Ambisome, also called amphotericin B liposomal, is in the drug class of polyenes. This prescription medication is used to treat serious fungal infections such as meningitis. Ambisome is a common medication that is taken overseas to less developed countries. This is because these serious fungal infections are much more common than in more wealthy countries such as the United Kingdom or the United States. Ambisome can be administered through the veins via an IV. There is no capsule or tablet for Ambisome because the condition of the patient is often too severe to warrant a slow drug regime. The IV is often the fastest and most effective manner of delivering the medication.