Citric Acid
AvoidAcidulant
Citric acid is a naturally occurring acid found in citrus fruits and is widely used as a food additive to enhance flavor and preserve products. However, it can trigger heartburn and other symptoms in individuals with GERD due to its high acidity.
What is Citric Acid?
Citric acid is a weak organic acid that is naturally present in citrus fruits like lemons, limes, and oranges. It is commonly used in the food industry as a preservative and flavor enhancer due to its sour taste. Citric acid also plays a role as an acidulant, helping to maintain the acidity of food products, which is important for flavor and preservation. Beyond its use in foods, it is found in cleaning products and cosmetics.
Also known as:
Unsure about an ingredient? Scan it instantly.
Try SpoonfulDiet Compatibility
Citric acid, a common food additive, is a known GERD trigger due to its high acidity, which can directly irritate the esophagus. It can also weaken the lower esophageal sphincter, allowing stomach acid to flow back up and cause heartburn. Furthermore, even small amounts of citric acid can significantly increase stomach acid production, worsening reflux symptoms.
Learn more →This ingredient is generally considered compatible with a Fodmap diet.
Learn more →This ingredient is generally considered compatible with a Gluten Free diet.
Learn more →This ingredient is generally considered compatible with a Dairy Free diet.
Learn more →This ingredient is generally considered compatible with a Vegan diet.
Learn more →This ingredient is generally considered compatible with a Vegetarian diet.
Learn more →This ingredient is generally considered compatible with a Alphagal diet.
Learn more →This ingredient is generally considered compatible with a Soy Free diet.
Learn more →This ingredient is generally considered compatible with a Nightshades diet.
Learn more →This ingredient is generally considered compatible with a Oat Free diet.
Learn more →Compatibility ratings are general guidelines and may vary by individual. Always consult a healthcare professional for personalized dietary advice.
Why People Avoid Citric Acid
People with gastroesophageal reflux disease (GERD) often avoid citric acid because it is a known trigger for reflux and heartburn. The high acidity of citric acid can irritate the esophagus and weaken the lower esophageal sphincter, which is a critical factor in preventing stomach acid from rising back into the esophagus. This can lead to increased frequency and severity of heartburn and other GERD symptoms. Additionally, citric acid can stimulate the stomach to produce more acid, exacerbating reflux issues.
Potential Reactions
- Heartburn
- Acid reflux
This information is for educational purposes only and should not be considered medical advice. Individual reactions can vary. Consult a healthcare professional if you have concerns about specific ingredients.
Spoonful flags ingredients that don't match your diet.
Get the AppFoods That Commonly Contain Citric Acid
Browse products that match your diet.
Explore ProductsFrequently Asked Questions
Your Personal Ingredient Scanner
Spoonful helps thousands of people with dietary restrictions shop safely. Scan barcodes, read labels, and find safe alternatives — all in one app.

Take the Guesswork Out of Grocery Shopping
Join thousands who use Spoonful to find foods that match their dietary needs.