The time it takes for 800 mg of ibuprofen to kick in can vary depending on several factors, including individual metabolism, body weight, and the presence of food in the stomach. However, in general, you might start to feel the effects of ibuprofen within 30 minutes to an hour after taking it.
Keep in mind that while you may start to feel some relief within this time frame, it may take longer for the medication to reach its full effect. Ibuprofen is commonly used to reduce pain and inflammation, and its effects can last for several hours.
It's important to follow the recommended dosage and guidelines provided by your healthcare professional or the medication's packaging. If you have concerns about the timing or effectiveness of the medication, it's best to consult your doctor or pharmacist for personalized advice.