Generic Name: edrophonium (ED roe FOE nee um)Brand names: Enlon, Tensilon, Reversol
Edrophonium is used as part of a medical test to help diagnose a muscle disorder called myasthenia gravis.
Edrophonium is sometimes used to reverse the effects of certain medications used to prevent muscle contractions during surgical procedures.
Edrophonium may also be used for other purposes not listed in this medication guide.
Before you receive edrophonium, tell your doctor if you have asthma, a heart rhythm disorder, or if you are allergic to sulfites. Also tell your doctor if you are pregnant or breast-feeding.Tell your caregivers at once if you have a serious side effect such as slow heart rate, chest pain, weak pulse, fainting, weak or shallow breathing, increased urination, seizures, or trouble swallowing.
Less serious side effects may occur (some of which can be expected as part of a positive test reaction to edrophonium) such as watery eyes, vision problems, changes in your voice, mild nausea, vomiting, stomach pain, weakness, or muscle twitching.
a blockage in your intestines; or
obstructed urine flow.
Before you receive edrophonium, tell your doctor if you are allergic to any drugs, or if you have:
a heart rhythm disorder; or
if you are allergic to sulfites.
If you have any of these conditions, you may need a dose adjustment or special tests to safely receive edrophonium.This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant before you receive edrophonium. Do not receive this medication without telling your doctor if you are breast-feeding a baby.
Edrophonium is given as an injection through a needle placed into a muscle or vein. You will receive this injection in a clinic or hospital setting as part of a medical test.
When used in diagnosing myasthenia gravis, edrophonium is given in small doses over 15 to 45 seconds. After each dose you will be observed for the expected reaction to this medication (muscle twitching, vision changes, increased muscle weakness, sweating, stomach cramps, nausea, and other symptoms). You may receive other medications to treat the reaction to edrophonium.
The test you are receiving may be repeated a second time.
Your specific edrophonium test may be performed in a different manner than described above.
Since edrophonium is given by a healthcare professional, it is not likely that you will miss a dose.
Overdose symptoms may include nausea, vomiting, diarrhea, sweating, slow heart rate, and increased salivation (drooling).
Follow your doctor's instructions about any restrictions on food, beverages, or activity after you have been treated with edrophonium.
slow heart rate;
chest pain, weak pulse, increased sweating, and dizziness;
feeling like you might pass out;
weak or shallow breathing;
urinating more than usual;
seizures (convulsions); or
Less serious side effects (some of which can be expected as part of a positive test reaction) may include:
watery eyes, vision problems;
changes in your voice;
mild nausea, vomiting, diarrhea, stomach pain;
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
There may be other drugs that can interact with edrophonium. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.