Malaria Tablets and Mosquito-Bite Prevention in Medway: What Travellers Need to Know

What is malaria?

Malaria is a serious, potentially life-threatening disease caused by Plasmodium parasites — most commonly P. falciparum, which is responsible for the majority of severe illness and deaths worldwide. The parasite is transmitted through the bite of infected Anopheles mosquitoes, which are active predominantly at dusk and dawn. Malaria is endemic across large parts of sub-Saharan Africa, South and South-East Asia, Central and South America, and some parts of the Middle East and Pacific.

Symptoms typically appear 7–18 days after infection and include high fever, chills, headache, muscle aches, and fatigue — symptoms that can easily be mistaken for influenza. Without prompt diagnosis and treatment, P. falciparum malaria can progress to severe anaemia, organ failure, and death within days. Early recognition matters enormously, which is why post-travel fever awareness is part of any responsible pre-travel briefing.

Malaria risk is not binary

A common misconception is that a country is simply “a malaria country” or not. In practice, risk varies considerably depending on a number of factors, and a blanket answer is rarely appropriate.

• Destination and region: Risk differs significantly within countries. A city hotel in Nairobi carries a different risk profile to rural Kenya at low altitude. Parts of Thailand are low-risk for most tourists; border regions with Cambodia and Myanmar carry higher risk and different drug-resistance patterns.
• Altitude: Malaria transmission generally does not occur above 2,000–2,500 metres. Trekkers spending time at altitude in East Africa or the Andes may have lower risk in the highlands, though this depends on the specific route.
• Season: Transmission rates are higher during and after rainy seasons, when mosquito populations peak.
• Urban versus rural: Urban travel in many countries carries less risk than rural travel, though this is not a reliable rule — some cities in West Africa, for example, have significant urban transmission.
• Accommodation type: Air-conditioned hotels with screened windows reduce exposure significantly compared to open-air lodges or rural homestays.
• Length of stay and activities: The longer you spend in a risk area, and the more time outdoors at dusk and dawn, the greater your cumulative exposure.
• Individual health: Pregnancy, asplenia, immunosuppression, and certain medical conditions increase the risk of severe malaria. These factors affect both the urgency of chemoprophylaxis and which tablet is appropriate.

This is why a pharmacist assessment — rather than a quick internet search — is important. Our pharmacists at Medway Pharmacy use up-to-date country-specific guidance from Public Health England and the TRAVAX and NaTHNaC databases to make recommendations tailored to your actual itinerary.

Antimalarial tablets available in the UK

There are four main antimalarial regimens used for UK travellers. None is universally suitable for every destination and every traveller — the right choice depends on where you are going, how long you are going for, your medical history, and any other medications you take. A pharmacist must assess your individual situation before prescribing.

Atovaquone/Proguanil (Malarone)

Malarone is taken once daily, starting 1–2 days before entering a malaria-risk area and continuing for 7 days after leaving it. It is well-tolerated by most travellers, with the short post-travel course making it particularly convenient for those who struggle with compliance over longer periods. Side effects are generally mild — nausea and abdominal discomfort occur in a small proportion of users and are usually reduced by taking the tablet with food.

Malarone is effective against P. falciparum in most destinations worldwide and is often the first-choice option for sub-Saharan Africa. It is not recommended in pregnancy or for people with severe renal impairment. The cost is higher than doxycycline — available at Medway Pharmacy from £2.50 per tablet — but for shorter trips the total cost difference is often modest.

Doxycycline

Doxycycline is a daily antibiotic, started 2 days before travel and continued for 4 weeks after leaving the malaria-risk area. It is the most cost-effective option for longer trips and is particularly useful for destinations in South-East Asia where P. vivax is also present, as it offers broad antimicrobial coverage.

The main practical consideration is photosensitivity: doxycycline increases sensitivity to sunlight, and sunburn can occur more readily and severely than usual. High-factor sun protection and covering up in direct sun are important. It should not be taken during pregnancy, and it is not suitable for children under 12. Nausea can be reduced by taking it with food, but it should not be taken immediately before lying down.

Mefloquine (Lariam)

Mefloquine is a weekly tablet, started 2–3 weeks before travel — a loading period that serves the important purpose of allowing any side effects to become apparent before departure, while still within reach of medical advice. It is continued weekly throughout travel and for 4 weeks after return.

The key consideration with mefloquine is a small but real risk of neuropsychiatric side effects, including vivid dreams, anxiety, dizziness, and — in rare cases — more serious psychiatric reactions. It is contraindicated in people with a history of psychiatric illness, seizure disorders, or certain cardiac conditions. For travellers without these risk factors who prefer a weekly dose, mefloquine remains a licensed option for many destinations. The early start date is important — starting it the day before departure is not appropriate.

Chloroquine ± Proguanil

Chloroquine, once the standard antimalarial, now has very limited use for UK travellers due to widespread P. falciparum resistance across most of Africa, Asia, and South America. It retains a role for a small number of specific destinations where chloroquine-sensitive malaria remains predominant — for example, parts of Central America and some areas of the Middle East. Chloroquine with or without proguanil is occasionally recommended for these regions but is rarely the first choice for high-risk destinations. A pharmacist will advise whether it applies to your itinerary.

Which antimalarial is right for me?

This is the most common question we hear, and it genuinely cannot be answered without knowing your destination, itinerary, medical history, and current medications. There is no universal best option.

What a pharmacist consultation at Medway Pharmacy will establish:

• The specific regions you will be visiting and their drug-resistance profiles
• Whether you have any conditions — renal impairment, pregnancy, psychiatric history, cardiac conditions — that rule out particular options
• Whether any of your current medications interact with antimalarials (anticoagulants and mefloquine, for example, require careful consideration)
• Your trip duration and how realistic the post-travel dosing period will be
• Practical factors such as sun exposure, shift patterns, and preference for daily versus weekly dosing

If you are travelling from Gillingham, Chatham, Rochester, Strood, Rainham, or elsewhere in Medway and need antimalarial tablets, our pharmacists can complete this assessment and supply the medication in a single appointment.

Timing: when to start your antimalarials

Starting your antimalarial tablets at the right time is critical, and the required lead time differs by drug:

• Atovaquone/Proguanil (Malarone): Start 1–2 days before entering the risk area. Continue for 7 days after leaving.
• Doxycycline: Start 2 days before entering the risk area. Continue for 4 weeks after leaving.
• Mefloquine: Start 2–3 weeks before entering the risk area. Continue for 4 weeks after leaving. The early start is specifically to allow time to detect any side effects before departure.

The post-travel continuation period is not optional. It exists because the parasite can remain dormant in the liver during your trip and become active after return. The majority of malaria cases in UK travellers present in the weeks after return — not while abroad. Missing those post-travel doses leaves you unprotected during the period when symptoms are most likely to appear.

If you are a last-minute traveller in Medway, contact us on 01634 575805before you assume it is too late. Malarone's short lead time means it can often still be started in time, even for departures within a day or two. Our pharmacy is open every day from 7:30am to 10:00pm. For general advice on travelling at short notice, see our guide to last-minute travel vaccinations.

Mosquito bite prevention: the ABCD approach

Antimalarial tablets significantly reduce your risk of developing malaria — but they do not provide complete protection. No antimalarial is 100% effective. Bite prevention is not a secondary measure; it is an equal part of the strategy. The ABCD framework is used by travel health clinicians across the UK:

A — Awareness of risk

Understanding that you are travelling to a malaria-risk area, knowing which nights carry the highest risk (dusk to dawn), and being alert to the symptoms of malaria after return. Awareness is the foundation everything else depends on.

B — Bite prevention

This is the layer most travellers underinvest in. Practical bite prevention measures include:

• DEET repellent: The most well-evidenced insect repellent available. For high-risk malaria areas, use a formulation containing at least 50% DEET. Apply to all exposed skin after sunscreen (not before — sunscreen goes on first, then repellent). Reapply as directed, particularly after sweating or swimming.
• Clothing: Wear long-sleeved tops and long trousers from dusk onwards, when Anopheles mosquitoes are most active. Light-coloured, loose-fitting clothing is preferable in hot climates.
• Permethrin-treated clothing: Permethrin is an insecticide that can be applied to clothing and fabric (not skin) and provides additional protection. Treated clothing retains efficacy through several washes.
• Mosquito nets: Use a permethrin-treated net over your bed, particularly in accommodation without air conditioning or screened windows. Tuck it under the mattress and check for tears before use.
• Air conditioning and screened windows: Where available, these significantly reduce indoor mosquito exposure. Keep windows and doors closed at dusk and during the night.

C — Chemoprophylaxis

Taking the antimalarial tablets prescribed for your trip, starting on time, and completing the full post-travel course. Compliance is the single biggest determinant of whether chemoprophylaxis works. A daily tablet missed for a few days in the middle of a two-week trip leaves a gap in protection that the drug's mechanism cannot compensate for overnight.

D — Diagnosis

If you develop a fever — or any flu-like illness, severe headache, or muscle aches — within one year of returning from a malaria-risk area, seek urgent medical attention and tell the clinician exactly where you have been. Malaria must be excluded before another diagnosis is assumed. This is not a precaution for unusual cases; it is standard guidance for all travellers returning from endemic regions.

Time matters here. P. falciparum malaria can progress to severe illness within 24–48 hours of symptom onset. Do not wait to see whether the fever resolves on its own.

Symptoms to watch for after return

The incubation period for malaria is typically 7–18 days, but can extend to several months for some species. P. vivax and P. ovale can cause relapsing illness months or even years after initial infection. The key rule for returning travellers is straightforward:

A fever within 12 months of returning from a malaria-risk area should be treated as malaria until proven otherwise. Go to A&E or call 999 if you feel unwell rapidly. Mention your travel history immediately — it changes the urgency and approach to your assessment.

Book malaria tablets in Medway

Medway Pharmacy is a dedicated travel health clinic based at 465 Canterbury Street, Gillingham, ME7 5LJ, serving travellers from across Medway including Chatham, Rochester, Strood, and Rainham. We are open every day from 7:30am to 10:00pm, and same-day appointments for antimalarial consultations are available.

We supply all four UK-licensed antimalarial regimens and can advise on the full range of bite prevention products. To book, call 01634 575805 or use the online booking link at the top of this page. For destination-specific information before your appointment, you can also check our destination guides or read our general overview of travel vaccinations in Medway.