(Mestinon® is another name)

Use: Pyridostigmine is a drug called a cholinesterase inhibitor and allows the weakened muscles of pets with myasthenia gravis to work better.

Side Effects: Known side effects of pyridostigmine include vomiting, diarrhea, drooling, lung spasm, pinpoint pupils, blurry vision, watery eyes, irregular (too fast or too slow) heart beat, heart spasm, low blood pressure, muscle spasm and weakness.  If your pet shows any signs of these adverse effects, you should call your veterinarian.

Precautions:  You should elevate the food bowl while feeding your pet to avoid any risk of aspiration (inhaling food into the lungs) due to weak swallowing muscles.

Directions: May be given as oral tablets or liquid, but you should not switch your pet back and forth between tablets and liquid because this can change the amount of drug that gets into your pet’s bloodstream.  The successful outcome of your animal’s treatment with this medication depends upon your commitment and ability to administer it exactly as the veterinarian has prescribed. Please do not skip doses or stop giving the medication. If you have difficulty giving doses consult your veterinarian who can offer administration techniques or change the dosage form to a type of medication that may be more acceptable to you and your pet. Some other drugs can interact with this medication so tell your veterinarian about any drugs or foods that you currently give your animal. Do not give new foods or medications without first asking your veterinarian. Dogs usually receive pyridostigmine by mouth two to three times daily. Cats rarely receive this drug, but if they do, it is given only once daily.

Storage: Keep in the original container. Keep out of the reach of children and pets. Capsules and tablets may be stored at room temperature. Some liquids should be stored in the refrigerator (see the prescription label.)  Store all medicines away from excess heat and moisture. Do NOT store in the bathroom.

If you miss a dose give it as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue with the regular schedule. Do not give a double dose to make up for the missed one.