Prednisone is a potent corticosteroid that is often prescribed to patients with conditions such as asthma, allergies, and arthritis. It works by decreasing inflammation in the body, and it can be used to treat a wide range of diseases. However, it's not available without a prescription from a doctor in Costa Rica. It is only available at pharmacies with a valid prescription from a licensed medical professional. There are many pharmacies in Costa Rica that sell prednisone, but prices can vary depending on the location and the specific pharmacy. On average, the price of a onemonth supply of prednisone ranges from $10 to $20 USD. However, it's important to note that prices may be higher or lower in different parts of Costa Rica. It is recommended to visit a local pharmacy and ask for the price before purchasing the medication, also it is important to consult with a doctor before taking any new medication, as it could have interactions with other drugs you are currently taking, or have side effects that could affect your health.