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Although lemon juice side effects are usually minor, drinking large quantities of this juice can cause some problems. These include heartburn, increased tooth sensitivity, diarrhea and allergic reactions. Lemon juice, like all citrus fruits, contains citric acid, and it is the acid that may cause problems when you drink a lot of lemon juice.


Although a relatively weak acid, citric acid is nevertheless an acid. Citric acid can irritate the esophagus and cause the burning sensation known as heartburn.

Increased Tooth Sensitivity

Acids of any kind can cause the erosion of tooth enamel. The enamel is what protects the nerves of the teeth, and if the enamel becomes thin, you may find your teeth are more sensitive to cold or to being brushed.

lemon juice side effects


Some people can develop citric acid intolerance. This is not an actual allergy, but your body’s negative response to a food substance. Diarrhea is one symptom of citric acid intolerance

Allergic Reactions

The most potentially serious of all lemon juice side effects is an allergic reaction to the citric acid. An allergic reaction is caused by your body’s immune system, which treats the offending food as an invader and tries to destroy it. You may develop hives, facial swelling, nausea or a severe drop in blood pressure. In its most acute form, an allergy can produce anaphylaxis, a condition that can be life-threatening in a few minutes if not treated immediately. If you are determined to have citric acid allergy, you will need to avoid citric acid in all forms, including lemon juice.

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One Response to Lemon Juice Side Effects – Can You Drink Too Much of It?

  1. erika says:

    this was VERY helpful. the first place i’ve seen that too much lemon juice can cause a drop in blood pressure. i eat a LOT of citrus and have been getting very tired after eating it lately. i think i have been experiencing rare citrus-induced hypotensive episodes.

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