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GUANIDINE is a cholinergic muscle stimulant. This medicine is used for the myasthenic syndrome of Eaton-Lambert. Compare acetylcholine releasing agents.
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Guanidine Side Effects

What should I watch for?

Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.

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Common and Rare Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

Incidence not known

Ammonia-like breath odor

black, tarry stools

bleeding gums

blood in the urine or stools

blurred vision

burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings

change in frequency or amount of urine

chest pain

chills

cloudy urine

cold sensations in the hands and feet

confusion

cough

dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position

fast, irregular, pounding, or racing heartbeat or pulse

fever

increased thirst

loss of appetite

nausea or vomiting

painful or difficult urination

pale skin

pinpoint red spots on the skin

shakiness in the legs, arms, hands, or feet

shortness of breath, especially with exercise

sore throat

sores, ulcers, or white spots on the lips or in the mouth

sweating

swollen glands

unsteadiness, trembling, or problems with muscle control

unusual bleeding or bruising

unusual tiredness or weakness

weight loss

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not known

Abdominal or stomach cramps

burning, itching, and pain in hairy areas

crying for no reason

dry mouth

dryness and scaling of the skin

false or unusual sense of well-being

feeling irritated

feeling of warmth

feeling paranoid

jitteriness

large, flat, blue or purplish patches in the skin

mood or mental changes

pinpoint red or purple spots on the skin

quick to react or overreact emotionally

rash

redness of the face, neck, arms, and occasionally, upper chest

restlessness

seeing or hearing things that are not there

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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