What are possible side effects of Pylera?

Possible side effects of Pylera, a pill used to kill the bacteria that causes stomach ulcers, can include:

• weakness,
• diarrhea
• constipation
• dark urine
• loss of appetite
• stomach pain
• heartburn
• dry or sore mouth or a metallic taste in your mouth

You should tell your doctor immediately -- and stop taking Pylera -- if any of these more serious side effects occur:

• numbness, pain or tingling in your hands or feet
• headache or blurred vision
• seizures 
• dizziness
• difficulty with speaking or coordination
• ringing in the ears
• confusion or agitation
• vaginal itching and/or discharge
• fever, sore throat or other signs of infection 
• bloody or tarry stools 
• nausea or vomiting
• itching, hives or a rash

You may also notice a temporary darkening of your tongue and/or of your stools, but this is harmless.

Pylera can also reduce the effectiveness of hormonal contraceptives, such as birth control pills, so you should use a backup contraceptive method while taking this medication.