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Caffeine is a stimulant drug with a bitter taste. It is produced naturally by coffee plants. It can survive the heat of roasting and is water-soluble, so brewed coffee will contain caffeine. Use this tag for questions relating to caffeine content.

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What are the effects of caffein olfaction?

Does smelling caffeine share equivalent effects on our central nervous system to those immediately apparent when ingesting? More precisely, does the aroma of coffee necessitate a beneficial ...
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1answer
60 views

Is coffee/caffeine addictive?

I've heard that people get addicted. In other words, if someone has coffee regularly and they skip a day, then on that day they feel "low" or perform worse than they used to when they weren't a coffee ...
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1answer
72 views

How much caffeine is in 1 teaspoon of ground Arabica coffee?

Arabica is said to have less caffeine than Robusta. Couldn't find info about this specific question in Google hence asking here. The grind I have is for filter coffee.
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2answers
72 views

How long do the effects of caffeine take to appear?

Taking as a parameter the first sip of coffee we drink, and taking 10 minutes to drink a cup of coffee, how soon are the effects of caffeine to appear?
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2answers
36 views

Additions to decaff coffee to complement taste

I'm alternating drinking decaf bean coffee (O2 process) alongside caffeinated beans. Normally I drink caffeinated either black or with a little milk. With decaf, the reduced body of the taste is ...
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3answers
54 views

Caffeine and Hearing loss

What amount of coffee has an ototoxic effect after an acute noise exposure? I'm referring to this study: https://www.ncbi.nlm.nih.gov/m/pubmed/26940042/ I know that they use 25mg/kg which equals ...
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2answers
193 views

Will I get dehydrated from drinking coffee?

In fact, 54 percent of Americans over the age of 18 drink an average of 3.1 (8 oz) cups per day; the equivalent to 40 billion dollars spent solely on the ever-so-popular cup o' Joe. With over half of ...
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2answers
99 views

Finding if coffee is a health risk after best before

I have couple of coffee in my cabin where I visit on weekend and I saw 2 coffee which were best before xx 2017. One has big chunk of coffee and looks faded and the other got faded colour. I have no ...
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2answers
106 views

How bad is it for people with nervous tension to have coffee?

I am suffering from nervous tension and anxiety. Doctors have prescribed me regular anxiety reliever drugs and also asked me to completely stay away from tea, coffee, cola or any other beverages ...
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1answer
2k views

What is the caffeine content in Lavazza brand coffee

What is the caffeine content of the Italian coffee LAVAZZA brand? It is sold at several roast levels, so there is probably some variation.
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1answer
249 views

Caffeine vs Nicotine addiction [closed]

We, who love coffee very much, have a belief that coffee(which has caffeine) is better than cigarette or any other products which has nicotine. But as far as I know caffeine isn't so good for the body ...
7
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1answer
95 views

How does a snack with a coffee slow down the caffeine's effect?

I have stumbled upon the following sentence: Have your coffee with a snack to allow a slower release of caffeine into your system. Browsing the internet I could see exactly the same claims, not only ...
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1answer
352 views

Does ground coffee lose caffeine like it loses aroma?

What I know is that, for the best taste, one should grind the coffee right before brewing it. Storing ground coffee makes it lose part of its taste, even if there are ways to counteract that effect. ...
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0answers
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How to decaffeinate coffee? [duplicate]

I was wondering how coffee is being decaffeinated. How is this achieved? Are there different approaches? Since when is this practice?
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1answer
119 views

Recommended time to finish a cup of coffee for the best caffeine surge?

Is there such thing as a recommended time lapse in which to finish drinking a cup of coffee, in which you get the best kick out of the caffeine?
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5answers
366 views

Why do I feel lousy, low, out of energy after the high coffee gives?

I started drinking a lot of coffee after coming to college. I became instantly energized and social after grabbing a cup or two. But then at night I became extremely dull, unsocial-able, and quite ...
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1answer
153 views

Can I have this type of coffee?

I would like to know if people normally have the type of coffee I do. I take coffee from a vending machine that has a variety of options (latte, cappuccino, espresso) of which I choose espresso. This ...
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3answers
787 views

Does coffee consumption cause continuous chest pain? [closed]

I drink coffee twice a day for almost a month. Lately, for last few week, I feel chest pain right after drinking coffee. I initially thought that was some gastric related problem. But even after ...
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6answers
5k views

Why does French press not give enough 'Caffeine Effect'?

I've been drinking drip coffee for several years. It's been perfect for me. It tastes good and most importantly it makes me awake. Recently I started drinking french press coffee and there is ...
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1answer
1k views

How are caffeine pills made?

I tried googling but nothing on the manufacturing, only dosage FAQs etc. The question is: how are caffeine pills made, are they produced using synthesized caffeine, how much of a chemistry is ...
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2answers
397 views

Which Starbucks coffee have the least amount of caffeine?

I like coffee, my mom likes coffee, my dad likes coffee, and we all love Starbucks. My question is, which coffe has the least ammount of caffeine? I want to try to get one for my little sister :) (...
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3answers
3k views

How long should I stir French press before “pressing”?

What are the pros/cons and effects of stirring, either "too much" or "too short", in a French press? My rule of thumb for steeping is to let the coffee cool down to a drinkable temperature, then ...
5
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2answers
244 views

Effect of Sugar on Perceived Bitterness in Coffee

Abstract: Food and Function Sugar changes the chemical structure of tea and coffee Is this effect of sugar in water on coffee solids to be trusted? I like some coffees black (pourover, drip) and ...
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3answers
546 views

Will the quality of the coffee change if I store it in a plastic bottle?

I make my coffee every morning. I leave it to rest for 20-30 minutes, mix it with some milk, and pour it into a plastic bottle. I drink the coffee from that bottle during the day. Am I doing it right?...
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2answers
2k views

If I leave my brewed coffee to rest, will it lose caffeine? [duplicate]

I prefer to drink coffee cold. So, after the coffee is done brewing, I leave it to rest for some time and drink it later. Will the coffee lose its strength, if it is cooling down?
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1answer
230 views

Does eating a cookie created using coffee beans has the same effect as drinking coffee?

There are some cookie recipes using coffee beans. I've never tried any of them. But I am curious, if eating a cookie has the same effect as drinking coffee? Or is all of the caffeine lost during the ...
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1answer
309 views

Why does coffee lose caffeine as it is roasted?

I have heard that coffee actually loses caffeine as you roast it, which means darker blends have less caffeine. Why is this?
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0answers
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The relationship between hair growth and caffeine ..? [duplicate]

Does caffeine really enhance hair growth and keep the hair healthy? was it proven?
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7answers
1k views

How can I maximize the time the “high” lasts?

I know it's individual, but in general (or at least, in average): What are the main factors in how long does a coffee's "high" last? Can I deliberately make it last more than an hour? More than 3? I ...
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4answers
688 views

Should coffee be regulated?

A couple of questions/answers on this site make it clear that many people feel that coffee is addictive, at least for some fraction of consumers. My question, for those who believe coffee is ...
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1answer
4k views

How long does it take to reset caffeine tolerance

I've read on different websites, mainly fitness related, about cycling a pre-workout due to a build up of caffeine tolerance. The suggestions generally range in 1-2 weeks, but I think this would be a ...
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3answers
334 views

Student friendly coffee?

What type of coffee would you good people recommend as a quick and easy caffeine dose for staying alert? (specifically this, although I am fond of the taste too as a secondary factor!) I am currently ...
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2answers
469 views

Why is coffee comforting

I find drinking coffee relaxes me. Given that caffeine is a stimulant, I would expect it to do the opposite. Why? is it psychological? does it have something to do with it being a hot beverage? is it ...
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1answer
391 views

How much caffeine is lost after 24 hours?

Suppose I brew a 16 oz cup of coffee, take just one generous sip (one ounce), and then put the rest in the fridge. Just how "stale" is my coffee, when I revisit it 24 hours later?
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1answer
306 views

How many milligrams of caffeine are in a fresh coffee bean?

how much caffeine in a raw coffee bean? As in, raw, freshly picked, just remove hard outer shell and eat the rest.
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4answers
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Will I be addicted to caffeine?

If I drink coffee everyday, will I be addicted to it, or is it just a myth? Is there any risk to my own health due to caffeine?
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3answers
26k views

Which of these espresso variant contain more caffeine?

Can you please explain what is the difference between these types of coffee and which one of them contains more caffeine then the others: American Espresso Lungo Ristretto And please if it's ...
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1answer
321 views

Does making Bali Coffee change the amount of caffeine compared to filter coffee?

Bali coffee is made by tossing finely ground coffee directly in the water (no filters, etc.). Does this change the amount of caffeine in the coffee, compared to coffee from a filter machine? (Coffee ...
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2answers
420 views

Will I develop a caffeine dependency by skipping 2 days?

A couple of months a ago I broke my daily caffeine habit because I disliked waking up every morning already "needing" caffeine. But, I LOVE coffee and I LOVE the buzz caffeine provides. So, for the ...
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9answers
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How can I stay off coffee after I quit?

I have quit drinking coffee many times, and it was never that difficult for me to do, but can never stay quit for more than about 3 or 4 weeks. I typically drink 3, homebrewed cups a day, and only ...
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1answer
551 views

Does coffee affect people from all races the same?

I strongly assume that, if the looks from people all over the world vary, then also there metabolic system should vary and wonder, if there are noticeable differences how caffeine affects people from ...
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4answers
6k views

Is there more caffeine with an AeroPress?

I like everything about the AeroPress; however, I noticed that I exhibited symptoms which I usually only have when I've consumed too much caffeine. So instead of using two scoops during preparation ...
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3answers
679 views

Is there a “caffeine metabolism curve”, understood by general public?

I've long been interested in how long caffeine stays in my body and what are the effects at different concentrations and times. For example, a popular site erowid has metabolism curves for most ...
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3answers
326 views

Is coffee really useful for alcohol hangovers

When people experience a hangover due to too much alcohol intake the hours before, sometimes they are offered a good cup of coffee (at least in my country), not as the only or the main "treatment", ...
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1answer
132 views

Coffee and blood pressure

Several times one hears that drinking too much coffee produces an increase in blood pressure, that may be dangerous with people with cardiovascular diseases. Is it caffeine the only chemical to blame ...
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1answer
4k views

Can caffeine be extracted by the body when digesting coffee grounds?

I'm told my great-grandmother used to drink the coffee, then eat the grounds with some sugar. Assuming there was caffeine left in them, is the body able to extract caffeine from coffee grounds by ...
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1answer
1k views

Instant coffee has less caffeine than percolated and filter drip?

Sources related to average caffeine content per preparation method show: for (6oz cup, arabica coffee) Filter drip 150 [Mg. of Caffeine] Percolated 125 Espresso 100 Instant 60 Decaffeinated 4 ...
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1answer
2k views

How to increase your caffeine sensitivity?

I have been drinking coffee for a long time and over the last few years I've noticed that my sensitivity to caffeine has dropped significantly. Nowadays, it basically has no effect whatsoever - I can ...
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3answers
3k views

What is the optimal brewing technique for extracting caffeine?

I was wondering what process, or processes, would yield the highest caffeine quantity at a fixed drink size (Say 200ml). Assuming the same variety of bean, same roast, same quantity, same water ...
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1answer
647 views

Does caffeinating my hair follicles help prevent hair loss? [closed]

In the UK there is a product being very heavily marketed at the moment: Caffeine Shampoo. From their copy: This Caffeine Shampoo contains caffeine that can help to stimulate hair growth directly ...