Common side effects · constipation or diarrhoea · dizziness · feeling sleepy or tired · bloating and stomach pain · headaches · feeling sick (nausea) or being sick ( … It knocked me out for about 3 hours today. I\’ve never experienced such drowsiness from a medication before. I\’ve felt like I was sinking into my … It may cause sleepiness, skin reactions or other side effects. Naproxen may be unsafe for people with certain medical conditions. Talk to your provider to learn … Some people experience mild drowsiness, headache, and dizziness. Like other NSAIDs, naproxen can cause acute kidney failure, which is usually reversible. Kidney … Another side effect of naproxen is drowsiness. Again, it might hit you quite hard, making your eyelids feel heavy, or might not touch you at all … Naproxen Tablets may make you tired, drowsy, dizzy, have problems with your eyesight and balance, depressed or have difficulty sleeping. Talk to your doctor … If you become drowsy, dizzy or light-headed after taking NAPROXEN, do NOT drive or operate machinery. NAPROXEN may cause you to become more sensitive to … Tiredness and drowsiness is actually a common side affect of naproxen as it can affect your synapses in your brain, and many non-steroidals … This medicine may cause some people to become dizzy, lightheaded, drowsy, or less alert than they are normally. Even if taken at bedtime, it may …