Malaria Tablets and Prevention: A Comprehensive Guide for UK Travellers

Malaria is a life-threatening disease caused by Plasmodium parasites, which are transmitted to humans through the bites of infected female Anopheles mosquitoes. For UK residents travelling to tropical regions—including parts of Africa, Asia, Central and South America, and the Middle East—malaria remains a significant health risk. According to NHS records, hundreds of British travellers return to the UK with malaria every year, often because prevention measures were inadequate or not followed correctly.

Because the symptoms of malaria can mimic other illnesses like the flu, and because certain strains such as Plasmodium falciparum can lead to rapid clinical deterioration, prevention is the primary focus of travel medicine. In the UK, the National Institute for Health and Care Excellence (NICE) and the UK Health Security Agency (UKHSA) provide regularly updated guidelines on which medications are most effective for specific global regions, as resistance to certain drugs can vary significantly geographically.

Health professionals in the UK use the 'ABCD' acronym to help travellers remember the essential steps for staying safe in malaria-endemic areas:

• Awareness of risk: Before you fly, check the FitForTravel or TravelHealthPro websites to see if your destination is a high-risk area.
• Bite avoidance: Use insect repellents containing at least 50% DEET, wear long-sleeved clothing, and sleep under insecticide-treated bed nets.
• Chemoprophylaxis: Ensure you are taking the correct antimalarial tablets (chemoprophylaxis) for your specific destination.
• Diagnosis and prompt treatment: Seek medical attention immediately if you develop a fever while abroad or within a year of returning to the UK.

There is no one-size-fits-all malaria tablet. The choice of medication depends on where you are going, your medical history, and any other medications you are taking. Common options prescribed in the UK include:

Atovaquone/Proguanil (Malarone)

This is often the preferred choice for short trips. It is well-tolerated with fewer side effects than older drugs. You typically start taking it one to two days before entering the risk area and continue for seven days after leaving. It is generally more expensive than other options but has a convenient dosing schedule.

Doxycycline

This is an antibiotic that also prevents malaria. It is often cheaper than Malarone, but you must continue taking it for four weeks after leaving the risk zone. A common side effect is increased sensitivity to sunlight (photosensitivity), which is worth noting if you are going to a sun-drenched beach destination.

Mefloquine (Lariam)

Mefloquine is taken once a week, which some find more convenient. However, it has been associated with neuropsychiatric side effects, such as vivid dreams, anxiety, and depression. It is generally not prescribed to individuals with a history of mental health conditions or epilepsy.

While malaria tablets are highly effective, they do not offer 100% protection. Therefore, avoiding mosquito bites is essential. Mosquitoes that carry malaria are most active between dusk and dawn. To reduce your risk, follow these NICE-aligned recommendations:

• Apply Repellent: Use a repellent containing DEET, Icaridin, or PMD on all exposed skin. DEET 50% is the gold standard for high-risk zones.
• Cover Up: Wear loose-fitting, light-coloured trousers and long-sleeved tops, particularly in the evening.
• Pre-treat Clothing: You can buy permethrin spray to treat your clothes, which provides an extra layer of protection.
• Secure Your Room: Stay in accommodation with air conditioning and well-fitted window screens. If sleeping outdoors or in basic accommodation, always use a mosquito net treated with insecticide.

Navigating travel health can be complex, especially with the wide range of antimalarial options available. Speaking to a GP online is a convenient way to ensure you have the right protection without needing to visit a physical clinic weeks in advance. An online GP consultation allows you to discuss your itinerary in detail, review your medical history for potential drug interactions, and receive a private prescription for the necessary tablets.

You should consider booking a consultation if you are travelling to multiple countries, if you are pregnant or breastfeeding, if you have a pre-existing medical condition like epilepsy or kidney disease, or if you have experienced side effects from antimalarials in the past. Early planning is key, as some medications need to be started a week or more before you depart.

Most people take malaria tablets with few to no issues. However, like all medications, they can cause side effects. Common reactions include nausea, headaches, and stomach upset. To minimise these, it is usually recommended to take your tablets with food or milk at the same time each day.

If you experience a severe rash, psychological changes, or significant digestive distress while taking your medication, you should consult a healthcare professional. Do not stop taking your tablets without seeking advice, as this will leave you unprotected against the parasite. If you forget a dose, do not double up; simply take the next dose as soon as you remember or as scheduled.