What are the side effects of carboxymethylcellulose sodium?


What are the side effects of carboxymethylcellulose sodium?

Sodium carboxymethyl cellulose (CMC) is considered safe for consumption and use in appropriate amounts, but excessive intake or exposure to CMC may cause some side effects in humans. Here are some of the potential side effects of CMC:

  1. Gastrointestinal Issues:

One of the most common side effects of consuming high amounts of CMC is gastrointestinal issues. CMC is a water-soluble fiber that absorbs water and swells in the digestive tract, which can lead to bloating, gas, and diarrhea. In rare cases, high doses of CMC have been associated with bowel obstruction, particularly in individuals with pre-existing gastrointestinal conditions.

  1. Allergic Reactions:

Some people may be sensitive or allergic to CMC. Symptoms of an allergic reaction may include hives, rash, itching, and difficulty breathing. In severe cases, anaphylaxis may occur, which can be life-threatening. Individuals who are allergic to CMC should avoid products containing this additive.

  1. Dental Issues:

CMC is often used in toothpaste and oral care products as a thickener and binder. However, some studies suggest that prolonged exposure to CMC in oral care products can lead to tooth erosion and damage to tooth enamel. This is because CMC can bind to calcium in the saliva, reducing the amount of available calcium to protect teeth.

  1. Drug Interactions:

CMC can interact with certain drugs, particularly those that require the use of a normal gut transit time for their absorption. This may include drugs such as digoxin, lithium, and salicylates. CMC may slow down the absorption of these drugs, leading to decreased effectiveness or potential toxicity.

  1. Eye Irritation:

CMC is used in some eye drops and ointments as a lubricant and viscosity enhancer. However, some individuals may experience eye irritation or allergic reactions when using products containing CMC.

  1. Environmental Concerns:

CMC is a synthetic compound that does not break down easily in the environment. When CMC is discharged into waterways, it can potentially harm aquatic life by interfering with the natural ecosystem. Additionally, CMC can contribute to the buildup of microplastics in the environment, which is a growing concern.

It is worth noting that most of these side effects occur only when CMC is consumed or exposed in excessive amounts. In general, CMC is considered safe for consumption and use in the quantities allowed by regulatory bodies. If you experience any side effects after consuming or using products containing CMC, it is recommended to consult with a healthcare professional.

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