Drink Green Tea Without the Side Effects

Though green tea has some health benefits, it can also cause side effects such as nervousness and upset stomach. Some of the problems are due to the caffeine in the tea. Other problems are due to certain substances in the tea. This article will help you navigate when and how much tea you can have per day, even if you do suffer from some of the side effects.

Steps

Avoiding Caffeine Problems

  1. Know the caffeine content. Brewed green tea can contain anywhere from 24 to 45 milligrams per 8 ounce serving. As a comparison, an 8-ounce cup of coffee can range from 95 to 200 milligrams, while Coca-Cola has 23 to 35 milligrams in 12 ounces.[1],[2]
  2. Understand the side effects of drinking too much caffeine. Too much caffeine can cause an irregular heartbeat, heartburn, irritability, nervousness, and much more.[3]
    • Caffeine can also cause problems with blood sugar levels for diabetics, make diarrhea worse, and also cause issues for those with irritable bowel syndrome.[3]
    • The caffeine in green tea can cause calcium to leave your system that your body needs to create strong bones.[3] If you have osteoporosis or are at risk for bone problems, green tea can be a problem for you.[3]
  3. Know your upper limit. The main way to avoid the problems of too much caffeine is to keep your consumption low. You should top out at 5 cups a day to avoid problems.[2]
  4. Keep it to fewer cups if you're sensitive to caffeine. If you know you are sensitive to caffeine, choose a decaffeinated version or drink green tea in moderation.
  5. Drink 2 cups or less if you are pregnant. Green tea, because of it's caffeine level, can be unsafe for pregnant women and their babies. It can even lead to miscarriage if it is consumed in high doses. Always check with your doctor if you're unsure about consuming caffeinated beverages while pregnant.[3]
    • If calcium is a concern for you, you should also limit your green tea intake to 2 to 3 cups a day.[3] In addition, you take calcium supplements. Calcium supplements may offset the effects to some extent.[3]

Avoiding Upset Stomach

  1. Know the risks. The tannins in green tea can upset your stomach because they cause your stomach to produce more acid.[4]
  2. Know who's at risk. The people at highest risk for this problem are those with stomach problems such as acid reflux.[4] For instance, if you already have heartburn on a regular basis, green tea can worsen the problem.
  3. Drink green tea with meals. Green tea mainly causes problems if you drink it before eating anything. Therefore, wait until you've started your meal to start drinking it.[4]
  4. Drink green tea with milk. Milk can help soothe stomach acid, so pouring a little in your tea can help with this problem.[4]
  5. Try an antacid. An antacid such as calcium carbonate (Tums) can soothe your stomach if you've gotten an upset stomach from green tea.[5]

Avoiding Green Tea with Anemia and Glaucoma

  1. Understand the problem with iron. Green tea can decrease your body's ability to absorb iron.[3] The catechins in the tea block some of the iron from being absorbed in your body.[4]
    • Know the risks. If you have anemia, drinking green tea can make it worse.[3]
    • Iron-deficiency anemia is caused by not having enough iron in the blood, which in turn lowers either the red blood cells or hemoglobin. Anemia can cause fatigue because not enough oxygen is being carried throughout your body. One cause of anemia is excessive menstrual bleeding. If you think you may be anemic, talk to your doctor about taking an iron supplement and eating iron-rich foods.
  2. Know the problem with glaucoma. Green tea can increase pressure in the eye for an hour or more.[3]
    • Know who's at risk. If you suffer from glaucoma, you can increase the risk of the disease.
    • Glaucoma is an eye disease. It affects the optic nerve. It can impair your vision over time.[6]
  3. Avoid drinking green tea with meals if you have an iron deficiency. Instead, drink your tea between meals to give your body a chance to absorb the iron.[7]
    • Eat foods rich in iron and vitamin C. Iron can help with anemia, while vitamin C increases your body's ability to take in iron.[8]
    • Iron-rich foods include meats, beans, and greens, to name a few.[8]
    • Foods rich in vitamin C are things like citrus fruits, kiwi, strawberries, broccoli, and peppers.[8]
  4. Avoid green tea altogether with glaucoma. Green tea increases the pressure in your eye within 30 minutes of drinking it, and the effects can last beyond an hour and a half of drinking the tea.[6]

Understanding Medication Interactions

  1. Know the risks. Certain medications react with green tea, and they can have adverse affects.[9]
  2. Don't drink green tea with ephedrine. Ephedrine is a medication that can help with breathing.[10] However, when taken with green tea, it can cause tremors, nervousness,[9] and insomnia because both green tea and ephedrine are stimulants.[3]
  3. Avoid drinking green tea with drugs like clozapine and lithium. Green tea can reduce the effectiveness of these drugs.[9] This side effect is also a problem with dipyridamole.[3]
  4. Avoid green tea with monoamine oxidase inhibitors (MAOIs) and phenylpropanolamine. This combination can cause blood pressure to skyrocket, so this combination is best avoided. With phenylpropanolamine, green tea can also induce mania.[9]
  5. Avoid drinking green tea with antibiotics if you're susceptible to caffeine. Antibiotics can decrease your body's ability to break down caffeine, making the effects last longer.[3] This side effect can also happen with cimetidine, birth control, fluvoxamine, and disulfiram.[3]

Related Articles

Sources and Citations

  1. ↑ http://www.mayoclinic.org/healthy-living/nutrition-and-healthy-eating/in-depth/caffeine/art-20049372
  2. ↑ 2.0 2.1 http://www.mayoclinic.org/healthy-living/nutrition-and-healthy-eating/in-depth/caffeine/art-20049372?pg=2
  3. ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 http://www.webmd.com/vitamins-supplements/ingredientmono-960-green%20tea.aspx?activeingredientid=960&activeingredientname=green%20tea
  4. ↑ 4.0 4.1 4.2 4.3 4.4 http://www.green-tea-guide.com/green-tea-side-effects.html
  5. ↑ http://www.webmd.com/digestive-disorders/tc/nonprescription-medications-and-products-antacids-and-acid-reducers
  6. ↑ 6.0 6.1 https://www.nei.nih.gov/health/glaucoma/glaucoma_facts
  7. ↑ http://www.webmd.com/a-to-z-guides/understanding-anemia-basics
  8. ↑ 8.0 8.1 8.2 http://www.mayoclinic.org/diseases-conditions/iron-deficiency-anemia/basics/prevention/con-20019327
  9. ↑ 9.0 9.1 9.2 9.3 http://umm.edu/health/medical/altmed/herb-interaction/possible-interactions-with-green-tea
  10. ↑ http://www.drugs.com/ephedrine.html

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