Coffee, tea or (caffeine) mints.
So, which of these have you popped or downed today?
These products all contain varying amounts of caffeine, alongside others you wouldn't have thought to contain it. Ice cream, frozen yogurt, breakfast cereals, pudding, pain medications … even cocoa butter lotion apparently all have it! 
Do you like most (or all) of these products? Then you must be wondering how much caffeine you take in daily.
We've got you covered.
Keep reading to find out the safe amount to consume and what might happen if you get too caffeine-happy.
Let's start with a very important question:
How much is too much?
Studies have shown that caffeine remains in the safe zone when consumed in low-to-moderate amounts . But what exactly does “low-to-moderate” mean?
The most important figure to remember on this topic is...
400 milligrams (mg).
That’s the amount of caffeine that’s considered safe to consume in a day… at least for adults. 
If you’re wondering what 400 mg means, you can refer to image below:
Note that caffeine content varies in different products so don’t forget to check the label!
And if you’re wondering how much the “killer” amount is (literally), then USA Today reports it would “likely take anywhere from 50-100 cups of coffee,” or a teaspoon of pure powdered caffeine ingested at once. 
Now you must really love your caffeine to death if you take in that much!
Drinking too much coffee or tea can cause withdrawal symptoms, caffeine rebound and medication rebound, which can all lead to migraine or the worse version of your typical headache. How this happens is covered in our article “Does caffeine cure or cause migraines?”
From modest doses [7, 8] to incredibly high intake (1,000 mg or more) a day [9, 10] caffeine could cause nervousness, rapid breathing, stress and mood swings. And studies say these adverse effects can take place regardless of how many times you have your caffeine – whether you’re a coffee-lover or just an occasional drinker. 
Read this article to find out when’s the best time to drink coffee.
Muscle tremors or rhabdomyolysis
Excessive caffeine intake can also cause rhabdomyolysis, which is a “serious syndrome due to a direct or indirect muscle injury. It results from the death of muscle fibers and release of their contents into the bloodstream.” [14, 15, 16, 17, 18]
One study cited a woman who guzzled a liter of coffee with 565 mg worth of caffeine and eventually suffered from symptoms of rhabdomyolysis, i.e. nausea, vomiting and dark urine. Don’t worry, she recovered after getting medical attention. 
High blood pressure
Rapid heart rate
Stimulant overload can also alter the rhythm of your heartbeat, which was reported among young people who had gone overboard with their energy drinks. 
More trips to the toilet
Most research reports higher likelihood of frequent urination or inability to control urination with excessively high caffeine intake, especially among older people or those suffering from incontinence.
In some cases, high consumption may even likely develop incontinence among those with a healthy bladder. 
While caffeine may be safe for adults, its effects could vary based on people’s tolerance. Research shows that genes may have something to do with it. That’s why some can have more cups of coffee over others without having any drawbacks. [28, 29]
Some people though should carefully watch their intake, especially the following:
The key to consuming caffeine without feeling robbed of your daily fix is to pay attention to your body and whether you're seeing signs of any of the adverse effects above.
If you think you're heading towards the danger zone, try to ease off on your favorite caffeine products and mix them up with decaffeinated ones.
But the most important one is to know is the content of the products you consume. Check the label, but be vigilant at the same time (some products may be disclosing a lower amount than the real one).
If you're not sure how much caffeine a product is supposed to have, fret not. Here's an infographic to guide you the next time you have your caffeine.
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Considered as supplements, these are your caffeine fix taken in capsule form. They may have natural caffeine straight from the brewing process, while others may have synthetic or artificial caffeine.
Caffeine pills provide the same stimulating benefits as coffee and other caffeine beverages.
Note that caffeine pills aren’t exactly those caffeine powder you see in bulk from the retail stores. In fact, the US Food and Drug Administration or FDA considers caffeine powder as “potentially dangerous.”  Caffeine pills are generally safe, though there are some precautions to note, which we’ll talk about later.
If you’re trying to lose weight (or at least not gain a few extra pounds), then the best thing to do is eat healthy and go to the gym more religiously, right?
But if you’ve been going at it for a while now and haven’t been seeing much progress, then you may want to look into something else.
Like your coffee consumption.
Now you may ask: what does an innocent cup of joe have to do with weight gain?
Let me tell you.
It’s not as innocent as it seem.
That cup of coffee you buy on your way to work? It may be sneaking in a few extra calories (more than you’d like and expect). And if you buy more than one cup a day, you may be racking up a few calories from a “dessert” that disguises itself as your go-to caffeine fix.
The holidays are upon us. It’s only October but with the rate this year has gotten to the tail-end, we’ll all be wearing our favorite sweatshirts (forcibly or otherwise) and devouring the holiday away in no time.
The forward-looking you will already be starting to watch that *extra holiday weight* before the holiday even starts.
But one step at a time, right? After all, there’s a few weeks left before the celebrations and holiday parties officially kick in.
If the java lover in you has ever been curious whether caffeine can help curb the appetite, now is the perfect time to find some answers.
The word on the street is that caffeine is one of the best appetite suppressants.
Spoiler alert: researches tell us the jury’s still out on this one.