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Our friendly team is available to help Monday to Friday 9:00am – 5:00pm.
If you need urgent assistance, do not use this service. Call 111, or in an emergency call 999.
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Get fast, discreet treatment for infected insect bites from a UK-registered pharmacy. No GP appointment needed, no waiting rooms — complete a quick online consultation and have your medication delivered to your door.
Order before 3pm — same-day dispatch (MON - FRI)
~5 min consultation
Secure & confidential · Reviewed by a UK prescriber
No subscription required · Free repeat prescriptions · Cancel anytime
Suitable age
18 years +
Max per order
1 course
Consultation
Yes — free online consultation required
Flucloxacillin is a penicillin-type antibiotic used to treat bacterial skin infections, including insect bites that have become infected. Most insect bites are harmless and settle on their own, but when bacteria such as Staphylococcus or Streptococcus enter the broken skin, the bite can develop into a localised infection known as cellulitis. Typical signs of an infected bite include spreading redness, warmth, swelling, increasing pain, pus or fluid, and sometimes fever. Flucloxacillin works by stopping the bacteria from building their cell walls, which kills the bacteria and helps clear the infection. It is one of the first-choice antibiotics recommended in UK guidance for mild to moderate skin infections caused by these common bacteria. A short course is usually taken four times a day on an empty stomach, and our prescribers will confirm whether it is suitable for you during your free online consultation.
| Type of medicine | Penicillin-type antibiotic (prescription only) |
| Treats | Infected insect bites, cellulitis and other bacterial skin infections |
| Typical dose | 250mg–500mg four times a day, taken on an empty stomach |
| Course length | Usually 5–7 days — complete the full course as directed |
| How to get it | Free online consultation — approved and dispensed by a UK pharmacy |
Not every insect bite needs antibiotics. You should consider treatment for an infected bite if you notice spreading redness, increasing swelling, warmth around the area, throbbing pain, pus, or a high temperature. Flucloxacillin is usually taken as one capsule four times a day, at least 30 to 60 minutes before food, with the doses spread evenly across the day. It is important to finish the entire course even if the bite starts to look better, as stopping early can allow the infection to return and contributes to antibiotic resistance. Seek urgent medical help (call 111 or 999) if you develop a rapidly spreading red area, feel very unwell, are confused, or notice red streaks tracking away from the bite — these can be signs of a more serious infection that needs immediate care.
Flucloxacillin is one of the first-choice antibiotics in UK guidance for mild to moderate bacterial skin infections, including infected insect bites and cellulitis, because it targets the Staphylococcus and Streptococcus bacteria most commonly responsible. If you are allergic to penicillin, an alternative such as clarithromycin or erythromycin may be recommended instead. The right choice depends on your symptoms, allergies and medical history, which our prescribers assess during your free online consultation.
An infected bite usually develops a day or more after being bitten and tends to get worse rather than better. Warning signs include redness that spreads outward, increasing swelling and warmth, throbbing pain, pus or fluid, and sometimes a high temperature or feeling generally unwell. A normal reaction, by contrast, is itchy and red soon after the bite and settles within a couple of days. If you are unsure, start a consultation and our clinicians can help assess your symptoms.
Most people start to notice an improvement within 2 to 3 days of starting Flucloxacillin, with the redness, swelling and pain beginning to settle. It is important to keep taking it for the full course your prescriber recommends, usually 5 to 7 days, even if the bite looks better. If your symptoms are not improving after 2 to 3 days, or are getting worse, seek medical advice promptly as you may need a review.
No. Flucloxacillin is a prescription-only medicine in the UK, so it cannot be bought over the counter. You can, however, access it online without seeing a GP in person by completing a free consultation with our prescribers. If treatment is appropriate, it is approved and dispensed by our registered UK pharmacy and delivered to you discreetly.
The most common side effects are mild and affect the stomach, such as nausea, diarrhoea or indigestion. Less commonly, some people experience a skin rash. Rarely, Flucloxacillin can cause a serious allergic reaction or liver problems, so you should stop taking it and seek urgent medical advice if you develop a widespread rash, swelling of the face or throat, difficulty breathing, or yellowing of the skin or eyes. You should not take Flucloxacillin if you are allergic to penicillin. Full safety information is provided with your medication and reviewed during your consultation.
You do not need an existing prescription or a face-to-face appointment. Simply complete our short online consultation, which asks about your symptoms, allergies and medical history. One of our prescribers reviews your answers, and if Flucloxacillin is safe and suitable for you, they will issue a prescription that is dispensed by our UK pharmacy. The whole process is free unless a treatment is recommended and you choose to order it.
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Online review by a UK prescriber
Next-day delivery
Order before 3pm where offered
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