But cutting back doesn't appear to reduce the risk of or help treat hypertension. Caffeine Dependence . Go cold turkey and that headache is for real. Caffeine increases the power of aspirin and other painkillers by about 40 percent. That's why it's in products like Anacin and Excedrin.
Caffeine also appears to work by itself.
And doctors often treat migraines by prescribing combinations of caffeine and other drugs that constrict blood vessels in the brain. Premenstrual Syndrome and Breast Lumps. Some women swear that it does, but the research isn't clear. But for more complicated tasks, like complex word problems, caffeine has also been shown to worsen performance. Caffeine can delay the onset of sleep.