The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes  the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation.
According to my doctor, 4 hours. You can switch them up. Take acetaminophen, (Tylenol), then wait 4 hours and take Ibuprofen, wait another 4 hours and take acetaminophen and sâ¦o on.
Ibuprofen, on the other hand, is removed from your body by your kidneys. Taking it for a long time can cause kidney damage and stomach bleeding. Using high doses of ibuprofen for longer than recommended can increase your risk of: blood clots; heart attack; stroke ; Check out examples of side effects of acetaminophen and ibuprofen below.