Proguanil is a medication used in the prevention and treatment of malaria, a disease caused by Plasmodium parasites. It functions by inhibiting the enzyme dihydrofolate reductase, which is crucial for the survival of the malaria parasite. Proguanil is frequently used in combination with Atovaquone to enhance its antimalarial effectiveness, particularly against Plasmodium falciparum, known for causing severe malaria. This medication is available in a 100 mg dosage, with each pack containing a strip of 10 tablets. It is primarily prescribed for travelers visiting regions where malaria is prevalent. The side effects are generally mild and may include nausea or stomach discomfort. It is important to adhere to the dosage and instructions provided by a healthcare professional for safe and effective use.