Why do I get sleepy after drinking coffee, tea, or other caffeinated drinks?
Caffeine is a drug and needs to be metabolized to be excreted. This process is done mainly by our liver with the assistance of an enzyme called cytochrome P450 1A2 or “CYP1A2”. Since this specific enzyme has various inhibitors or inducers that can affect the production and efficiency of this process, there are many variables that may be a cause of your fatigue or anxiety.For example, if you go to a party and eat a grilled burger with a side of broccoli, are diabetic and take a dose of insulin, smoke while you’re there (not that I’m recommending, just giving an example), your effects of the caffeine may be less as these are all inducers of CYP1A2 meaning you’ll process the caffeine more efficiently.If you have the same amount of caffeine as the example above, but happen to be on cipro (nasty drug and I don’t recommend, but let’s just say your Dr. prescribed this for a UTI), while you are also taking oral contraceptives, and have self prescribed yourself some St. John’s Wort for viral or mood support. Since these are all inhibitors of CYP1A2, you may notice caffeine has an exaggerated effect on you.Caffeine may also produce different effects if you consume it on an empty stomach vs. with enough protein. Adrenal health is another factor and if you are depleted, running stressed out on “empty”, and not getting sufficient sleep, you may be experiencing some adrenal fatigue, which caffeine can aggravate and cause symptoms of fatigue and anxiety.Green tea tends to have a less harmful effect on people even though it has caffeine if you enjoy a caffeinated beverage, but are having negative effects.Here is an interesting article that may give you more insight too.Drug and Food Interactions with Caffeine
How long will 2 cups of coke keep me awake ?
It truly just depends on you. Personally, caffeine doesn't have an effect on me at all, and I usually fall asleep before finishing my Dr Pepper. You'll just have to judge for yourself using knowledge of past experience and knowing how strongly caffeine affects you
Can iced coffee keep you awake?
Why wouldn't it? Iced coffee is regular coffee that is on ice.
Is coffee bad for you I drink black coffee everyday?
Coffee is OK in moderation but can be bad in excessive quantities, like everything else. Best not to drink in the evening as the caffeine can cause insomnia, if you like coffee at night try decaffeinated coffee.
Will Green Tea keep me awake?
Green tea will keep you awake, because all teas contain some caffeine. While green tea usually contains much less caffeine than coffee, you will still feel the effects if you drink a couple of cups. One trick sometimes used by tea lovers is to throw away the first steep of the tea, then reuse the leaves for a new cup of tea. The theory is that most of the caffeine will have seeped out into the first cup (which you threw away). An alternative might be to drink herbal tea (chamomile, mint, hibiscus, or jasmin). Or you might consider switching to white tea, which contains less caffeine than green tea, but has three times the amount of beneficial antioxidants.