It sounds like you're mentioning a medication, but it's important to be cautious with any prescription or over-the-counter drugs. "Cap iwin 200 mg" doesn't ring a bell as a common medication name. Could you provide more details or double-check the name? If it's a prescription, it's always best to follow your doctor's instructions. If you're unsure or have any concerns about the medication, consulting a healthcare professional would be the safest route.