Doctor insights on:
How To Reverse Effects Of Caffeine
Stimulant: Caffeine's effects often depend on the individual. For some people, it can provide energy, focus, and alertness. In others, and especially at higher concentrations, it can cause jitteriness, problems sleeping, and palpitations. With repetitive use, you may become tolerant to caffeine, meaning its effects are reduced over time.See 1 more doctor answer
Caffeine: Caffeine possible side effects: nervousness, insomnia, restlessness, irritability feeling hyper, ringing in ears, rapid or irregular heart rate, nausea, vomiting, GI upset, shakiness, dizziness or allergic reaction. Symptoms of caffeine overdose may include: Restlessness, ^ heart rate, palpitations, nausea, vomiting, anxiety, insomnia, ^ sweating, dizziness & cardiac arrest.See 1 more doctor answer
Caffeine: Caffeine in moderation is ok. And if you want to take less, it is even better.
Caffeine: Caffeine is a mild stimulant - consider coffee, it is related to theobromine found in chocolate. Caffeine is also a mild diuretic and in the right circumstance could promote dehydration. Caffeine can interfere with sleep if taken too late in the day. It can make some people jittery as well.
WHY/: Ill effects are:feeling tremulous, palpitations, increased urination. Tachycardia can become abnormal such as atrial fibrillation in the past it has been used to enhance the effectiveness of analgesics and also for treatment of migraine headaches. I do not see a place for their use in a safe effective way.See 1 more doctor answer
Everyone's different: The side effects from excess caffeine consumption will vary from person-to-person. Some will complain of palpitations while others will complain of tremors. Most will report increase in urination. The duration of these effects will also depend upon your individual physiology. If side effects last longer than expected (few hours), go see your family doc to be sure there's nothing else going on.
Caffeine: Refer to diagram.Get a more detailed answer ›
Varies: Most side effects are temporary if one stops, these are usually insomnia, jitteriness, palpitations, nervousness, hyperactivity and diarrhea. But oftentimes if one has been a heavy caffeine user then one would probably get significant withdrawal symptoms like irritability, and headaches as well as fatigue--usually this last about 1-2 weeks then fades.
How long should the effects of a 200mg caffeine pill last? I think my tolerance is high. I have between 400-600mg a day.
Do people habituate to the effects of caffeine? If not, why do we seem to to other drugs, whereas coffee always seems to give people a boost.
Yes: Over time and chronic use, you will have tolerance to caffeine. You will need to have more quantity of the same drink or more frequently or more caffeinated drink.
I took 1 pill of Vivarin (caffeine) 1hr ago & never felt the effects. It recommends takin 1 every 3-4 hours can I take another 1? How can I keep awake?
Aspirin side effects: Caffeine shouldn't have significant adverse effects beyond insomnia if taken within a few hours of try to sleep. Aspirin when used intermittently in adults also shouldn't be a problem. When used chronically it can put you at increased risk for bleeding and high doses can be toxic. Follow the package labeling to be safe.
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