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13 hours 35 min ago - Caffeine and Sleep
2 days 20 hours ago - Thanks for the advice. Good
3 days 4 hours ago - Yes, this is definitely
3 days 4 hours ago - Heavy withdraw
3 days 13 hours ago - "coffee implies cigarettes"
4 days 6 hours ago - caffeine problem
4 days 20 hours ago - caffeine withdrawal
5 days 3 hours ago - Good luck trying to treat
1 week 23 hours ago - Exploding Headache
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Is it true that tea has no caffeine/What is theine, theobromine, etc?
From "Principles of biochemistry", Horton and al, 1993.
Caffeine is sometimes called "theine" when it's in tea. This is probably due to an ancient misconception that the active constituent is different. Theophylline is present only in trace amounts. It is more diuretic, more toxic and less speedy.
- Caffeine
- 1,3,7-trimethylxanthine
- Theophylline
- 1,3-dimethylxanthine
- Theobromine
- 3,7-dimethylxanthine
Coffee and tea contain caffeine and theophylline, respectively, which are methylated purine derivatives that inhibit cAMP phosphodiesterase. In the presence of these inhibitors, the effects of cAMP, and thus the stimulatory effects of the hormones that lead to its production, are prolonged and intensified.
Theobromine and theophylline are two dimethylxanthines that have two rather than three methyl groups. Theobromine is considerably weaker than caffeine and theophylline, having about one tenth the stimulating effect of either.
Theobromine is found in cocoa products, tea (only in very small amounts) and kola nuts, but is not found in coffee. In cocoa, its concentration is generally about 7 times as great as caffeine. Although, caffeine is relatively scarce in cocoa, its mainly because of theobromine that cocoa is "stimulating".
Theophylline is found in very small amounts in tea, but has a stronger effect on the heart and breathing than caffeine. For this reason it is often the drug of choice in home remedies for treating asthma bronchitis and emphysema. The theophylline found in medicine is made from extracts from coffee or tea.
Comments
caffeine withdrawl
I have been drinking iced tea.. very strong, iced tea every day for a long time.. years. I'm also a coke drinker, but last week I decided to stop doing caffeine all together.. I was having trouble staying asleep.. falling asleep was easy, staying asleep was a big problem. I've gotten a grip on the headaches, they're under control, but I've noticed the past couple days that all of my muscles, neck, legs, back, hips, even stomach muscles, everything has become so stiff. Also I've been a bit constipated.. I have always had regular bowel movements, no stress.. so I don't know. Could the lack of caffeine and maybe sugar cause any of these things to occur? I've been drinking nothing but water since I stopped caffeine, just trying to flush my system clean.. so any ideas?
caffeine withdrawal
Yes, everything you mentioned could be caused by caffeine withdrawal - note the "could be", not "is". If you continue, the symptoms should abate along with the headaches. I went through a similar detox about four years ago, and had similar symptoms.
Hi! I suffer from
Hi! I suffer from constipation also and after telling this to my fiance he told me that he drinks one Coca-Cola a day and it keeps him regular. I have tried this when I get really constipated and I think he's right, I think it helps me to occasionally drink a Coca-Cola. I also enjoy Kellogg's All-Bran Fiber Drink Mix. They make Pink Lemonade and Iced Tea. I don't know about the caffeine content in either, but they do have 10g of Fiber per serving (40% DV). As for the body pain, I have no suggestions. I used to work out at a gym - basically just run on a tread mill and do curl-ups, but I think that also helped with my constipation and maybe it would help with the muscle pains to get them nice and stretched out every day.
Hey I'm fourteen and I have
Hey I'm fourteen and I have been drinking alot of AriZona Green Tea lately. And yesturday and today my eyes have been really dialated and I have terrible sensitivity to light. So much so, i was wasn't able to be outside playing kickball in PE. I wear contacts but i don't think this was the problem for i haven't worn them in a few days. I'm trying to figure out what is causing it. Please comment back if you have any ideas.
I'm just guessing but I think
I'm just guessing but I think the light sensativity has to do with your contacts and not the ice tea. That happened to be when I was younger so I know exactly what you mean when you say "terrible". Mine was due to an eye infection from sleeping in my lenses. If it continues, you might want to see an Opthamologist.
Withdrawal From Tea?
Can you get withdrawal symptoms from herbal tea? I drink a lot of camomile. I haven't had any in the last 3 days. Yesterday, when I thought about making myself a cup and realized I was out - shortly after I got a really bad headache. Same thing happened today. It seems like I trigger the headaches myself when I think of having a cup of tea. Are my headaches being caused by something else or am I a tea addict?
Withdrawal From Tea?
Oh, and one more thing...my headaches carry on ALL day, some moments less painful than others.
Herbal tea: any caffeine or dimethylxanthenes?
Do various "herbal teas" have caffeine-like effects on the heart? How about decaffeinated "regular" teas?
Caffeine in herbal tea
Some herbal teas are simply Ceylon tea with flavour added. Other herbal teas may have varying amounts of caffeine.
For a truly caffeine free tea, which is quote common in South Africa and not regarded as a "herbal" tea by the locals there, try rooibos tea (fairly easy to get outside South Africa) or heuningbos tea (a little more difficult to get).
http://en.wikipedia.org/wiki/Rooibos
http://en.wikipedia.org/wiki/Honeybush
PaulineI was wondering
Pauline
I was wondering about decaffeinated tea as I am starting to have the same dizzy effects after drinking it. Anyone know?