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.
If you use ibuprofen occasionally, there is only a minimal risk that the ibuprofen will interfere with the effect of low-dose aspirin. If you need only a single dose of ibuprofen, take it eight hours before or 30 minutes after taking a regular (not enteric-coated) low-dose aspirin.