Loprin 75mg tablets contain the active ingredient low-dose aspirin, also known as acetylsalicylic acid. It is commonly used to prevent blood clots and reduce the risk of heart attack and stroke in patients with cardiovascular disease. It works by inhibiting the formation of blood clots by reducing the activity of platelets in the blood. It may also be used for pain relief, fever reduction, and inflammation reduction. As with any medication, it is important to follow the dosage instructions and consult with a healthcare professional before use.