Metronidazole, while effective, can cause side effects. Common reactions include nausea, vomiting, and diarrhea. These usually are mild and resolve without treatment. However, report persistent or severe gastrointestinal distress to your doctor.
Less common, but still possible, are metallic taste in the mouth and headache. These side effects often subside as treatment continues. Drink plenty of water to help manage a metallic taste. Over-the-counter pain relievers, such as acetaminophen, might help with headaches, but always consult your doctor first.
Serious Adverse Reactions
Rarely, metronidazole may cause serious reactions. These include seizures, peripheral neuropathy (numbness or tingling in the extremities), and blood disorders. Seek immediate medical attention if you experience any neurological symptoms like seizures or unexplained numbness. Regular blood tests may be advisable if you’re taking metronidazole for an extended period.
Drug Interactions
Metronidazole interacts with certain medications, notably alcohol. Avoid alcohol consumption during treatment and for at least 48 hours after completing the course. Interactions with anticoagulants (blood thinners) are also possible, requiring careful monitoring by your doctor.
Always inform your physician of all medications, supplements, and herbal remedies you are taking before starting metronidazole treatment. This ensures your safety and helps prevent adverse reactions.
