Posoxil 40mg Oral Suspension belongs to a group of medicines called antifungals. It works by stopping the growth of fungus and is used to treat fungal infection. It kills fungi by destroying the fungal cell membrane.Posoxil 40mg Oral Suspension should be taken in the dose and duration as prescribed by your doctor. They should be swallowed whole and taken with food. The dosage and length of treatment will depend on the condition you are being treated for. Sometimes this will be in cycles of use and non-use. To get the most benefit, take this medicine at evenly spaced times and continue using it until your prescription is finished, even if your symptoms disappear after a few days. If you stop treatment too early, the infection may return and if you miss doses you can increase your risk of infections that are resistant to further treatment. Tell your doctor if the infection does not get better or if it gets worse.The most common side effects of this medicine include headache, diarrhea, feeling sick (nausea), and low potassium level. These are not usually serious, but you should call your doctor if you think you might have a severe allergic reaction and sign of liver problems such as yellowing of eyes, dark urine, and stomach problems. Get emergency help if this happens.Do not take it if you are pregnant or could become pregnant unless your doctor has told you to. Talk to your doctor before taking it if you have ever had heart failure, kidney problems, or liver problems such as yellow skin (jaundice). This medicine may not be suitable for you. If your course of treatment is for more than a month, your doctor may want to check your liver, and potassium level by testing your blood. The drugs may make you dizzy or have blurred vision so do not drive or operate machines until it is safe.