In the past I got frequent headaches so I took aspirin. Tylenol never worked. The last few years Tylenol works fine for my occasional headaches. When hiking I frequently get leg cramps when I lay down in the tent. I take Ibuprofen and the cramps usually go away in less than five minutes. My doctor tells me that they cannot act that fast but I have experienced it on too many occasions to dismiss the result. The cramps are too real to dismiss as imagination and they do not go away until I take the Ibuprofen.