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(benz nid' a zole)
Before taking benznidazole,
- tell your doctor and pharmacist if you are allergic to benznidazole, metronidazole (Flagyl, in Pylera), any other medications, or any of the ingredients in benznidazole tablets. Ask your pharmacist for a list of the ingredients.
- tell your doctor if you are taking or have taken disulfiram (Antabuse). Your doctor may tell you not to take benznidazole if you are taking disulfiram or have taken it within the past two weeks.
- tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
- tell your doctor if you have or have ever had any blood disorders or liver disease.
- tell your doctor if you are pregnant or plan to become pregnant. Females who can become pregnant must take a pregnancy test before starting this medication. You should use birth control to prevent pregnancy during your treatment and for 5 days after your final dose. If you become pregnant while taking benznidazole, call your doctor. Benznidazole can cause fetal harm.
- do not breastfeed while taking benznidazole.
- you should know that this medication may decrease fertility in men. Talk to your doctor about the risks of taking benznidazole.
- do not drink alcoholic beverages or take products with alcohol or propylene glycol while taking this medication and for at least 3 days after your treatment is finished. Alcohol and propylene glycol may cause nausea, vomiting, stomach cramps, headache, sweating, and flushing (redness of the face) when taken during treatment with benznidazole.
- stomach pain
- loss of appetite
- weight loss
- uncontrollable shaking of a part of the body
- swollen, red, peeling, or blistering skin
- red- or purple-colored skin spots
- swollen lymph nodes
- numbness, pain, burning, or tingling in your hands or feet