Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

L-Theanine Liquid Ingredients & Drug Interactions

by NuMedica

L-Theanine Liquid label
See full label image
Liquid Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking L-Theanine Liquid 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: Moderate

L-Theanine Liquid is a dietary supplement by NuMedica with 3 active ingredients. Its ingredients are commonly taken for anxiety and stress, relaxation and calm, sleep support.Based on those ingredients, 1,186 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Chamomile (Matricaria recutita) (flower) extract, L-Theanine, Stevia (Stevia rebaudiana) (leaf) extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against L-Theanine Liquid by NuMedica

Ask about any prescription or over-the-counter medication and we check it for interactions with L-Theanine Liquid by NuMedica — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of L-Theanine Liquid by NuMedica

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 Aug 13, 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 3 of its 3 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This liquid supplement contains 3 active ingredients. L-theanine is an amino acid from tea that's studied for its effects on the brain and relaxation.

Chamomile flower extract is traditionally used as a calming herb. Stevia leaf extract serves as a natural sweetener.

The product also contains inactive ingredients—purified water, vegetable glycerin, gum arabic, natural lemon flavor, and malic acid—that act as the liquid base, thickener, and flavoring.

Does it work?

Not established
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
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use.

Why this rating?
  • The label markets this product for: relaxation, stress, and sleep support.
  • We looked for evidence on: Anxiety, Generalized anxiety disorder (GAD), Insomnia, Stress, Sleep quality, Calm — and 1 related terms.
  • The closest evidence on file: German Chamomile is rated "Insufficient Reliable Evidence To Rate" for Anxiety (Natural Medicines).
  • Also on file: German Chamomile is rated "Insufficient Reliable Evidence To Rate" for Generalized anxiety disorder (GAD), Insomnia.
  • Also on file: Theanine is rated "Insufficient Reliable Evidence To Rate" for Generalized anxiety disorder (GAD), Insomnia, Stress.

For L-theanine, the evidence supports it as possibly effective for cognitive function; however, there isn't enough reliable evidence to rate it for age-related cognitive decline, Alzheimer disease, generalized anxiety, or obsessive-compulsive disorder. For chamomile and stevia, the evidence we hold shows insufficient reliable evidence to rate them for the uses listed—hay fever, anxiety, ADHD, sexual dysfunction, diabetes, high blood pressure, or weight loss.

That doesn't mean they don't work; it means the science isn't established enough in our data to call them effective.

The evidence, ingredient by ingredient Theanine German Chamomile Stevia

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 3 of the 3 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 3 of 3.
  • General safety write-ups exist for 3 of 3.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

L-theanine is generally well tolerated in healthy adults for short-term use, though long-term safety hasn't been well studied. It may cause headaches, drowsiness, or increased dream activity.

Chamomile is generally well tolerated but can trigger allergic reactions in people sensitive to ragweed and related plants; in rare cases, severe reactions like anaphylaxis have been reported. Stevia appears well tolerated, with most minor side effects—bloating, dizziness, headache, muscle pain, nausea, numbness—resolving after the first week.

Regarding pregnancy, there isn't enough safety data for L-theanine or chamomile, so they're best avoided unless your doctor approves. Stevia safety data in pregnancy isn't on file.

For breastfeeding, L-theanine has insufficient data, and while stevia in food amounts is likely fine, high-dose supplements lack safety data. Talk with your doctor or pharmacist about whether this product is right for you if you're pregnant or breastfeeding.

Side effects, ingredient by ingredient Theanine German Chamomile Stevia

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 3 of the 3 matched ingredients can interact with medications — Stevia, German Chamomile, Theanine.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications; lithium.
  • For scale: 1,187 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 start this product, check with your doctor or pharmacist if you take any antihypertensive drugs (blood pressure medications)—both L-theanine and stevia may lower your pressure further. If you're on warfarin or another blood thinner, lithium (a mood stabilizer), oral contraceptives, hormone replacement therapy, tamoxifen, or drugs metabolized by CYP2D6, CYP2C9, or CYP3A4 liver enzymes, chamomile poses documented Moderate-risk interactions.

CNS depressants (sedating drugs) and serotonergic drugs (like antidepressants) may have additive effects with L-theanine, though clinical relevance is unclear. Diabetes medications may carry additional risk with stevia.

Use the checker on this page to confirm your specific medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

This product may help with cognitive function based on its L-theanine content, but evidence for other uses isn't established in our data. The biggest concern is that both L-theanine and chamomile can lower blood pressure, so if you take antihypertensive drugs, you'll want to check with your doctor or pharmacist first.

Chamomile also interacts with blood thinners, birth control, and several drug-metabolizing enzymes, making it important to clear this with your own healthcare provider before starting, especially if you're on any prescription medication.

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

Assessment coverage: 3 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 25, 2020.

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 L-Theanine Liquid, straight from the product label.

Brand NuMedica
Barcode (UPC) 812527013070
Net contents 2 fl. Oz.; 60 mL
Market status On market
Date entered into DSLD Jan 25, 2020
DSLD ID 213570
Product type Other Combinations
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free
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 L-Theanine Liquid by NuMedica, 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:
40 Drop(s)
Maximum serving Sizes:
40 Drop(s)
Servings per container
30
UPC/BARCODE
812527013070
IngredientAmount% DV
L-Theanine200 mg--
Chamomile (Matricaria recutita) (flower) extract40 mg--
Stevia (Stevia rebaudiana) (leaf) extract12.5 mg--

Other ingredients: purified Water, Vegetable Glycerin, Gum Arabic, natural Lemon flavor, Malic Acid

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.
Suggested/Recommended/Usage/Directions

Directions: Take two droppers (40 drops) 1-2 times per day mixed in water or as directed by your healthcare practitioner.

Formula

L-Theanine is a naturally occurring, unique amino acid found in green tea leaves. NuMedica's L-Theanine is Suntheanine, the most respected source and the one which has been used in scientific studies.

Featuring Suntheanine

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

Caution: Keep out of reach of children.

Storage

Storage: Keep tightly closed in a cool, dry place.

Formulation

This formula meets or exceeds cGMP quality standards.

Does Not Contain: Milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy, artificial colors, sweeteners or preservatives.

Professional quality formulas

Relaxation & stress support

GF Gluten-free

Vegetarian

General Statements

Advancing nutrition

Produced and packaged in the US.

FDA Statement of Identity

Dietary Supplement

Brand IP Statement(s)

Suntheanine is a registered trade name for pure L-Theanine from Taiyo Kagaku Co. Ltd., Tokkaichi, Japan.

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

See for yourself

L-Theanine Liquid by NuMedica label

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

L-Theanine Liquid 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 L-Theanine Liquid by NuMedica

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size40 Drop(s) Dosage formLiquid Servings per container30 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

L-Theanine

Interacts with
565 drugs
200 mg per serving

Theanine (usually L-theanine) is an amino acid found naturally in tea leaves that many people take to feel calmer and less stressed without strong dro...

L-Theanine monograph & interactions

Chamomile (Matricaria recutita) (flower) extract

Interacts with
960 drugs
40 mg per serving

German chamomile is a widely used herbal remedy taken mainly as a tea for calming, sleep, and digestive complaints. Early research suggests possible b...

Chamomile (Matricaria recutita) (flower) extract monograph & interactions

Stevia (Stevia rebaudiana) (leaf) extract

Interacts with
259 drugs
12.5 mg per serving

Stevia is a plant-based, calorie-free sweetener that is widely used as a sugar alternative and is considered safe in normal food amounts by major regu...

Stevia (Stevia rebaudiana) (leaf) extract monograph & interactions

Other (inactive) ingredients: Purified Water, Vegetable Glycerin, Gum Arabic, Natural Lemon flavor, Malic Acid. These complete the product’s ingredient list but are not active constituents.

Interaction report

L-Theanine Liquid by NuMedica Drug Interactions

Want to check YOUR meds against L-Theanine Liquid?

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
1,186Drugs
1,044 Moderate 142 Minor

Ingredients driving the most interactions

Chamomile (Matricaria recutita) (flower) extract 960
L-Theanine 565
Stevia (Stevia rebaudiana) (leaf) extract 259

Individual Drug Interactions

The ingredients in L-Theanine Liquid interact with 1,186 drugs. Click any drug to see the details.

3 of the 3 ingredients in L-Theanine Liquid interact with drugs. Each result below shows which ingredient is responsible. Chamomile (Matricaria recutita) (flower) extract L-Theanine Stevia (Stevia rebaudiana) (leaf) extract

Each ingredient & the kinds of drugs it affects

For each ingredient in L-Theanine Liquid with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Chamomile (Matricaria recutita) (flower) extract9 drug types · 960 drugs

Cns Depressants

Theoretically, German chamomile might have additive effects when used with CNS depressants.
German chamomile has mild sedative effects. Theoretically, concomitant use with drugs with sedative properties can cause additive effects and side effects.

Likelihood Possible Evidence D
Contraceptive Drugs

Theoretically, large amounts of German chamomile might reduce the effectiveness of oral contraceptives.
In vitro, German chamomile has demonstrated antiestrogenic activity. Theoretically, concomitant use of large amounts of German chamomile might interfere with contraceptive drugs through competition for estrogen receptors.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, German chamomile might inhibit CYP2C9 and increase levels of drugs metabolized by these enzymes.
In vitro evidence shows that German chamomile might inhibit CYP2C9. So far, this interaction has not been reported in humans. However, there might be an increase in the levels of drugs metabolized by CYP2C9 in patients taking German chamomile.

Likelihood Possible Evidence D
Cytochrome P450 2D6 (Cyp2D6) Substrates

Theoretically, German chamomile might inhibit CYP2D6 and increase levels of drugs metabolized by these enzymes.
In vitro evidence shows that German chamomile might inhibit CYP2D6. So far, this interaction has not been reported in humans. However, there might be an increase in the levels of drugs metabolized by CYP2D6 in patients taking German chamomile.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, German chamomile might inhibit CYP3A4 and increase levels of drugs metabolized by these enzymes.
In vitro evidence shows that German chamomile might inhibit CYP3A4. So far, this interaction has not been reported in humans. However, there might be an increase in the levels of drugs metabolized by CYP3A4 in patients taking German chamomile.

Likelihood Possible Evidence D
Estrogens

Theoretically, large amounts of German chamomile might reduce the effectiveness of estrogens.
In vitro, German chamomile has demonstrated antiestrogenic activity. Theoretically, large amounts of German chamomile might interfere with hormone replacement therapy through competition for estrogen receptors.

Likelihood Possible Evidence D
Tamoxifen (Nolvadex)

Theoretically, large amounts of German chamomile might interfere with the activity of tamoxifen.
In vitro, German chamomile has demonstrated antiestrogenic activity.

Likelihood Possible Evidence D
Warfarin (Coumadin)

German chamomile might increase the effects of warfarin and increase the risk of bleeding.
In one case, a 70-year-old female taking warfarin developed retroperitoneal hematoma and bilateral recti muscle bleeding along with an INR of 7.9 following ingestion of German chamomile tea 4-5 cups daily and use of a topical chamomile-based lotion applied 4-5 times daily.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, German chamomile might inhibit CYP1A2 and increase levels of drugs metabolized by these enzymes.
In vitro and animal research shows that German chamomile might inhibit CYP1A2. So far, this interaction has not been reported in humans. However, there might be an increase in the levels of drugs metabolized by CYP1A2 in patients taking German chamomile.

Likelihood Possible Evidence D
Chamomile (Matricaria recutita) (flower) extract full monograph & interactions

L-Theanine3 drug types · 565 drugs

Antihypertensive Drugs

Theanine might lower blood pressure, potentiating the effects of antihypertensive drugs.
Animal research shows that theanine can lower blood pressure in spontaneously hypertensive animals. Theoretically, concomitant use of theanine and antihypertensive drugs might potentiate the antihypertensive activity.

Likelihood Possible Evidence D
Cns Depressants

Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants. However, it is unclear if this concern is clinically relevant.
Theoretically, theanine may compete with glutamate and/or increase plasma gamma-aminobutyric acid (GABA) levels, which could cause CNS depression. In one clinical study, some subjects taking oral theanine reported drowsiness.

Likelihood Unlikely Evidence D
Serotonergic Drugs

Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting. Some studies suggest it can increase serotonin levels in the brain while others report that it may decrease them. Nevertheless, there have been no reports of l-theanine being a causative agent in serotonergic-related side effects or serotonin syndrome.

Likelihood Unlikely Evidence C
L-Theanine full monograph & interactions

Stevia (Stevia rebaudiana) (leaf) extract3 drug types · 259 drugs

Lithium

Theoretically, stevia might decrease clearance and increase levels of lithium.
Animal research suggests that stevia extracts might have diuretic activity. Theoretically, increased reabsorption of lithium along with sodium might reduce excretion and increase levels of lithium.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, stevia might increase the risk for hypoglycemia when combined with antidiabetes drugs.
Preliminary clinical research in patients with type 2 diabetes suggests that taking a single dose of stevia extract 1000 mg reduces postprandial blood glucose levels when taken with a meal. However, other clinical research in patients with type 1 or type 2 diabetes suggests that taking stevioside 250 mg three times daily does not significantly affect blood glucose levels or glycated hemoglobin (HbA1C) after three months of treatment.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, combining stevia or stevia constituents with antihypertensive agents might increase the risk of hypotension.
Stevia extract and stevioside might lower blood pressure in patients with hypertension. However, other clinical research suggests that stevioside does not significantly lower blood pressure in patients with hypertension.

Likelihood Possible Evidence D
Stevia (Stevia rebaudiana) (leaf) extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for L-Theanine Liquid, from the product label.

NuMedica

See all NuMedica products
Name
NuMedica LLC
Street Address
9503 E. 55th Place
City
Tulsa
State
OK
ZipCode
74145
Phone Number
800.869.8100
Web Address
www.numedica.com
Pharmacist Counseling Corner

L-Theanine Liquid by NuMedica: Common Questions

Does L-Theanine Liquid by NuMedica interact with any medications?
Yes. Based on its ingredients, L-Theanine Liquid has a known interaction with 1,186 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
L-Theanine Liquid contains 3 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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.
Can I take this if I'm pregnant?
There isn't enough safety data for L-theanine or chamomile in pregnancy, so the safety data advises against them. Stevia safety data in pregnancy isn't on file. Talk with your doctor or pharmacist about whether this product is right for you if you're pregnant.
Can I take this while breastfeeding?
L-theanine lacks enough safety data, and chamomile safety data is limited—check with your doctor or pharmacist before using while breastfeeding. Stevia in food amounts is probably fine, but high-dose supplements from this product aren't well studied.
What side effects should I watch for?
L-theanine may cause headaches, drowsiness, or increased dream activity. Chamomile can trigger allergic reactions, especially in people sensitive to ragweed; in rare cases, severe reactions are possible. Stevia may cause bloating, dizziness, headache, muscle pain, nausea, or numbness—most resolve after the first week.
Does this product actually work for anxiety?
L-theanine is studied for cognitive function and is possibly effective for that, but there isn't enough reliable evidence to say whether it works for anxiety. Chamomile is traditionally used to calm, but the evidence we hold shows insufficient evidence to rate it for anxiety.
Is there anything in this besides the three active ingredients?
Yes. The product also contains purified water, vegetable glycerin, gum arabic, natural lemon flavor, and malic acid as inactive ingredients that make up the liquid base and flavor.
Why does this have so many drug interactions if it's a supplement?
Chamomile contains compounds that can slow how your liver processes certain medications, and both L-theanine and stevia can affect blood pressure. These effects are real even in a supplement, which is why it's important to check your specific medications before starting.

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

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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.

L-Theanine Liquid label
Go deeper

The Full Monographs Behind L-Theanine Liquid’s Ingredients

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

Herb & supplement monograph

Theanine

Interacts with 565 drugs

Theanine (usually L-theanine) is an amino acid found naturally in tea leaves that many people take to feel calmer and less stressed without strong drowsiness. Early research suggests it may...

Read the full Theanine monograph → Herb & supplement monograph

German Chamomile

Interacts with 960 drugs

German chamomile is a widely used herbal remedy taken mainly as a tea for calming, sleep, and digestive complaints. Early research suggests possible benefits for mild anxiety and some skin o...

Read the full German Chamomile monograph → Herb & supplement monograph

Stevia

Interacts with 259 drugs

Stevia is a plant-based, calorie-free sweetener that is widely used as a sugar alternative and is considered safe in normal food amounts by major regulators. Purified stevia extracts have a...

Read the full Stevia monograph →
Sources

Sources & How We Checked

L-Theanine Liquid'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 31 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.

Theanine 6 references
  1. Yokogoshi H, Kobayashi M. Hypotensive effect of gamma-glutamylethylamide in spontaneously hypertensive rats. Life Sci 1998;62:1065-8.
  2. Haskell, C. F., Kennedy, D. O., Milne, A. L., Wesnes, K. A., and Scholey, A. B. The effects of L-theanine, caffeine and their combination on cognition and mood. Biol.Psychol. 2008;77(2):113-122. PubMed
  3. Yokogoshi, H., Kato, Y., Sagesaka, Y. M., Takihara-Matsuura, T., Kakuda, T., and Takeuchi, N. Reduction effect of theanine on blood pressure and brain 5-hydroxyindoles in spontaneously hypertensive rats. Biosci.Biotechnol.Biochem. 1995;59(4):615-618. PubMed
  4. Lyon MR, Kapoor MP, Juneja LR. The effects of L-theanine (Suntheanine®) on objective sleep quality in boys with attention deficit hyperactivity disorder (ADHD): a randomized, double-blind, placebo-controlled clinical trial. Altern Med Rev. 2011;16(4):348-
  5. Hidese S, Ota M, Wakabayashi C, et al. Effects of chronic l-theanine administration in patients with major depressive disorder: an open-label study. Acta Neuropsychiatr 2017;29(2):72-9.
  6. Tsuchiya T, Honda H, Oikawa M, et al. Oral administration of the amino acids cystine and theanine attenuates the adverse events of S-1 adjuvant chemotherapy in gastrointestinal cancer patients. Int J Clin Oncol 2016;21(6):1085-90. PubMed

See these in context on the Theanine monograph →

German Chamomile 15 references
  1. Subiza J, Subiza JL, Hinojosa M, et al. Anaphylactic reaction after the ingestion of chamomile tea; a study of cross-reactivity with other composite pollens. J Allergy Clin Immunol 1989;84:353-8. PubMed
  2. Budzinski JW, Foster BC, Vandenhoek S, Arnason JT. An in vitro evaluation of human cytochrome P450 3A4 inhibition by selected commercial herbal extracts and tinctures. Phytomedicine 2000;7:273-82. PubMed
  3. Viola H, Wasowski C, Levi de Stein M, et al. Apigenin, a component of Matricaria recutita flowers, is a central benzodiazepine receptors-ligand with anxiolytic effects. Planta Med 1995;61:213-6.
  4. van Ketel WG. Allergy to Matricaria chamomilla. Contact Dermatitis 1982;8:143. PubMed
  5. van Ketel WG. Allergy to Matricaria chamomilla. Contact Dermatitis 1987;16:50-1. PubMed
  6. Hormann HP, Korting HC. Evidence for the efficacy and safety of topical herbal drugs in dermatology: part I: anti-inflammatory agents. Phytomedicine 1994;1:161-71. PubMed
  7. Avallone R, Zanoli P, Puia G, et al. Pharmacological profile of apigenin, a flavonoid isolated from Matricaria chamomilla. Biochem Pharmacol 2000;59:1387-94. PubMed
  8. Kassi E, Papoutsi Z, Fokialakis N, et al. Greek plant extracts exhibit selective estrogen receptor modulator (SERM)-like properties. J Agric Food Chem 2004;52:6956-61. PubMed
  9. Maliakal PP, Wanwimolruk S. Effect of herbal teas on hepatic drug metabolizing enzymes in rats. J Pharm Pharmacol 2001;53:1323-9. PubMed
  10. Segal R, Pilote L. Warfarin interaction with Matricaria chamomilla. CMAJ 2006;174:1281-2. PubMed
  11. Loggia RD, Traversa U, Scarcia V, et al. Depressive effects of Chamomilla recutita (L.) Rausch, tubular flowers, on central nervous system in mice. Pharmacol Res Commun 1982;14(2):153-162. PubMed
  12. Ganzera M, Schneider P, Stuppner H. Inhibitory effects of the essential oil of chamomile (Matricaria recutita L.) and its major constituents on human cytochrome P450 enzymes. Life Sci 2006;78(8):856-861. PubMed
  13. Benito P, Rodríguez-Perez R, García F, Juste S, Moneo I, Caballero ML. Occupational allergic rhinoconjunctivitis induced by Matricaria chamomilla with tolerance of chamomile tea. J Investig Allergol Clin Immunol. 2014;24(5):369-70. No abstract available.
  14. Braga FT, Santos AC, Bueno PC, et al. Use of Chamomilla recutita in the prevention and treatment of oral mucositis in patients undergoing hematopoietic stem cell transplantation: a randomized, controlled, phase II clinical trial. Cancer Nurs 2015;38(4):32 PubMed
  15. Sarris J, Ravindran A, Yatham LN, et al. Clinician guidelines for the treatment of psychiatric disorders with nutraceuticals and phytoceuticals: The World Federation of Societies of Biological Psychiatry (WFSBP) and Canadian Network for Mood and Anxiety T

See these in context on the German Chamomile monograph →

Stevia 10 references
  1. Chan P, Xu DY, Liu JC, et al. The effect of stevioside on blood pressure and plasma catecholamines in spontaneously hypertensive rats. Life Sci 1998;63:1679-84. PubMed
  2. Melis MS. A crude extract of Stevia rebaudiana increases the renal plasma flow of normal and hypertensive rats. Braz J Med Biol Res 1996;29:669-75.
  3. Melis MS. Chronic administration of aqueous extract of Stevia rebaudiana in rats: renal effects. J Ethnopharmacol 1995;47:129-34. PubMed
  4. Melis MS, Sainati AR. Effect of calcium and verapamil on renal function of rats during treatment with stevioside. J Ethnopharmacol 1991;33:257-622. PubMed
  5. Hsieh MH, Chan P, Sue YM, et al. Efficacy and tolerability of oral stevioside in patients with mild essential hypertension: a two-year, randomized, placebo-controlled study. Clin Ther 2003;25:2797-808. PubMed
  6. Chan P, Tomlinson B, Chen YJ, et al. A double-blind placebo-controlled study of the effectiveness and tolerability of oral stevioside in human hypertension. Br J Clin Pharmacol 2000;50:215-20. PubMed
  7. Gregersen S, Jeppesen PB, Holst JJ, Hermansen K. Antihyperglycemic effects of stevioside in type 2 diabetic subjects. Metabolism 2004;53:73-6. PubMed
  8. Barriocanal LA, Palacios M, Benitez G, et al. Apparent lack of pharmacological effect of steviol glycosides used as sweeteners in humans. A pilot study of repeated exposures in some normotensive and hypotensive individuals and in Type 1 and Type 2 diabeti
  9. Ferri LA, Alves-Do-Prado W, Yamada SS, et al. Investigation of the antihypertensive effect of oral crude stevioside in patients with mild essential hypertension. Phytother Res 2006;20:732-6. PubMed
  10. Almiron-Roig E, Navas-Carretero S, Castelnuovo G, et al. Impact of acute consumption of beverages containing plant-based or alternative sweetener blends on postprandial appetite, food intake, metabolism, and gastro-intestinal symptoms: Results of the SWEE

See these in context on the Stevia monograph →

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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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