those with chronic kidney disease (CKD), the ability to manage sodium and bicarbonate is already compromised, making them highly susceptible to fluid retention, worsening blood pressure, and further kidney damage.

Stomach Rupture: In rare instances, consuming a large amount of baking soda, especially on a full stomach, can cause a rapid production of a large volume of carbon dioxide gas. This has led to spontaneous and potentially fatal stomach ruptures. The FDA requested a warning be added to product packaging due to these reports.

Comparison: Recommended Use vs. Overuse

Feature Recommended Occasional Use (Under Medical Guidance) Overuse / Chronic Use
Usage Duration Short-term use, as directed by a healthcare professional Using for extended periods (e.g., over 2 weeks) without medical supervision
Intended Effect Temporary neutralization of stomach acid for occasional indigestion Chronic acid suppression, attempting to alter body pH
Common Side Effects Mild gas or bloating Frequent diarrhea, vomiting, muscle weakness, irritability
Serious Risks Low risk if used infrequently by healthy individuals under guidance. High risk of metabolic alkalosis, electrolyte imbalance, heart and kidney strain.

At-Risk Populations

Certain groups should avoid using baking soda as a home remedy altogether:

  • Individuals with Pre-existing Conditions: Anyone with high blood pressure, heart failure, liver disease, or kidney disease is at a much higher risk of serious complications.
  • Pregnant Women: Baking soda use during pregnancy has been linked to complications that can mimic pre-eclampsia and cause electrolyte imbalances.
  • Children: Children, especially those under 5, should not be given baking soda due to reports of seizures and respiratory depression..
  • Individuals on a Low-Sodium Diet: Due to its high sodium content, baking soda is unsuitable for anyone restricting their salt intake.

Drug Interactions

Baking soda can alter the pH of the stomach and blood, which can interfere with how the body absorbs and eliminates other medications. It is recommended to take baking soda at least 2 hours apart from other drugs. It can interact with:

  • Aspirin
  • Certain antibiotics (like cefpodoxime and tetracyclines)
  • Medications for high blood pressure and diuretics ("water pills")
  • Digoxin, ketoconazole, and amphetamines

Conclusion

While baking soda is a common household item, ingesting it as a self-prescribed remedy carries substantial risks that often outweigh its temporary benefits for indigestion. The potential side effects range from mild gastric distress to severe, life-threatening conditions like metabolic alkalosis, electrolyte disturbances, and acute strain on the heart and kidneys. Safer over-the-counter antacids are widely available and recommended. Due to the high risk of toxicity and drug interactions, sodium bicarbonate should only be used orally under the specific direction of a healthcare provider. If you experience severe symptoms like vomiting, muscle spasms, breathing difficulty, or confusion after taking baking soda, seek immediate medical help.

For emergencies, consider contacting Poison Control at 1-800-222-1222 in the U.S..

Disclaimer: This information is for general knowledge and should not be taken as medical advice. Consult with a healthcare professional before starting any new supplement regimen.

Frequently Asked Questions

No, it is not safe to drink baking soda daily. Long-term use can lead to serious health problems like metabolic alkalosis, electrolyte imbalances, and issues for your heart and kidneys.

Symptoms of a baking soda overdose include vomiting, diarrhea, muscle weakness and spasms, irritability, and in severe cases, convulsions, breathing difficulty, and seizures.

Yes, due to its high sodium content, excessive intake of baking soda can lead to fluid retention and increased blood pressure, which is especially risky for those with pre-existing hypertension.

Yes. Baking soda can change the way your body absorbs and gets rid of other drugs. It's recommended to take it at least 2 hours apart from any other medications.

No, baking soda is not safe for children, especially those under five years old. It has been linked to serious side effects including seizures and respiratory depression.

While some medical studies explore its use in specific kidney conditions under strict supervision, overuse by the general public can strain the kidneys, especially in those with existing kidney disease, due to the high sodium load.

Yes, gastrointestinal issues like diarrhea and vomiting are potential side effects of baking soda ingestion.

References

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10

Medical Disclaimer

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