How does Procaine work?

Procaine works as an anesthetic when injected. However, procaine doesn't get absorbed well when it is taken by mouth. It is unclear how it might work for medicinal uses when taken by mouth.

Are there safety concerns?

It is not known whether procaine is safe when taken by mouth. It can cause some side effects including heartburn, migraines, and a serious condition called systemic lupus erythematosus (SLE). SLE causes a variety of symptoms including joint pain, rashes, lung problems, and many other symptoms.

Procaine is safe when the prescription-only product is given as a shot by a healthcare professional as a local anesthetic.

Special Precautions & Warnings:

Pregnancy and breast-feeding: It's UNSAFE to use procaine for self-medication if you are pregnant. If you are breast-feeding, it is also best to avoid using procaine. Not enough is known about how it might affect the nursing infant.

Myasthenia gravis, a progressive disease that weakens the muscles: If you have myasthenia gravis, you should not be given procaine intravenously (by IV).

Pseudocholinesterase deficiency, an inherited disorder: People with this disorder are sensitive to certain anesthetic drugs. If you have this disorder, you should not be given procaine by injection.

Systemic lupus erythematosus (SLE): Procaine might make this condition worse. Don't use procaine if you have SLE.

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Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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