If you’re planning a trip to a malaria‑risk area, you’ve probably heard about mefloquine. It’s an antimalarial pill that’s been around for decades, and many travelers rely on it for protection. This guide breaks down the basics – when to take it, how much, and the side effects you might notice – so you can decide if it’s right for you.
First, follow the doctor’s schedule. Most people start a dose one week before entering a malaria zone, keep taking it weekly while there, and continue for four weeks after leaving. The standard adult dose is a single 250 mg tablet once a week. Swallow the tablet with water; don’t crush or chew it. If you miss a dose, take it as soon as you remember unless the next dose is less than 24 hours away – then skip the missed one and get back on schedule.
Most users feel fine, but some report nausea, dizziness, or trouble sleeping. These tend to be mild and fade after a few weeks. A smaller group experiences vivid dreams or mood changes – if these get intense, talk to a pharmacist or doctor. Rarely, serious reactions like anxiety, depression, or seizures happen. If you notice severe mood swings, hallucinations, or heart palpitations, stop the medication and get medical help right away.
People with a history of psychiatric conditions should discuss alternatives before starting mefloquine. Some doctors prefer doxycycline or atovaquone‑proguanil for those at higher risk of mood side effects. Remember, the benefits of preventing malaria usually outweigh the risks, but it’s worth a frank conversation with your healthcare provider.
Storing mefloquine is simple – keep it in a dry place at room temperature, away from direct sunlight. Keep the bottle out of reach of children, as a single tablet contains enough drug to cause serious problems if taken by accident.
Bottom line: mefloquine works well for many travelers, but it’s not a one‑size‑fits‑all solution. Know the dosing schedule, watch for side effects, and have a backup plan if you’re prone to anxiety or sleep issues. With the right precautions, you can stay protected against malaria without unnecessary worry.
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