Phenoxymethylpenicillin is kind of antibiotic that belongs to the penicillin family. Penicillin is a very common form of antibiotic that kills a limited number of species of bacteria in various conditions. More information

A doctor will review your order and write you a prescription, if appropriate. This prescription is then forwarded to a pharmacy. The pharmacy will have your medicine delivered to you within one to three working days. Read more about this process here.

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Phenoxymethylpenicillin 125 mg/5 ml sugar free oral solution 100 ml

Phenoxymethylpenicillin 250 mg/5 ml sugar free oral solution 100 ml

Phenoxymethylpenicillin is a medication used to prescribe various infections, ranging from cellulitis to ear infections and chest infections. It is very common to use this particular medication to treat respiratory infections in children. In some cases, you may be given this substance to help reduce your risk of a further infection after a disease.  

What is Phenoxymethylpenicillin? 

Phenoxymethylpenicillin is kind of antibiotic that belongs to the penicillin family. Penicillin is a very common form of antibiotic that kills a limited number of species of bacteria in various conditions. You can order Phenoxymethylpenicillin through various pharmacies, but it is only available on prescription. Phenoxymethylpenicillin is a kind of penicillin antibiotic that works by interfering with the cell walls of certain kinds of bacteria.  

The cell walls of a bacteria are crucial to the survival of that bug. The walls stop unwanted substances like medicines from entering the cells. At the same time, they help to prevent critical substances from leaking out. Phenoxymethylpenicillin reduces the bond that holds the walls of various cells together, allowing for holes to appear in the walls and kill the bacteria.  

Phenoxymethylpenicillin will not work on all kinds of infection because it is a small spectrum form of antibiotic. This means that you can only use it for very specific conditions. If you are given this treatment and you do not notice any results after a few days, then you may need a different kind of antibiotic.  

Importantly, Phenoxymethylpenicillin and other antibiotics should not be taken to treat the common viral infections that many people suffer from regularly, like flu and colds. It is important to follow the instructions given by your doctor.  

When is Phenoxymethylpenicillin used? 

Phenoxymethylpenicillin and similar forms of penicillin based antibiotics can be used for a multitude of reasons, including infections of the throat and chest. Phenoxymethylpenicillin is best at treating bacterial infections of the throat, chest, skin, ear, and other areas. In some conditions, your doctor will also give you a slightly lower dose of this medication after an illness or a certain kind of surgery. 

For instance, if you have had your spleen removed, then using Phenoxymethylpenicillin regularly can help to reduce your risk of dangerous infections. Additionally, Phenoxymethylpenicillin can help to reduce your risk of infections if you have sickle cell disease. Sometimes, Phenoxymethylpenicillin is given to people with rheumatic fever too.  

Phenoxymethylpenicillin and other antibiotics like it are only available through a prescription from a consultant. You will need to speak to your doctor if you feel that Phenoxymethylpenicillin is not helping to get rid of your symptoms, as sometimes bacteria will not respond to this medication. Many bacteria are becoming resistant to penicillin. If Phenoxymethylpenicillin is working for you, then you should start to feel better in a few days.  

How do you use Phenoxymethylpenicillin? 

Before you start using Phenoxymethylpenicillin, it is important to listen to the instructions and advice given by your consultant carefully. You can ask any questions you might have about using this medication if you are concerned. Before you begin using Phenoxymethylpenicillin, make sure that you read through the patient leaflet that comes included with this substance. This will provide you with some basic information about how Phenoxymethylpenicillin works, and the side effects that it can sometimes cause when you take it.  

Ensure that you take Phenoxymethylpenicillin exactly as you are told to do so by your consultant. Usually, it is taken four times each day for the short-term infections, but it could be given for a long-term treatment to prevent infection too. You may take a much lower dose in this case. If you have been given the liquid version of this medication for a child, you will need to read the directions carefully, and use the special measuring device included to ensure that you get the right amount of medication.  

Phenoxymethylpenicillin is best taken with a glass of water, and when your stomach is empty. This means that you will need to take your doses at least one hour before you eat any food. On the other hand, if you need to take Phenoxymethylpenicillin after you have eaten food, then you will need to wait at least two hours. This is because your body will not absorb as much of the medicine when you are taking it with a meal.  

If you forget to take a dose of Phenoxymethylpenicillin at the time that you intended, make sure that you take it as soon as you remember, but do not double up your dose to make up for a missed pill 

What dosages are there? 

Your doctor will tell you what dose of Phenoxymethylpenicillin is suitable for you based on your condition and the effects that you want the medication to have. You will usually be asked to take a dose of four pills per day at evenly spaced times. For adults and children over the age of 12, the usual dose is between 250 and 500 mg. However, children between six and 12 years will only take 250mg. Children under the age of 6 will usually only receive a dose of 125 mg. 

When taking any medication with antibiotics as an active ingredient, it is important to remember that your symptoms may begin to get better before your treatment is finished. You will need to continue using Phenoxymethylpenicillin until you have completed the full dose, even if you feel better before you are done with your packet. If you stop taking the medication early, then the bacteria may grow back, and your chances of becoming resistant to the antibiotic will be much higher.  

Specific doses can be given to children under the age of six depending on their unique needs. For this purpose, you will need to speak to a doctor. Remember, if you are using Phenoxymethylpenicillin to prevent an infection or reduce your risk of future infections, your dose will usually be lower and more long-term. However, if you are taking Phenoxymethylpenicillin for an acute infection, it should not be taken for a long time, or more than 7 days unless specified by your doctor. 

What are the side effects of Phenoxymethylpenicillin? 

Phenoxymethylpenicillin is a very well-tolerated form of antibiotic. However, like other medications, Phenoxymethylpenicillin and penicillin based substances can sometimes cause side effects alongside their intended effects. Your response to Phenoxymethylpenicillin may be different to other people’s. It is important to read the patient leaflet provided with this medication to learn more about the side effects. In some cases, the side effects that you experience with Phenoxymethylpenicillin will go away naturally over time as your body gets used to the medication.  

The most common side effects with Phenoxymethylpenicillin are feelings of sickness or nausea. You may also have abdominal pain and may need to stick to simpler foods. Avoid drinking less if you have side effects like diarrhea and sickness, as this could make it more likely that you’ll suffer from dehydration. Make sure that you drink plenty of water to replace the lost fluids. If your diarrhea contains blood or becomes particularly severe, make sure that you speak to a doctor immediately.  

One other common side effect of Phenoxymethylpenicillin is thrush or redness and itchiness in the vagina or mouth. You can speak to your doctor to get treatment for this. Skin rashes are also a possibility when using Phenoxymethylpenicillin.  

Phenoxymethylpenicillin allergic reactions can be a serious problem. Make sure that you immediately stop taking this medication and seek emergency medical attention if you notice a rash, dizziness, trouble breathing, or swelling in your mouth, throat, or lips. 

When shouldn't you use Phenoxymethylpenicillin? 

Although many people respond well to Phenoxymethylpenicillin as a broad antibiotic, some children and adults will not be able to take this medication. When you are having your consultation, it is important to answer any questions that your consultant has and provide plenty of information about your medical history. Phenoxymethylpenicillin will not be suitable to anyone who has a penicillin allergy, as well as those with other allergies that are affected by inactive ingredients in the drug. 

You cannot take Phenoxymethylpenicillin if you have kidney or sensitivity to penicillin. Additionally, it is worth noting that a lot of different bacteria in the world today has developed a resistance to this medication. This is because of the widespread use of antibiotics for reasons that they were not intended for. To ensure that your condition will be treated by Phenoxymethylpenicillin, your doctor might want to take a sputum sample, or a swab.  

Does Phenoxymethylpenicillin interact with any other medications? 

It is possible that Phenoxymethylpenicillin will react negatively to other medications that you are already taking. There are a number of substances that do not mix well with Phenoxymethylpenicillin. It is important to tell your consultant about any substances that you are taking at the same time as this antibiotic, including herbal substances or remedies that you have purchased for yourself over the counter. 

Your doctor will use Phenoxymethylpenicillin cautiously with warfarin or similar blood thinners and avoid using it with methotrexate. You should not take Phenoxymethylpenicillin with typhoid vaccinations, other antibiotics, and gout medications like probenecid. Your consultant will be able to tell you whether any of the medications that you are on will affect Phenoxymethylpenicillin.  

Where can you buy Phenoxymethylpenicillin? 

With all antibiotics, you must see your doctor face to who will assess your need for treatment .Phenoxymethylpenicillin is available to purchase from pharmacies with a prescription. Make sure that you finish your consultation with us, then we can send you a prescription to a local pharmacy to collect within three working days.  

Can you get Phenoxymethylpenicillin without a prescription?  

Phenoxymethylpenicillin and other antibiotics similar to it are not available without a prescription. Please begin a consultation to see if this medication is right for you.  

Sources, online, 2019, “PHENOXYMETHYLPENICILLIN 250MG TABLETS” [Accessed 3rd of December 2019], Available on:, online, 2019 , “Phenoxymethylpenicillin 250mg Film-coated Tablets”, [Accessed 3rd of December 2019], Available on: 

MHRA, 2019, online, “PHENOXYMETHYLPENICILLIN 250MG TABLETS PL” [Accessed 3rd of December 2019], Available on: 

Assessed by:

Dr Imran Malik, General practitioner
Registration number: GMC: 4741365

Dr Imran Malik studied undergraduate medicine at King's College University in Central London and clinical studies at the prestigious King's College Hospital. He graduated with a MBBS degree in 2000 and went on to gain postgraduate memberships with the Royal Society of Medicine and also General Practice in 2006.