Major interaction on record — check this product against your medications before combining. Check your meds →
Dietary supplement

Organic Oolong Tea Bags Ingredients & Drug Interactions

by FGO

Organic Oolong Tea Bags label
See full label image
Other (e.g. Tea Bag) Category: Botanical
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Organic Oolong Tea Bags against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Major

Organic Oolong Tea Bags is a dietary supplement by FGO with 1 active ingredient. Its ingredients are commonly taken for weight management, mental alertness and energy, heart health.Based on those ingredients, 652 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Chinese Oolong Black Tea. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Organic Oolong Tea Bags by FGO

Ask about any prescription or over-the-counter medication and we check it for interactions with Organic Oolong Tea Bags by FGO — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Organic Oolong Tea Bags by FGO

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: Chinese Oolong Black Tea, a traditional beverage made from tea leaves. It's a natural source of caffeine, which is responsible for most of the tea's effects on alertness and its interactions with medications.

There are no inactive filler ingredients in these tea bags.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: mental alertness and energy.
  • We looked for evidence on: Mental alertness.
  • The strongest evidence on file: Oolong Tea is rated "Likely Effective" for Mental alertness (Natural Medicines).

Oolong tea is likely effective for mental alertness — that's the caffeine at work. For osteoporosis, oral cancer, autism spectrum disorder, and chronic obstructive pulmonary disease, the evidence we hold isn't established enough to rate how well it works.

If you're thinking about this tea for one of those conditions, chat with your pharmacist or doctor about what the current research actually shows.

The evidence, ingredient by ingredient Oolong Tea

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Oolong tea is generally well tolerated when you drink it in moderate amounts. Most side effects trace back to caffeine — jitteriness, insomnia, a racing heart, restlessness, and tremors are the common ones.

Serious effects from caffeine are rare but can include heart rhythm problems, chest pain, and convulsions with very large doses. During pregnancy, the safety data suggest possibly unsafe — the guidance advises limiting caffeine and checking with your doctor before regular use.

While breastfeeding, caffeine passes into your milk, so keep intake low and watch for fussiness in your baby. If you're pregnant or nursing, talk with your pharmacist or doctor before making this a daily habit.

Side effects, ingredient by ingredient Oolong Tea

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Oolong Tea.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications; lithium.
  • For scale: 652 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before you brew this tea, double-check if you're taking ephedrine — the combination carries serious risk. Also screen for cimetidine (heartburn), disulfiram (alcohol dependence), dipyridamole (used before stress tests), clozapine (antipsychotic), valproate or phenobarbital (seizure meds), and pentobarbital (sedative).

Use the medication checker below with your complete list.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

Oolong tea is a straightforward source of caffeine and mental alertness for healthy adults who aren't taking medications that interact with it. If you're on ephedrine, heartburn meds, seizure drugs, antipsychotics, or sedatives, check your exact medications with the tool on this page before you start.

Pregnant or breastfeeding? Run it by your pharmacist first.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Feb 23, 2025.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Organic Oolong Tea Bags, straight from the product label.

Brand FGO
Barcode (UPC) X0027ASPPT
Net contents 20 Tea Bag(s); 40 Gram(s)
Market status On market
Date entered into DSLD Feb 23, 2025
DSLD ID 321163
Product type Botanical
Supplement form Other (e.g. Tea Bag)
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Organic
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Organic Oolong Tea Bags by FGO, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Cup Brewed Tea(s)
Maximum serving Sizes:
1 Cup Brewed Tea(s)
Servings per container
20
UPC/BARCODE
X0027ASPPT
IngredientAmount% DV
Calories0 Calorie(s)--
Chinese Oolong Black Tea2000 mg--

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formulation

Eco-Conscious Sourced from China

USDA Organic

Non GMO Project Verified nongmoproject.org

FGO products are sourced from nutrient dense origins around the world. We are committed to delivering the highest quality, certified organic products at a fair price, to help you live healthy and feel good. Sourced from China

Premium Tea Bag: Abacá Hemp Fiber Paper Eco-Conscious: No unnecessary waste from wrapping, strings or staples. Just organic tea in premium bags.

Free of dyes, adhesive, glue and chlorine bleach. Non-GMO.

CCOF Certified Organic Organic is non-GMO & more Certified Organic By: CCOF

CCOF Certified Organic Organic is non-GMO & more

Seals/Symbols

USDA Organic Non GMO Project Verified nongmoproject.org

CCOF Certified Organic Organic is non-GMO & more

General Statements

Healthy feels good

For recipes, giveaways and more visit us at www.FGOrganics.com

Suggested/Recommended/Usage/Directions

Drop a bag into your favorite cup Add 8oz Fresh Boiling Water Steep tea for 3-5 minutes Smile, sip and feel good

Formula

The distinctive, semi-oxidized Oolong Tea falls somewhere between its better-known black and green tea relatives. With a warm and nutty flavor, a soothing sip of our oolong is the perfect way to a mid-day pick-me-up. This bag contains 20 tea bags filled with certified organic, 100% raw oolong tea from China.

Fine Organic Tea: Organic Chinese Oolong Black Tea (Camellia sinensis). Caffeine: Experience a boost of sustainable energy from the naturally-occurring caffeine in this premium tea.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Precautions

Consult with a healthcare provider prior to use if you are currently pregnant, nursing, taking medication, or if you have a medical condition.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Organic Oolong Tea Bags by FGO label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Organic Oolong Tea Bags label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Organic Oolong Tea Bags by FGO

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Cup Brewed Tea(s) Dosage formOther (e.g. Tea Bag) Servings per container20 Amounts shown are per serving.

Chinese Oolong Black Tea

Interacts with
652 drugs
2000 mg per serving Form: Camellia sinensis

Oolong tea is a traditional partially oxidized tea made from the same plant as green and black tea, and it provides caffeine and plant antioxidants. A...

Chinese Oolong Black Tea monograph & interactions
Interaction report

Organic Oolong Tea Bags by FGO Drug Interactions

Want to check YOUR meds against Organic Oolong Tea Bags?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
652Drugs
8 Major 518 Moderate 126 Minor

Ingredients driving the most interactions

Chinese Oolong Black Tea 652

Individual Drug Interactions

The ingredients in Organic Oolong Tea Bags interact with 652 drugs. Click any drug to see the details.

1 of the 1 ingredient in Organic Oolong Tea Bags interact with drugs. Each result below shows which ingredient is responsible. Chinese Oolong Black Tea

Each ingredient & the kinds of drugs it affects

For each ingredient in Organic Oolong Tea Bags with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Chinese Oolong Black Tea37 drug types · 652 drugs

Ephedrine

Theoretically, concomitant use might increase the risk for stimulant adverse effects.
Oolong tea contains caffeine. There is evidence that using ephedrine with caffeine might increase the risk of serious life-threatening or debilitating adverse effects such as hypertension, myocardial infarction, stroke, seizures, and death. Tell patients to avoid taking caffeine with ephedrine and other stimulants.

Likelihood Probable Evidence D
Adenosine (Adenocard)

Theoretically, oolong tea might decrease the vasodilatory effects of adenosine and interfere with its use prior to stress testing.
Oolong tea contains caffeine. Caffeine is a competitive inhibitor of adenosine at the cellular level. However, caffeine does not seem to affect supplemental adenosine because high interstitial levels of adenosine overcome the antagonistic effects of caffeine. It is recommended that methylxanthines such as caffeine, as well as methylxanthine-containing products, be stopped 24 hours prior to pharmacological stress tests. However, methylxanthines appear more likely to interfere with dipyridamole (Persantine) than adenosine-induced stress testing.

Likelihood Possible Evidence B
Anticoagulant/Antiplatelet Drugs

Theoretically, oolong tea might increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Oolong tea contains caffeine. Caffeine is reported to have antiplatelet activity. Theoretically, the caffeine in oolong tea might increase the risk of bleeding when used concomitantly with these agents. However, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Beta-Adrenergic Agonists

Theoretically, large amounts of oolong tea might increase the cardiac inotropic effects of beta-agonists.
Oolong tea contains caffeine. Caffeine can increase cardiac inotropic effects of beta-agonists.

Likelihood Probable Evidence D
Cimetidine (Tagamet)

Theoretically, concomitant use might increase the effects and adverse effects of caffeine in oolong tea.
Oolong tea contains caffeine. Cimetidine can reduce the rate of caffeine clearance by 30% to 50%.

Likelihood Likely Evidence B
Clozapine (Clozaril)

Theoretically, oolong tea might increase the levels and adverse effects of clozapine and acutely exacerbate psychotic symptoms.
Oolong tea contains caffeine. Caffeine can increase the effects and toxicity of clozapine. Caffeine doses of 400-1000 mg per day inhibit clozapine metabolism. Clozapine is metabolized by cytochrome P450 1A2 (CYP1A2). Researchers speculate that caffeine might inhibit CYP1A2. However, there is no reliable evidence that caffeine affects CYP1A2. There is also speculation that genetic factors might make some patients be more sensitive to the interaction between clozapine and caffeine.

Likelihood Possible Evidence B
Cytochrome P450 1A2 (Cyp1A2) Inhibitors

Theoretically, concomitant use might increase the levels and adverse effects of the caffeine in oolong tea.
Oolong tea contains caffeine. Caffeine is metabolized by cytochrome P450 1A2 (CYP1A2),. Theoretically, drugs that inhibit CYP1A2 may decrease the clearance rate of caffeine from oolong tea and increase caffeine levels.

Likelihood Possible Evidence D
Dipyridamole (Persantine)

Theoretically, oolong tea might decrease the vasodilatory effects of dipyridamole and interfere with its use prior to stress testing.
Oolong tea contains caffeine. Caffeine is a methylxanthine that may inhibit dipyridamole-induced vasodilation. It is recommended that methylxanthines such as caffeine, as well as methylxanthine-containing products such as oolong tea, be stopped 24 hours prior to pharmacological stress tests. Methylxanthines appear more likely to interfere with dipyridamole than adenosine-induced stress testing.

Likelihood Probable Evidence B
Disulfiram (Antabuse)

Theoretically, disulfiram might increase the risk of adverse effects from caffeine in oolong tea.
Oolong tea contains caffeine. Disulfiram decreases the clearance and increases the half-life of caffeine.

Likelihood Probable Evidence D
Diuretic Drugs

Theoretically, using oolong tea with diuretic drugs might increase the risk of hypokalemia.
Oolong tea contains caffeine. In excessive amounts, caffeine can reduce potassium levels due to stimulation of the sodium-potassium pump. Diuretics can also cause lower potassium levels.

Likelihood Possible Evidence D
Estrogens

Theoretically, estrogens might increase the levels and adverse effects of caffeine in oolong tea.
Oolong tea contains caffeine. Estrogen inhibits caffeine metabolism.

Likelihood Probable Evidence B
Flutamide (Eulexin)

Theoretically, oolong tea might increase the levels and adverse effects of flutamide.
Oolong tea contains caffeine. In vitro evidence suggests that caffeine can inhibit the metabolism of flutamide.

Likelihood Possible Evidence D
Fluvoxamine (Luvox)

Theoretically, fluvoxamine might increase the levels and adverse effects of caffeine in oolong tea.
Oolong tea contains caffeine. Fluvoxamine reduces caffeine metabolism.

Likelihood Probable Evidence D
Lithium

Theoretically, abrupt oolong tea withdrawal might increase the levels and adverse effects of lithium.
Oolong tea contains caffeine. Abrupt caffeine withdrawal can increase serum lithium levels, worsening lithium tremor.

Likelihood Probable Evidence D
Monoamine Oxidase Inhibitors (Maois)

Theoretically, concomitant use might increase the risk of a hypertensive crisis.
Oolong tea contains caffeine. Caffeine has been shown to inhibit MAO A and B in laboratory studies. Concomitant intake of large amounts of caffeine with MAOIs might precipitate a hypertensive crisis.

Likelihood Possible Evidence D
Nicotine

Theoretically, concomitant use might increase the risk of hypertension.
Oolong tea contains caffeine. Concomitant use of caffeine and nicotine has been shown to have additive cardiovascular effects, including increased heart rate and blood pressure. Blood pressure was increased by 10.8/12.4 mmHg when the agents were used concomitantly.

Likelihood Probable Evidence D
Pentobarbital (Nembutal)

Theoretically, caffeine in oolong tea might decrease the effects of pentobarbital.
Oolong tea contains caffeine. The caffeine in oolong tea might negate the hypnotic effects of pentobarbital.

Likelihood Possible Evidence B
Phenobarbital (Luminal)

Theoretically, oolong tea might reduce the effects of phenobarbital and increase the risk for convulsions.
Oolong tea contains caffeine. Animal research suggests that caffeine can decrease the anticonvulsant activity of phenobarbital. The exact mechanism of this interaction is unclear.

Likelihood Possible Evidence D
Phenylpropanolamine

Theoretically, phenylpropanolamine might increase the risk of hypertension, as well as the levels and adverse effects of caffeine in oolong tea.
Oolong tea contains caffeine. Concomitant use of phenylpropanolamine and caffeine might cause an additive increase in blood pressure. Phenylpropanolamine also seems to increase caffeine serum levels.

Likelihood Probable Evidence B
Phenytoin (Dilantin)

Theoretically, oolong tea might reduce the effects of phenytoin and increase the risk for convulsions.
Oolong tea contains caffeine. Animal research suggests that caffeine can decrease the anticonvulsant activity of phenytoin. The effect does not seem to be related to the seizure threshold-lowering effects of caffeine. However, the exact mechanism of this interaction is unclear.

Likelihood Possible Evidence D
Pioglitazone (Actos)

Theoretically, oolong tea might increase the levels and clinical effects of pioglitazone.
Oolong tea contains caffeine. Animal research suggests that caffeine can modestly increase the maximum concentration, area under the curve, and half-life of pioglitazone, and also reduce its clearance. This increased the antidiabetic effects of pioglitazone. However, the exact mechanism of this interaction is unclear.

Likelihood Possible Evidence D
Riluzole (Rilutek)

Theoretically, concomitant use might increase the levels and adverse effects of both caffeine and riluzole.
Oolong tea contains caffeine. Caffeine and riluzole are both metabolized by cytochrome P450 1A2 (CYP1A2), and concomitant use might reduce metabolism of one or both agents.

Likelihood Possible Evidence D
Stimulant Drugs

Theoretically, concomitant use might increase stimulant adverse effects.
Oolong tea contains caffeine. Due to the CNS stimulant effects of the caffeine constituent of oolong tea, concomitant use with stimulant drugs can increase the risk of adverse effects.

Likelihood Probable Evidence C
Theophylline

Theoretically, oolong tea might increase the levels and adverse effects of theophylline.
Oolong tea contains caffeine. Caffeine decreases theophylline clearance 23% to 29%.

Likelihood Probable Evidence D
Valproate

Theoretically, oolong tea might reduce the effects of valproate and increase the risk for convulsions.
Oolong tea contains caffeine. Animal research suggests that caffeine can decrease the anticonvulsant activity of valproate. However, the exact mechanism of this interaction is unclear.

Likelihood Possible Evidence D
Chinese Oolong Black Tea full monograph & all 37 interactions
The maker

Brand information

Manufacturer and brand details for Organic Oolong Tea Bags, from the product label.

FGO

See all FGO products
Name
FGO
City
Seattle
State
WA
ZipCode
98117
Web Address
www.FGOrganics.com
Pharmacist Counseling Corner

Organic Oolong Tea Bags by FGO: Common Questions

Does Organic Oolong Tea Bags by FGO interact with any medications?
Yes. Based on its ingredients, Organic Oolong Tea Bags has a known interaction with 652 medications, including 8 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Organic Oolong Tea Bags contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is oolong tea safe to drink while I'm pregnant?
The safety data rate it as possibly unsafe during pregnancy. The guidance advises limiting caffeine and checking with your doctor before you make this a regular habit. Because this is a personal medical decision, have that conversation with your pharmacist or OB doctor before starting.
Can I drink oolong tea if I'm breastfeeding?
Caffeine passes into breast milk, so the safety data rate it as possibly safe but with a caution: keep your intake low and watch your baby for signs of fussiness. Talk with your pediatrician or lactation consultant about what amount is right for you.
Will oolong tea help with my osteoporosis or autism?
The evidence we hold on those uses isn't established enough to rate how well oolong tea works. For personalized advice on whether it's right for you, chat with your doctor or pharmacist.
What are the most common side effects?
Most come from the caffeine: insomnia, nervousness, restlessness, a fast heartbeat, and tremors. Serious side effects are rare but can include heart rhythm problems and chest pain with very large amounts.
Can I drink oolong tea every day?
It's generally well tolerated in moderate amounts as a daily beverage for healthy adults — but 'moderate' depends on your total caffeine intake from all sources and your own sensitivity. If you have any medical conditions or take medications, check with your pharmacist first.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Organic Oolong Tea Bags is safe with your meds?

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Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Organic Oolong Tea Bags label
Go deeper

The Full Monographs Behind Organic Oolong Tea Bags’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Oolong Tea

Interacts with 652 drugs

Oolong tea is a traditional partially oxidized tea made from the same plant as green and black tea, and it provides caffeine and plant antioxidants. As a beverage it is generally considered...

Read the full Oolong Tea monograph →
Sources

Sources & How We Checked

Organic Oolong Tea Bags's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 112 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Oolong Tea 112 references
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  2. Harder S, Fuhr U, Staib AH, Wolff T. Ciprofloxacin-caffeine: a drug interaction established using in vivo and in vitro investigations. Am J Med 1989;87:89S-91S. PubMed
  3. Carbo M, Segura J, De la Torre R, et al. Effect of quinolones on caffeine disposition. Clin Pharmacol Ther 1989;45:234-40. PubMed
  4. Healy DP, Polk RE, Kanawati L, et al. Interaction between oral ciprofloxacin and caffeine in normal volunteers. Antimicrob Agents Chemother 1989;33:474-8. PubMed
  5. Mester R, Toren P, Mizrachi I, et al. Caffeine withdrawal increases lithium blood levels. Biol Psychiatry 1995;37:348-50. PubMed
  6. Jefferson JW. Lithium tremor and caffeine intake: two cases of drinking less and shaking more. J Clin Psychiatry 1988;49:72-3.
  7. Merhav H, Amitai Y, Palti H, Godfrey S. Tea drinking and microcytic anemia in infants. Am J Clin Nutr 1985;41:1210-3.
  8. Joeres R, Klinker H, Heusler H, et al. Influence of mexiletine on caffeine elimination. Pharmacol Ther 1987;33:163-9. PubMed
  9. Vahedi K, Domingo V, Amarenco P, Bousser MG. Ischemic stroke in a sportsman who consumed MaHuang extract and creatine monohydrate for bodybuilding. J Neurol Neurosurg Psychiatr 2000;68:112-3.
  10. Wakabayashi K, Kono S, Shinchi K, et al. Habitual coffee consumption and blood pressure: A study of self-defense officials in Japan. Eur J Epidemiol 1998;14:669-73. PubMed
  11. Hodgson JM, Puddey IB, Burke V, et al. Effects on blood pressure of drinking green and black tea. J Hypertens 1999;17:457-63. PubMed
  12. Rapuri PB, Gallagher JC, Kinyamu HK, Ryschon KL. Caffeine intake increases the rate of bone loss in elderly women and interacts with vitamin D receptor genotypes. Am J Clin Nutr 2001;74:694-700. PubMed
  13. The National Toxicology Program (NTP). Caffeine. Center for the Evaluation of Risks to Human Reproduction (CERHR). Available at: http://cerhr.niehs.nih.gov/common/caffeine.html.
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  15. Eskenazi B. Caffeine—filtering the facts. N Engl J Med 1999;341:1688-9. PubMed
  16. Fernandes O, Sabharwal M, Smiley T, et al. Moderate to heavy caffeine consumption during pregnancy and relationship to spontaneous abortion and abnormal fetal growth: a meta-analysis. Reprod Toxicol 1998;12:435-44. PubMed
  17. Pollock BG, Wylie M, Stack JA, et al. Inhibition of caffeine metabolism by estrogen replacement therapy in postmenopausal women. J Clin Pharmacol 1999;39:936-40. PubMed
  18. DiPiro JT, Talbert RL, Yee GC, et al; eds. Pharmacotherapy: A pathophysiologic approach. 4th ed. Stamford, CT: Appleton & Lange, 1999.
  19. Nurminen ML, Niittynen L, Korpela R, Vapaatalo H. Coffee, caffeine and blood pressure: a critical review. Eur J Clin Nutr 1999;53:831-9. PubMed
  20. Dews PB, Curtis GL, Hanford KJ, O'Brien CP. The frequency of caffeine withdrawal in a population-based survey and in a controlled, blinded pilot experiment. J Clin Pharmacol 1999;39:1221-32. PubMed
  21. FDA. Proposed rule: dietary supplements containing ephedrine alkaloids. Available at: www.verity.fda.gov (Accessed 25 January 2000).
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  24. Hagg S, Spigset O, Mjorndal T, Dahlqvist R. Effect of caffeine on clozapine pharmacokinetics in healthy volunteers. Br J Clin Pharmacol 2000;49:59-63. PubMed
  25. Watson JM, Jenkins EJ, Hamilton P, et al. Influence of caffeine on the frequency and perception of hypoglycemia in free-living patients with type 1 diabetes. Diabetes Care 2000;23:455-9. PubMed
  26. Lloyd T, Johnson-Rollings N, Eggli DF, et al. Bone status among postmenopausal women with different habitual caffeine intakes: a longitudinal investigation. J Am Coll Nutr 2000;19:256-61. PubMed
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  29. Haller CA, Benowitz NL. Adverse cardiovascular and central nervous system events associated with dietary supplements containing ephedra alkaloids. N Engl J Med 2000;343:1833-8. PubMed
  30. Ferrini RL, Barrett-Connor E. Caffeine intake and endogenous sex steroid levels in postmenopausal women. The Rancho Bernardo Study. Am J Epidemiol 1996:144:642-4. PubMed
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  32. Horner NK, Lampe JW. Potential mechanisms of diet therapy for fibrocystic breast conditions show inadequate evidence of effectiveness. J Am Diet Assoc 2000;100:1368-80. PubMed
  33. Bracken MB, Triche EW, Belanger K, et al. Association of maternal caffeine consumption with decrements in fetal growth. Am J Epidemiol 2003;157:456-66.. PubMed
  34. McGowan JD, Altman RE, Kanto WP Jr. Neonatal withdrawal symptoms after chronic maternal ingestion of caffeine. South Med J 1988;81:1092-4.. PubMed
  35. Massey LK. Is caffeine a risk factor for bone loss in the elderly? Am J Clin Nutr 2001;74:569-70. PubMed
  36. Dreher HM. The effect of caffeine reduction on sleep quality and well-being in persons with HIV. J Psychosom Res 2003;54:191-8.. PubMed
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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