Does Green Tea have caffeine?

Tea, as we know, is the most consumed beverage or drink after water. It is consumed by all people of all races. set_of_teapot_and_tea_cup

Many people cannot start their day’s job or activities without a cup of tea or coffee, However tea contains one of the dreaded compounds called caffeine.Does the name ring a bell?

I have heard many people argue that drinking tea is not safe because of caffeine. Some  folks say  it is only black teas that contain caffeine while others  ask if  Green Teas  have  caffeine? .

So the question is , is drinking tea safe? Is it all teas that contain caffeine or only black tea? Some people prefer tea to coffee because they believe is only coffee that has caffeine.  All these I will answer in a moment.

What is caffeine?

Caffeine is an alkaloid compound which is found in some plant product like in coffee beans, tea, soft drinks, cocoa and chocolate and it’s a stimulant of the central nervous system.

Caffeine is also found in some prescription and non-prescription drugs, including cold, allergy and pain relievers.

How safe is in taking caffeine?

Caffeine acts as a stimulant by exerting an effect on the central nervous system. The effects of caffeine on the body may begin as early as 15 minutes after ingesting and last up to six hours.

When consumed in moderate doses (up to 250 mg, or about two 6-oz cups of coffee or about four 12-oz colas), caffeine can help people to be more alert and less sleepy.

Most individuals consuming moderate amounts will experience few if any; negative side effects

Therefore caffeine intake should not be more than your body capacity level. There is a caffeine calculate you can use to measure what your body size can accept as normal.

Caffeine can be lethal if you abuse it by ingesting more than your body capacity intake, so what quantity can be dangerous you may ask?

The Mayo Clinic suggest 200 to 300mg level a day is not dangerous but above 500mg daily can be dangerous and cause health problems,

People react to caffeine differently, some people are allergic to it, even a small quantity intake may result to a health problem – people in this category should stay away.

If they insist on taking tea, that should be an herbal tea that is caffeine free.

How much caffeine is in Black Tea, Green Tea, Oolong Tea, White Tea, Herbal Tea and other Teas?

This is really debatable. Many studies have shown you cannot generalize and say Black tea has a higher content of caffeine than green tea or oolong tea.

This is because the content of caffeine in a tea is determined by several factors, like the mode of processing, the part of the tea plant use in making the tea and how the tea is brewed especially timing, the tea grade and varieties,

For example if you brew Oolong tea with hot water for 6 minutes, the caffeine contact will be higher than the one you see in a black tea done with warm water and a lower brewing time of say 3 minutes. .

However others say it depends on the type of tea, both ideas are useful considerations. Let’s explore the teas more closely.

Black Tea

Black Tea is presumed to contain more caffeine than other types of Tea, but as we indicated above it is not really so. Keemun_FOP_(2)

However studies have shown that Black tea contains between 40 – 120mg of caffeine for a cup (8 oz.) of Tea while for decaffeinated 8 oz. cup of tea contains between 1 – 10 mg of caffeine.

Green Tea.

Green tea sometimes is presented as if it does not have caffeine. This is not correct. Green tea also has caffeine but in most cases lower than what is obtainable with black Tea.-Leaves_of_green_tea

There are many ranges out there but the Mayo Clinic indicates a 20 – 40mg for a 240ml cup of tea. Some others studies show something lower between 5 – 20 mg for an 8oz cup of Tea.

However, there is an exception. This is the popular Matcha Tea in powder form, which makes you consumed the tea leaf as well and not just the infusion. The caffeine content is higher , about 60 mg.

White Tea.

White tea is generally believed by most people to contain lower caffeine than Black Tea. As we have said earlier, it depends on a couple of things.white-tea 4

For instance, white Tea processed from the Tea buds and Tips can have more caffeine than Black Tea or Green Tea.

This is because you have more caffeine concentrated on the buds and tips of tea plant than other parts of the tea or on older tea leaf . On the average, a white tea contains 28 mg of caffeine for a cup of 8 Oz of Tea.

A caffeine test on white Tea by The Journal of Food Science showed differing results. For White Tea as seen below

White Tea Variety Caffeine per2gm of Tea
Exortca China white Tea by Stash tea co 59,4mg
Fusion Green & white by Stash Tea co 38.2
Lipton White  Tea peach Mango 15mg

The above variations are how it is for other teas when tested, and this poses great challenge for Tea consumers who may be trying to control or avoid ones that have high caffeine content, However, this is why we are here to share information with you,

Chai Tea

Chai Tea is Indian processed tea blended with different species and Milk. They are popular in the west and generally contains low caffeine because of the blend, averagely a chai Tea contains 40 mg /8 Oz cup of tea

Oolong Tea,

Oolong Tea is a popular Chinese made tea and comes from the Camellia Sinensis plant. The caffeine content differs in varieties, ranging between 16mg to 55 mg/ cup of 8oz from the test conducted by American Journal of food science published in Vol, 70, issue 9, Nov 2005.

Herbal Tea

Herbal teas like Lemongrass tea, Peppermint tea, Moringa, chamomile teas etc. are caffeine free unless when they are blended with the Tea plant Camellia Saneness.lemo grass

Herbal teas are very medicinal and have calming and soothing effect instead of the stimulating effects of teas that contain caffeine. The South Africa Red Rooibos Tea is also caffeine free.

Finally, caffeine is n ot injurious to health if you take what is appropriate to your body capacity.

All Teas contain caffeine with the exception of Herbal Teas. Limit yourself to daily consumption capacity and for a healthy person, it should not be more than 300mg.

I will like to hear from you. If you have any question or comment please feel free to hit the comment box and I will surely get back to you.
Once again thanks for visiting my site,

This article has 2 Comments

  1. Great article, very informative indeed. Rooibos tea is my favorite to drink since it contains no caffeine and also has healing properties. It is a tea that is produced in my Country South Africa and the trademark when it comes to health products. Taste much better than green tea, almost like a sweet flavor.

    1. Christene
      Thanks so much for visiting my site and your kind words,
      Yes Rooibos tea is one of the best teas in the world and it is medicinal too.

      I love to take it It have good flavor and fruity taste.

      Rooibos tea contains various vital minerals like magnesium (important for the nervous system), calcium and manganese (good for the bones ), zinc ( for a healthy metabolism) and iron ( important for blood circulation to the body cells )

      It free from caffeine and low in tannins, which is good for the central nervous system and

      it contains a flavonoid, that aids blood circulation by inhibiting enzymes that contribute to cardiovascular disease and other health benefits

      I will do a post on it just look out for it.

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