Guanidine HCl

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

• easy bruising, unusual bleeding (nose, mouth, vagina, or rectum), purple or red pinpoint spots under your skin;
• pale skin, feeling light-headed or short of breath, rapid heart rate, trouble concentrating;
• fever, chills, sore throat, cold or flu symptoms, swelling or redness;
• loss of balance or coordination;
• a light-headed feeling, like you might pass out;
• pink or red urine, swelling, rapid weight gain, little or no urinating;
• pounding heartbeats or fluttering in your chest; or
• confusion, hallucinations, unusual thoughts or behavior.

Common side effects may include:

• numbness, tingling, or cold feeling (especially in your face, hands, or feet);
• dry mouth, upset stomach, loss of appetite;
• nausea, diarrhea, stomach cramps;
• feeling nervous, jittery, or irritable;
• tremors or shaking;
• increased sweating; or
• dry or scaly skin, redness or crusting around your hair follicles.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.