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An unfortunate side effect of a number of medications is halitosis. Compared to the disease or disorder that a drug treats, a little bad breath might not seem like such a big deal. However, the odor that some prescription and over-the-counter drugs cause can be quite off-putting to others.
Here are a few medications that are known to cause bad breath.
Triamterene - This diuretic, which is used to treat high blood pressure and edema, lists halitosis as one of its side effects, according to the National Institutes of Health (NIH). Curiously, it may turn the urine a bright blue color.
Paraldehyde - It treats seizures and may also be used by healthcare professionals as a sedative, the NIH reports. The liver scrubs much of paraldehyde from the blood, but the rest often emanates from the lungs, giving patients who take the drug a powerful odor on their breath.
Disulfiram - Used to treat alcoholism, this drug has a number of unpleasant side effects, including high blood pressure, restlessness and halitosis.
Antihistamines - These medications, which are designed to stem the creation of mucus in the sinuses, may also slow the production of saliva in the mouth, leading to foul breath.
Moistening the mouth, particularly with specialty breath freshening products that neutralize odors, may prevent bacterial growth and leave the mouth smelling clean and halitosis-free.






