Major interaction on record — check this product against your medications before combining. Based on 2 of 3 ingredients. Check your meds →
Dietary supplement

Super CLA Blend Ingredients & Drug Interactions

by Life Extension

Super CLA Blend label
See full label image
Softgel Capsule Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Super CLA Blend 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

Super CLA Blend is a dietary supplement by Life Extension with 3 active ingredients. Its ingredients are commonly taken for heart and cholesterol health, blood pressure support, source of healthy fats and minerals.Based on those ingredients, 923 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Guarana (Paullinia cupana) extract, Sesame seed Lignan 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 Super CLA Blend by Life Extension

Ask about any prescription or over-the-counter medication and we check it for interactions with Super CLA Blend by Life Extension — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Super CLA Blend by Life Extension

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

Super CLA Blend contains three active ingredients. Conjugated linoleic acid (CLA) is a fatty acid derived from dairy and beef.

Sesame seed lignan extract is a concentrated form of compounds from sesame seeds. Guarana extract is derived from a South American plant and contains caffeine as its active component.

The softgel also includes several inactive ingredients—gelatin, glycerin, maltodextrin, purified water, silica, sunflower lecithin, carob color, and rosemary extract—which serve as binders, thickeners, and preservatives.

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: Concentrated conjugated linoleic acid blend.
  • We looked for evidence on: Hyperlipidemia, Obesity, Metabolic syndrome, Cardiovascular disease (CVD), Body composition, Weight management — and 1 related terms.
  • The closest evidence on file: Guarana is rated "Insufficient Reliable Evidence To Rate" for Obesity (Natural Medicines).
  • Also on file: Sesame is rated "Insufficient Reliable Evidence To Rate" for Cardiovascular disease (CVD), Hyperlipidemia, Obesity, Metabolic syndrome.

The evidence for sesame seed lignan extract shows it is possibly effective for high blood pressure; clinical research suggests it can lower both systolic and diastolic readings. For other conditions—nonalcoholic fatty liver disease, HIV-related wasting, Alzheimer disease, and anemia of chronic disease—the evidence is insufficient to rate it.

Sesame was rated possibly ineffective for cough. For guarana extract, the evidence is insufficient to establish effectiveness for cancer-related appetite loss, anxiety, athletic performance, cancer-related fatigue, or chemotherapy-related fatigue.

The data we hold does not address effectiveness for other uses.

The evidence, ingredient by ingredient Sesame Guarana

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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Sesame seed lignan extract is generally well tolerated in food amounts, but it is a major allergen. Allergic reactions—ranging from skin rashes, itching, and swelling to respiratory and gastrointestinal symptoms—have been reported after oral exposure.

One study found up to 0.5% of the U.S. population reports a sesame allergy. A single case of diarrhea was noted in a clinical trial.

Concentrated sesame supplements are less well studied than food amounts, so caution is advised. Guarana's high caffeine content makes it generally well tolerated only in small amounts.

Large doses can cause stomach burning, nausea, dizziness, insomnia (especially in children), nervousness, restlessness, tremors, headache, anxiety, and agitation. Caffeine can trigger anaphylaxis in sensitive individuals, though true allergy to caffeine is rare.

During pregnancy, guarana should be avoided due to its caffeine content. While breastfeeding, caffeine passes into breast milk, so it should be avoided or limited.

For sesame, safety data in pregnancy and while breastfeeding is not well established in concentrated supplement form; talk with your doctor.

Side effects, ingredient by ingredient Sesame Guarana

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?
  • 2 of the 2 matched ingredients can interact with medications — Guarana, Sesame.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications; lithium.
  • For scale: 923 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.

Stop and check with your pharmacist if you take ephedrine or ephedra (a stimulant medication) — the caffeine in guarana creates a Major risk for serious stimulant adverse effects. Also double-check before starting if you take blood pressure medications (antihypertensives), diabetes medications, seizure medications (valproate, felbamate, carbamazepine), fluvoxamine (an antidepressant), disulfiram (Antabuse), dipyridamole (Persantine), clozapine (Clozaril), or tamoxifen (Nolvadex).

These interactions are Moderate in severity.

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. Major medication interactions have been identified, and safety information is well characterized.

This product is worth a careful medication check before you start. If you take blood pressure or diabetes medications, seizure medications, or any of the specific drugs listed in the med_watch section below, have your pharmacist review it first.

The guarana caffeine content makes this a poor choice if you're pregnant or breastfeeding, and the sesame allergen is a serious concern if you have a known sesame allergy.

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

Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Apr 22, 2016.

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 Super CLA Blend, straight from the product label.

Brand Life Extension
Barcode (UPC) 7737870819127
Net contents 120 Softgel(s)
Market status On market
Date entered into DSLD Apr 22, 2016
DSLD ID 58697
Product type Other Combinations
Supplement form Softgel Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 Super CLA Blend by Life Extension, 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:
3 Softgel(s)
Maximum serving Sizes:
3 Softgel(s)
Servings per container
40
UPC/BARCODE
7737870819127
IngredientAmount% DV
Calories30 {Calories}--
Calories from Fat30 {Calories}--
Total Fat3 Gram(s)5%
Conjugated Linoleic Acid3000 mg--
Sesame seed Lignan extract20 mg--
Guarana (Paullinia cupana) extract819 mg--

Other ingredients: Gelatin, Glycerin, Maltodextrin, purified Water, Silica, Sunflower Lecithin, Carob color, Rosemary extract

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.
General Statements

Scan for product info

This supplement should be taken in conjunction with a healthy diet and regular exercise program. Results may vary.

1000 mg Helps Maintain Optimum Weight

To report a serious adverse event or obtain product information, contact 1-866-280-2852.

Suggested/Recommended/Usage/Directions

Read the entire label and follow the directions carefully prior to use. DIRECTIONS: Take three (3) softgels daily with meals. Can be taken in divided doses or all at once.

Precautions

- DO NOT EXCEED RECOMMENDED DOSE. - Do not purchase if outer seal is broken or damaged.

- When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

CAUTION: If you have hypertension please consult your healthcare practitioner before supplementing with this product.

WARNINGS: - KEEP OUT OF REACH OF CHILDREN.

Formula

Super CLA Blend is a concentrated blend of free fatty acids derived from safflower oil. Super CLA Blend consists of a minimum of 78% conjugated linoleic acid yielding optimal levels including the two active isomers C18:2 c9,t11 and C18:2 t10,c12, and minimizing the inactive isomers, ensuring a consistent isomer profile.

with Guarana & Sesame Lignans

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.

General

Q00819I

FDA Statement of Identity

Dietary Supplement

Formulation

Non-GMO

Storage

Store tightly closed in a cool, dry place.

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

See for yourself

Super CLA Blend by Life Extension label

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

Super CLA Blend 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 Super CLA Blend by Life Extension

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

Serving size3 Softgel(s) Dosage formSoftgel Capsule Servings per container40 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.

Conjugated Linoleic Acid

3000 mg per serving Form: Safflower Oil

Sesame seed Lignan extract

Interacts with
528 drugs
20 mg per serving

Sesame is a nutritious seed and oil widely used in cooking and traditional medicine, and it provides healthy fats, fiber, and antioxidant compounds ca...

Sesame seed Lignan extract monograph & interactions

Guarana (Paullinia cupana) extract

Interacts with
655 drugs
819 mg per serving Form: Caffeine

Guarana is an Amazonian seed that is naturally high in caffeine, which explains most of its stimulant and energy effects. While it may give a short-te...

Guarana (Paullinia cupana) extract monograph & interactions

Other (inactive) ingredients: Gelatin, Glycerin, Maltodextrin, Purified Water, Silica, Sunflower Lecithin, Carob color, Rosemary extract. These complete the product’s ingredient list but are not active constituents.

Interaction report

Super CLA Blend by Life Extension Drug Interactions

Want to check YOUR meds against Super CLA Blend?

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
923Drugs
8 Major 695 Moderate 220 Minor

Ingredients driving the most interactions

Guarana (Paullinia cupana) extract 655
Sesame seed Lignan extract 528

Individual Drug Interactions

The ingredients in Super CLA Blend interact with 923 drugs. Click any drug to see the details.

2 of the 3 ingredients in Super CLA Blend interact with drugs. Each result below shows which ingredient is responsible. Guarana (Paullinia cupana) extract Sesame seed Lignan extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Super CLA Blend 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.

Guarana (Paullinia cupana) extract41 drug types · 655 drugs

Ephedrine

Theoretically, concomitant use might increase the risk for stimulant adverse effects.
Guarana contains caffeine. Use of ephedrine with caffeine can increase the risk of stimulatory adverse effects. 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.

Likelihood Probable Evidence D
Adenosine (Adenocard)

Theoretically, guarana might decrease the vasodilatory effects of adenosine and interfere with its use prior to stress testing.
Guarana 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 and 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, guarana may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro and animal research suggests that guarana extract can inhibit platelet aggregation. This effect may be due to the caffeine in guarana, which is also reported to have antiplatelet activity. This interaction has not been reported in humans.

Likelihood Possible Evidence D
Beta-Adrenergic Agonists

Theoretically, concomitant use might increase the clinical effects of beta-adrenergic agonists.
Guarana contains caffeine. Theoretically, concomitant use of large amounts of caffeine might increase cardiac inotropic effects of beta-agonists.

Likelihood Probable Evidence D
Carbamazepine (Tegretol)

Theoretically, guarana might reduce the effects of carbamazepine and increase the risk for convulsions.
Animal research suggests that taking caffeine can lower the anticonvulsant effects of carbamazepine and can induce seizures when given to animals in doses above 400 mg/kg. Human research has shown that taking caffeine 300 mg in three divided doses along with carbamazepine 200 mg reduces the bioavailability of carbamazepine by 32% and prolongs the plasma half-life of carbamazepine two-fold in healthy individuals.

Likelihood Possible Evidence D
Cimetidine (Tagamet)

Theoretically, concomitant use might increase the effects and adverse effects of caffeine in guarana.
Guarana contains caffeine. Cimetidine decreases the rate of caffeine clearance by 31% to 42%.

Likelihood Likely Evidence B
Clozapine (Clozaril)

Theoretically, guarana might increase the levels and adverse effects of clozapine and acutely exacerbate psychotic symptoms.
Guarana 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 more sensitive to the interaction between clozapine and caffeine.

Likelihood Possible Evidence B
Dipyridamole (Persantine)

Theoretically, guarana might decrease the vasodilatory effects of dipyridamole and interfere with its use prior to stress testing.
Guarana contains caffeine. Caffeine might inhibit dipyridamole-induced vasodilation. It is recommended that methylxanthines and methylxanthine-containing products 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 human research, disulfiram decreases the clearance and increases the half-life of caffeine.

Likelihood Probable Evidence D
Diuretic Drugs

Theoretically, using guarana with diuretic drugs might increase the risk of hypokalemia.
Guarana contains caffeine. Caffeine, especially in excessive amounts, can reduce potassium levels due to stimulation of the sodium-potassium pump. Diuretics can also lower potassium levels.

Likelihood Possible Evidence D
Estrogens

Theoretically, estrogens might increase the levels and adverse effects of caffeine.
Guarana contains caffeine. Estrogen inhibits caffeine metabolism.

Likelihood Probable Evidence B
Ethosuximide (Zarontin)

Theoretically, guarana might reduce the effects of ethosuximide and increase the risk for convulsions.
Guarana contains caffeine. Animal research shows that caffeine 92.4 mg/kg can decrease the anticonvulsant activity of ethosuximide. This effect has not been observed in humans.

Likelihood Possible Evidence D
Felbamate (Felbatol)

Theoretically, guarana might reduce the effects of felbamate and increase the risk for convulsions.
Guarana contains caffeine. Animal research shows that a high dose of caffeine 161.7 mg/kg can decreases the anticonvulsant activity of felbamate. This effect has not been observed in humans.

Likelihood Possible Evidence D
Flutamide (Eulexin)

Theoretically, guarana might increase the levels and adverse effects of flutamide.
Guarana contains caffeine. In vitro evidence shows that caffeine can inhibit the metabolism of flutamide. However, this effect has not been reported in humans.

Likelihood Probable Evidence D
Fluvoxamine (Luvox)

Theoretically, fluvoxamine might increase the levels and adverse effects of caffeine.
Guarana contains caffeine. Fluvoxamine reduces caffeine metabolism.

Likelihood Probable Evidence D
Lithium

Theoretically, abrupt guarana withdrawal might increase the levels and adverse effects of lithium.
Guarana contains caffeine. Theoretically, abrupt caffeine withdrawal might increase serum lithium levels. There are two case reports of lithium tremor that worsened upon abrupt coffee withdrawal.

Likelihood Probable Evidence D
Monoamine Oxidase Inhibitors (Maois)

Theoretically, concomitant use might increase the risk of a hypertensive crisis.
Guarana 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. In a case report, a patient that consumed 10-12 cups of caffeinated coffee and took the MAOI tranylcypromine presented with severe hypertension. Hypertension was resolved after the patient switched to drinking decaffeinated coffee.

Likelihood Possible Evidence D
Nicotine

Theoretically, concomitant use might increase the risk of hypertension.
Guarana 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, guarana might decrease the effects of pentobarbital.
Guarana contains caffeine. In vivo evidence suggests that caffeine can negate the hypnotic effects of pentobarbital in humans. However, animal research suggests that guarana does not alter the hypnotic effect of pentobarbital.

Likelihood Possible Evidence B
Phenobarbital (Luminal)

Theoretically, guarana might reduce the effects of phenobarbital and increase the risk for convulsions.
Guarana contains caffeine. Animal research shows 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.
Guarana 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, guarana might reduce the effects of phenytoin and increase the risk for convulsions.
Guarana contains caffeine. Animal research shows 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, guarana might increase the levels and clinical effects of pioglitazone.
Guarana 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.
Guarana contains caffeine. Caffeine and riluzole are both metabolized by cytochrome P450 1A2 (CYP1A2), and concomitant use might reduce the metabolism of one or both agents.

Likelihood Possible Evidence D
Stimulant Drugs

Theoretically, concomitant use might increase stimulant adverse effects.
Guarana contains caffeine. Due to the central nervous system (CNS) stimulant effects of caffeine, concomitant use with stimulant drugs can increase the risk of adverse effects.

Likelihood Possible Evidence D
Guarana (Paullinia cupana) extract full monograph & all 41 interactions

Sesame seed Lignan extract5 drug types · 528 drugs

Antidiabetes Drugs

Taking sesame oil with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical studies show that sesame oil can decrease plasma glucose and glycated hemoglobin (HbA1c) levels. Some clinical research in patients taking glibenclamide shows that using sesame oil or a blend of sesame oil and rice bran oil in place of other oil for cooking reduces plasma glucose more than glibenclamide alone. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Antihypertensive Drugs

Taking sesame oil with antihypertensive drugs might increase the risk of hypotension.
Clinical research shows that replacing other cooking oil with sesame oil can lower systolic blood pressure (SBP) and diastolic blood pressure (DBP) in patients with or without hypertension. There is also some evidence that sesame oil has additive effects in patients also taking atenolol, nifedipine, and/or hydrochlorothiazide. In patients using nifedipine, using a blend of sesame oil and rice bran oil for cooking reduces both SBP and DBP more than nifedipine alone.

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

Theoretically, sesame might increase the levels and clinical effects of CYP2C9 substrates.
In vitro, sesame inhibits CYP2C9. However, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Tamoxifen (Nolvadex)

Theoretically, sesame might interfere with tamoxifen.
In animal research, sesame seed reduces the tumor-inhibitory effect of tamoxifen by reducing apoptosis and increasing proliferation. This interaction has not been reported in humans.

Likelihood Possible Evidence D
P-Glycoprotein Substrates

Theoretically, sesame might alter the transport of P-glycoprotein substrates.
In vitro research suggests that sesamin, a constituent of sesame, can inhibit the multi-drug transporter protein, P-glycoprotein. However, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Sesame seed Lignan extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Super CLA Blend, from the product label.

Life Extension

See all Life Extension products
Name
Quality Supplements and Vitamins, Inc.
City
Ft. Lauderdale
State
FL
ZipCode
33309
Phone Number
1-866-280-2852
Web Address
LifeExtension.com
Pharmacist Counseling Corner

Super CLA Blend by Life Extension: Common Questions

Does Super CLA Blend by Life Extension interact with any medications?
Yes. Based on its ingredients, Super CLA Blend has a known interaction with 923 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?
Super CLA Blend 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?
You should avoid Super CLA Blend during pregnancy. Guarana's high caffeine content makes it unsafe in pregnancy. Sesame safety in concentrated supplements during pregnancy is not well studied. Talk with your doctor before taking any supplement while pregnant.
What is conjugated linoleic acid (CLA) supposed to do?
CLA is a fatty acid, but our data does not include effectiveness ratings for CLA. We couldn't check it for drug interactions either. Your pharmacist or doctor can tell you more about its intended use.
Is this safe if I have a sesame allergy?
No. This product contains sesame seed lignan extract, and sesame is a major allergen. Even in concentrated supplements, it can trigger allergic reactions ranging from skin rashes to breathing problems. Do not take this product.
What are the most common side effects of guarana?
The most common are stomach burning and nausea. Because guarana is high in caffeine, it can also cause dizziness, insomnia, nervousness, restlessness, tremors, headache, anxiety, and agitation—especially if you take a large dose.
Can I take this while breastfeeding?
It's best to avoid or limit this product while breastfeeding. Guarana's caffeine passes into breast milk and can affect your baby. Sesame safety while breastfeeding is not well studied in concentrated supplements. Talk with your doctor.
What is sesame seed lignan extract and why is it in here?
Lignan extract is a concentrated form of compounds from sesame seeds. Research shows sesame may help lower blood pressure, which is why it's included. However, it's a major allergen, so it's not suitable for everyone.

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

Not sure if Super CLA Blend is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

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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.

Super CLA Blend label
Go deeper

The Full Monographs Behind Super CLA Blend’s Ingredients

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

Herb & supplement monograph

Sesame

Interacts with 528 drugs

Sesame is a nutritious seed and oil widely used in cooking and traditional medicine, and it provides healthy fats, fiber, and antioxidant compounds called lignans. Some early research sugges...

Read the full Sesame monograph → Herb & supplement monograph

Guarana

Interacts with 655 drugs

Guarana is an Amazonian seed that is naturally high in caffeine, which explains most of its stimulant and energy effects. While it may give a short-term boost in alertness and reduce fatigue...

Read the full Guarana monograph →
Sources

Sources & How We Checked

Super CLA Blend'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 167 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.

Sesame 53 references
  1. von Moltke LL, Weemhoff JL, Bedir E, et al. Inhibition of human cytochromes P450 by components of Ginkgo biloba. J Pharm Pharmacol 2004;56:1039-44.
  2. Sankar, D., Sambandam, G., Ramakrishna, Rao M., and Pugalendi, K. V. Modulation of blood pressure, lipid profiles and redox status in hypertensive patients taking different edible oils. Clin Chim Acta 2005;355(1-2):97-104. PubMed
  3. Sankar, D., Rao, M. R., Sambandam, G., and Pugalendi, K. V. A pilot study of open label sesame oil in hypertensive diabetics. J Med Food 2006;9(3):408-412. PubMed
  4. Sankar, D., Rao, M. R., Sambandam, G., and Pugalendi, K. V. Effect of sesame oil on diuretics or Beta-blockers in the modulation of blood pressure, anthropometry, lipid profile, and redox status. Yale J Biol.Med. 2006;79(1):19-26.
  5. Sacco, S. M., Chen, J., Power, K. A., Ward, W. E., and Thompson, L. U. Lignan-rich sesame seed negates the tumor-inhibitory effect of tamoxifen but maintains bone health in a postmenopausal athymic mouse model with estrogen-responsive breast tumors. Menop PubMed
  6. Sacco, S. M., Power, K. A., Chen, J., Ward, W. E., and Thompson, L. U. Interaction of sesame seed and tamoxifen on tumor growth and bone health in athymic mice. Exp Biol Med (Maywood) 2007;232(6):754-761.
  7. Hsiao, E. S., Lin, L. J., Li, F. Y., Wang, M. M., Liao, M. Y., and Tzen, J. T. Gene families encoding isoforms of two major sesame seed storage proteins, 11S globulin and 2S albumin. J Agric Food Chem 2006;54(25):9544-9550. PubMed
  8. Ramesh, B., Saravanan, R., and Pugalendi, K. V. Influence of sesame oil on blood glucose, lipid peroxidation, and antioxidant status in streptozotocin diabetic rats. J Med Food 2005;8(3):377-381. PubMed
  9. Panizzolo, C., Tura, M., and Barbato, A. Anaphylaxis to sesame paste. Eur Ann Allergy Clin Immunol 2005;37(1):34-35.
  10. Leduc, V., Moneret-Vautrin, D. A., Tzen, J. T., Morisset, M., Guerin, L., and Kanny, G. Identification of oleosins as major allergens in sesame seed allergic patients. Allergy 2006;61(3):349-356. PubMed
  11. Agne, P. S., Bidat, E., Agne, P. S., Rance, F., and Paty, E. Sesame seed allergy in children. Eur Ann Allergy Clin Immunol 2004;36(8):300-305.
  12. Dalal, I., Binson, I., Levine, A., Somekh, E., Ballin, A., and Reifen, R. The pattern of sesame sensitivity among infants and children. Pediatr Allergy Immunol 2003;14(4):312-316. PubMed
  13. Moneret-Vautrin, D. A., Kanny, G., and Lagrange, A. [Occupational asthma caused by organic substances]. Rev Med Interne 1994;15 Suppl 2:216s-225s.
  14. Keskinen, H., Ostman, P., Vaheri, E., Tarvainen, K., Grenquist-Norden, B., Karppinen, O., and Nordman, H. A case of occupational asthma, rhinitis and urticaria due to sesame seed. Clin Exp Allergy 1991;21(5):623-624. PubMed
  15. Alday, E., Curiel, G., Lopez-Gil, M. J., Carreno, D., and Moneo, I. Occupational hypersensitivity to sesame seeds. Allergy 1996;51(1):69-70. DOI
  16. Kubo, Y., Nonaka, S., and Yoshida, H. Contact sensitivity to unsaponifiable substances in sesame oil. Contact Dermatitis 1986;15(4):215-217. PubMed
  17. Steurich, F. [Allergy to sesame seeds]. Pneumologie 1989;43(12):710-714.
  18. Morisset, M., Moneret-Vautrin, D. A., Kanny, G., Guenard, L., Beaudouin, E., Flabbee, J., and Hatahet, R. Thresholds of clinical reactivity to milk, egg, peanut and sesame in immunoglobulin E-dependent allergies: evaluation by double-blind or single-blind
  19. Tsai, H. J., Kumar, R., Pongracic, J., Liu, X., Story, R., Yu, Y., Caruso, D., Costello, J., Schroeder, A., Fang, Y., Demirtas, H., Meyer, K. E., O'Gorman, M. R., and Wang, X. Familial aggregation of food allergy and sensitization to food allergens: a fam
  20. James, C., Williams-Akita, A., Rao, Y. A., Chiarmonte, L. T., and Scheider, A. T. Sesame seed anaphylaxis. N Y State J Med 1991;91(10):457-458.
  21. Chiu, J. T. and Haydik, I. B. Sesame seed oil anaphylaxis. J Allergy Clin Immunol 1991;88(3 Pt 1):414-415. PubMed
  22. Asero, R., Mistrello, G., Roncarolo, D., Antoniotti, P. L., and Falagiani, P. A case of sesame seed-induced anaphylaxis. Allergy 1999;54(5):526-527.
  23. Pajno, G. B., Passalacqua, G., Magazzu, G., Barberio, G., Vita, D., and Canonica, G. W. Anaphylaxis to sesame. Allergy 2000;55(2):199-201. PubMed
  24. Neering, H., Vitanyi, B. E., Malten, K. E., van Ketel, W. G., and van Dijk, E. Allergens in sesame oil contact dermatitis. Acta Derm Venereol 1975;55(1):31-34. DOI
  25. Caminiti, L., Vita, D., Passalacqua, G., Arrigo, T., Barberi, S., Lombardo, F., and Pajno, G. B. Tahini, a little known sesame-containing food, as an unexpected cause of severe allergic reaction. J Investig Allergol Clin Immunol 2006;16(5):308-310.
  26. Phan, T. G., Strasser, S. I., Koorey, D., McCaughan, G. W., Rimmer, J., Dunckley, H., Goddard, L., and Adelstein, S. Passive transfer of nut allergy after liver transplantation. Arch Intern Med 2003;163(2):237-239. PubMed
  27. Oiso, N., Yamadori, Y., Higashimori, N., Kawara, S., and Kawada, A. Allergic contact dermatitis caused by sesame oil in a topical Chinese medicine, shi-un-ko. Contact Dermatitis 2008;58(2):109.
  28. VAN Dijk, E., Dijk, E., Neering, H., and Vitanyi, B. E. Contact hypersensitivity to sesame oil in patients with leg ulcers and eczema. Acta Derm Venereol 1973;53(2):133-135. DOI
  29. Beyer, K., Bardina, L., Grishina, G., and Sampson, H. A. Identification of sesame seed allergens by 2-dimensional proteomics and Edman sequencing: seed storage proteins as common food allergens. J Allergy Clin Immunol 2002;110(1):154-159. PubMed
  30. Koopman, M., Richter, C., Parren, R. J., and Janssen, M. Bodybuilding, sesame oil and vasculitis. Rheumatology (Oxford) 2005;44(9):1135. PubMed
  31. Kagi, M. K. and Wuthrich, B. Falafel burger anaphylaxis due to sesame seed allergy. Ann Allergy 1993;71(2):127-129.
  32. Hayakawa, R., Matsunaga, K., Suzuki, M., Hosokawa, K., Arima, Y., Shin, C. S., and Yoshida, M. Is sesamol present in sesame oil? Contact Dermatitis 1987;17(3):133-135.
  33. Malish, D., Glovsky, M. M., Hoffman, D. R., Ghekiere, L., and Hawkins, J. M. Anaphylaxis after sesame seed ingestion. J Allergy Clin Immunol 1981;67(1):35-38. PubMed
  34. Fremont, S., Zitouni, N., Kanny, G., Veneri, V., Metche, M., Moneret-Vautrin, D. A., and Nicolas, J. P. Allergenicity of some isoforms of white sesame proteins. Clin Exp Allergy 2002;32(8):1211-1215. PubMed
  35. Pastorello, E. A., Varin, E., Farioli, L., Pravettoni, V., Ortolani, C., Trambaioli, C., Fortunato, D., Giuffrida, M. G., Rivolta, F., Robino, A., Calamari, A. M., Lacava, L., and Conti, A. The major allergen of sesame seeds (Sesamum indicum) is a 2S albu
  36. Wolff, N., Cogan, U., Admon, A., Dalal, I., Katz, Y., Hodos, N., Karin, N., and Yannai, S. Allergy to sesame in humans is associated primarily with IgE antibody to a 14 kDa 2S albumin precursor. Food Chem Toxicol 2003;41(8):1165-1174. PubMed
  37. Wolff, N., Yannai, S., Karin, N., Levy, Y., Reifen, R., Dalal, I., and Cogan, U. Identification and characterization of linear B-cell epitopes of beta-globulin, a major allergen of sesame seeds. J Allergy Clin Immunol 2004;114(5):1151-1158.
  38. Navuluri, L., Parvataneni, S., Hassan, H., Birmingham, N. P., Kelly, C., and Gangur, V. Allergic and anaphylactic response to sesame seeds in mice: identification of Ses i 3 and basic subunit of 11s globulins as allergens. Int Arch Allergy Immunol 2006;14 PubMed
  39. Beyer, K., Grishina, G., Bardina, L., and Sampson, H. A. Identification of 2 new sesame seed allergens: Ses i 6 and Ses i 7. J Allergy Clin Immunol 2007;119(6):1554-1556. PubMed
  40. Moreno, F. J., Rubio, L. A., Olano, A., and Clemente, A. Uptake of 2S albumin allergens, Ber e 1 and Ses i 1, across human intestinal epithelial Caco-2 cell monolayers. J Agric Food Chem 2006;54(22):8631-8639. PubMed
  41. Moreno, F. J., Maldonado, B. M., Wellner, N., and Mills, E. N. Thermostability and in vitro digestibility of a purified major allergen 2S albumin (Ses i 1) from white sesame seeds (Sesamum indicum L.). Biochim Biophys Acta 2005;1752(2):142-153. PubMed
  42. Okura, T., Ibe, M., Umegaki, K., Shinozuka, K., and Yamada, S. Effects of dietary ingredients on function and expression of P-glycoprotein in human intestinal epithelial cells. Biol Pharm Bull 2010;33(2):255-259. PubMed
  43. Nabekura, T., Yamaki, T., Ueno, K., and Kitagawa, S. Inhibition of P-glycoprotein and multidrug resistance protein 1 by dietary phytochemicals. Cancer Chemother Pharmacol 2008;62(5):867-873. PubMed
  44. Devarajan S, Chatterjee B, Urata H, et al. A blend of sesame and rice bran oils lowers hyperglycemia and improves the lipids. Am J Med. 2016;129(7):731-9. PubMed
  45. Khosravi-Boroujeni H, Nikbakht E, Natanelov E, Khalesi S. Can sesame consumption improve blood pressure? A systematic review and meta-analysis of controlled trials. J Sci Food Agric. 2017;97(10):3087-3094. PubMed
  46. Devarajan S, Singh R, Chatterjee B, Zhang B, Ali A. A blend of sesame oil and rice bran oil lowers blood pressure and improves the lipid profile in mild-to-moderate hypertensive patients. J Clin Lipidol. 2016;10(2):339-49. PubMed
  47. Warren CM, Chadha AS, Sicherer SH. Prevalence and severity of sesame allergy in the United States. JAMA Netw Open. 2019;2(8):e199144. PubMed
  48. Sillcox C, Gabrielli S, Clarke AE, et al. Sesame-induced anaphylaxis in pediatric patients from the cross-Canada anaphylaxis registry. Ann Allergy Asthma Immunol 2022;129(3):342-346. PubMed
  49. Yargholi A, Najafi MH, Zareian MA, Hawkins J, Shirbeigi L, Ayati MH. The effects of sesame consumption on glycemic control in adults: A systematic review and meta-analysis of randomized clinical trial. Evid Based Complement Alternat Med 2021;2021:2873534. PubMed
  50. Sohouli MH, Haghshenas N, Hernández-Ruiz Á, Shidfar F. Consumption of sesame seeds and sesame products has favorable effects on blood glucose levels but not on insulin resistance: A systematic review and meta-analysis of controlled clinical trials. Phytot PubMed
  51. Atefi M, Entezari MH, Vahedi H, Hassanzadeh A. The effects of sesame oil on metabolic biomarkers: a systematic review and meta-analysis of clinical trials. J Diabetes Metab Disord 2022;21(1):1065-1080. PubMed
  52. Khani B, Bidgoli SR, Moattar F, Hassani H. Effect of sesame on sperm quality of infertile men. J Res Med Sci. 2013;18(3):184-7.
  53. Huang H, Zhou G, Pu R, Cui Y, Liao D. Clinical evidence of dietary supplementation with sesame on cardiovascular risk factors: An updated meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr. 2022;62(20):5592-5602. PubMed

See these in context on the Sesame monograph →

Guarana 114 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  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. Joeres R, Klinker H, Heusler H, et al. Influence of mexiletine on caffeine elimination. Pharmacol Ther 1987;33:163-9. PubMed
  8. 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.
  9. 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
  10. 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
  11. 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
  12. 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.
  13. Klebanoff MA, Levine RJ, DerSimonian R, et al. Maternal serum paraxanthine, a caffeine metabolite, and the risk of spontaneous abortion. N Engl J Med 1999;341:1639-44. PubMed
  14. Eskenazi B. Caffeine—filtering the facts. N Engl J Med 1999;341:1688-9. PubMed
  15. 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
  16. 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
  17. 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
  18. 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
  19. FDA. Proposed rule: dietary supplements containing ephedrine alkaloids. Available at: www.verity.fda.gov (Accessed 25 January 2000).
  20. Boozer CN, Nasser JA, Heymsfield SB, et al. An herbal supplement containing Ma Huang-Guarana for weight loss: a randomized, double-blind trial. Int J Obes Relat Metab Disord 2001;25:316-24. PubMed
  21. Briggs GB, Freeman RK, Yaffe SJ. Drugs in Pregnancy and Lactation. 5th ed. Philadelphia, PA: Lippincott Williams & Wilkins; 1998.
  22. 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
  23. Tobias JD. Caffeine in the treatment of apnea associated with respiratory syncytial virus infection in neonates and infants. South Med J 2000;93:297-304. DOI
  24. 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
  25. 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
  26. American Academy of Pediatrics. The transfer of drugs and other chemicals into human milk. Pediatrics 2001;108:776-89. PubMed
  27. Sinclair CJ, Geiger JD. Caffeine use in sports. A pharmacological review. J Sports Med Phys Fitness 2000;40:71-9.
  28. 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
  29. Ali M, Afzal M. A potent inhibitor of thrombin stimulated platelet thromboxane formation from unprocessed tea. Prostaglandins Leukot Med 1987;27:9-13. PubMed
  30. Ardlie NG, Glew G, Schultz BG, Schwartz CJ. Inhibition and reversal of platelet aggregation by methyl xanthines. Thromb Diath Haemorrh 1967;18:670-3. DOI
  31. 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
  32. Haller CA, Jacob P 3rd, Benowitz NL. Pharmacology of ephedra alkaloids and caffeine after single-dose dietary supplement use. Clin Pharmacol Ther 2002;71:421-32. PubMed
  33. Bell DG, Jacobs I, Ellerington K. Effect of caffeine and ephedrine ingestion on anaerobic exercise performance. Med Sci Sports Exerc 2001;33:1399-403. PubMed
  34. 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
  35. 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
  36. McGowan JD, Altman RE, Kanto WP Jr. Neonatal withdrawal symptoms after chronic maternal ingestion of caffeine. South Med J 1988;81:1092-4.. PubMed
  37. Nehlig A, Debry G. Consequences on the newborn of chronic maternal consumption of coffee during gestation and lactation: a review. J Am Coll Nutr 1994;13:6-21.. PubMed
  38. Massey LK. Is caffeine a risk factor for bone loss in the elderly? Am J Clin Nutr 2001;74:569-70. PubMed
  39. Kockler DR, McCarthy MW, Lawson CL. Seizure activity and unresponsiveness after hydroxycut ingestion. Pharmacotherapy 2001;21:647-51.. PubMed
  40. Schechter MD, Timmons GD. Objectively measured hyperactivity--II. Caffeine and amphetamine effects. J Clin Pharmacol 1985;25:276-80.. PubMed
  41. Nix D, Zelenitsky S, Symonds W, et al. The effect of fluconazole on the pharmacokinetics of caffeine in young and elderly subjects. Clin Pharmacol Ther 1992;51:183. DOI
  42. Infante S, Baeza ML, Calvo M, et al. Anaphylaxis due to caffeine. Allergy 2003;58:681-2. PubMed
  43. Massey LK, Whiting SJ. Caffeine, urinary calcium, calcium metabolism and bone. J Nutr 1993;123:1611-4. PubMed
  44. Nawrot P, Jordan S, Eastwood J, et al. Effects of caffeine on human health. Food Addit Contam 2003;20:1-30. PubMed
  45. May DC, Jarboe CH, VanBakel AB, Williams WM. Effects of cimetidine on caffeine disposition in smokers and nonsmokers. Clin Pharmacol Ther 1982;31:656-61. PubMed
  46. Abernethy DR, Todd EL. Impairment of caffeine clearance by chronic use of low-dose oestrogen-containing oral contraceptives. Eur J Clin Pharmacol 1985;28:425-8. PubMed
  47. Brown NJ, Ryder D, Branch RA. A pharmacodynamic interaction between caffeine and phenylpropanolamine. Clin Pharmacol Ther 1991;50:363-71. PubMed
  48. Sanderink GJ, Bournique B, Stevens J, et al. Involvement of human CYP1A isoenzymes in the metabolism and drug interactions of riluzole in vitro. Pharmacol Exp Ther 1997;282:1465-72. DOI
  49. Wahllander A, Paumgartner G. Effect of ketoconazole and terbinafine on the pharmacokinetics of caffeine in healthy volunteers. Eur J Clin Pharmacol 1989;37:279-83. PubMed
  50. Carrillo JA, Benitez J. Clinically significant pharmacokinetic interactions between dietary caffeine and medications. Clin Pharmacokinet 2000;39:127-53. PubMed
  51. Underwood DA. Which medications should be held before a pharmacologic or exercise stress test? Cleve Clin J Med 2002;69:449-50. PubMed
  52. Aqel RA, Zoghbi GJ, Trimm JR, et al. Effect of caffeine administered intravenously on intracoronary-administered adenosine-induced coronary hemodynamics in patients with coronary artery disease. Am J Cardiol 2004;93:343-6. PubMed
  53. Zheng XM, Williams RC. Serum caffeine levels after 24-hour abstention: clinical implications on dipyridamole (201)Tl myocardial perfusion imaging. J Nucl Med Technol 2002;30:123-7.
  54. Institute of Medicine. Caffeine for the Sustainment of Mental Task Performance: Formulations for Military Operations. Washington, DC: National Academy Press, 2001. Available at: http://books.nap.edu/books/0309082587/html/index.html. DOI
  55. Holmgren P, Norden-Pettersson L, Ahlner J. Caffeine fatalities--four case reports. Forensic Sci Int 2004;139:71-3. PubMed
  56. Dews PB, O'Brien CP, Bergman J. Caffeine: behavioral effects of withdrawal and related issues. Food Chem Toxicol 2002;40:1257-61. PubMed
  57. Beach CA, Mays DC, Guiler RC, et al. Inhibition of elimination of caffeine by disulfiram in normal subjects and recovering alcoholics. Clin Pharmacol Ther 1986;39:265-70. PubMed
  58. Leson CL, McGuigan MA, Bryson SM. Caffeine overdose in an adolescent male. J Toxicol Clin Toxicol 1988;26:407-15. PubMed
  59. Juliano LM, Griffiths RR. A critical review of caffeine withdrawal: empirical validation of symptoms and signs, incidence, severity, and associated features. Psychopharmacology (Berl) 2004;176:1-29. PubMed
  60. Winkelmayer WC, Stampfer MJ, Willett WC, Curhan GC. Habitual caffeine intake and the risk of hypertension in women. JAMA 2005;294:2330-5. PubMed
  61. Raaska K, Raitasuo V, Laitila J, Neuvonen PJ. Effect of caffeine-containing versus decaffeinated coffee on serum clozapine concentrations in hospitalised patients. Basic Clin Pharmacol Toxicol 2004;94:13-8. DOI
  62. Forrest WH Jr, Bellville JW, Brown BW Jr. The interaction of caffeine with pentobarbital as a nighttime hypnotic. Anesthesiology 1972;36:37-41. PubMed
  63. Lake CR, Rosenberg DB, Gallant S, et al. Phenylpropanolamine increases plasma caffeine levels. Clin Pharmacol Ther 1990;47:675-85. PubMed
  64. Weng X, Odouli R, Li DK. Maternal caffeine consumption during pregnancy and the risk of miscarriage: a prospective cohort study. Am J Obstet Gynecol 2008;198:279.e1-8. PubMed
  65. Savitz DA, Chan RL, Herring AH, et al. Caffeine and miscarriage risk. Epidemiology 2008;19:55-62. PubMed
  66. Mansi IA, Huang J. Rhabdomyolysis in response to weight-loss herbal medicine. Am J Med Sci 2004;327:356-357. PubMed
  67. Spinella M. Herbal Medicines and Epilepsy: The Potential for Benefit and Adverse Effects. Epilepsy Behav 2001;2(6):524-532. PubMed
  68. Shet, M. S., McPhaul, M., Fisher, C. W., Stallings, N. R., and Estabrook, R. W. Metabolism of the antiandrogenic drug (Flutamide) by human CYP1A2. Drug Metab Dispos. 1997;25(11):1298-1303.
  69. Staib, A. H., Stille, W., Dietlein, G., Shah, P. M., Harder, S., Mieke, S., and Beer, C. Interaction between quinolones and caffeine. Drugs 1987;34 Suppl 1:170-174. PubMed
  70. Stille, W., Harder, S., Mieke, S., Beer, C., Shah, P. M., Frech, K., and Staib, A. H. Decrease of caffeine elimination in man during co-administration of 4-quinolones. J.Antimicrob.Chemother. 1987;20(5):729-734. PubMed
  71. Fuhr, U., Strobl, G., Manaut, F., Anders, E. M., Sorgel, F., Lopez-de-Brinas, E., Chu, D. T., Pernet, A. G., Mahr, G., Sanz, F., and . Quinolone antibacterial agents: relationship between structure and in vitro inhibition of the human cytochrome P450 isof
  72. Kot, M. and Daniel, W. A. Effect of diethyldithiocarbamate (DDC) and ticlopidine on CYP1A2 activity and caffeine metabolism: an in vitro comparative study with human cDNA-expressed CYP1A2 and liver microsomes. Pharmacol Rep. 2009;61(6):1216-1220. PubMed
  73. Gasior, M., Borowicz, K., Buszewicz, G., Kleinrok, Z., and Czuczwar, S. J. Anticonvulsant activity of phenobarbital and valproate against maximal electroshock in mice during chronic treatment with caffeine and caffeine discontinuation. Epilepsia 1996;37(3 PubMed
  74. Jankiewicz, K., Chroscinska-Krawczyk, M., Blaszczyk, B., and Czuczwar, S. J. [Caffeine and antiepileptic drugs: experimental and clinical data]. Przegl.Lek. 2007;64(11):965-967.
  75. Luszczki, J. J., Zuchora, M., Sawicka, K. M., Kozinska, J., and Czuczwar, S. J. Acute exposure to caffeine decreases the anticonvulsant action of ethosuximide, but not that of clonazepam, phenobarbital and valproate against pentetrazole-induced seizures i
  76. Chroscinska-Krawczyk, M., Jargiello-Baszak, M., Walek, M., Tylus, B., and Czuczwar, S. J. Caffeine and the anticonvulsant potency of antiepileptic drugs: experimental and clinical data. Pharmacol.Rep. 2011;63(1):12-18. PubMed
  77. Vaz, J., Kulkarni, C., David, J., and Joseph, T. Influence of caffeine on pharmacokinetic profile of sodium valproate and carbamazepine in normal human volunteers. Indian J.Exp.Biol. 1998;36(1):112-114.
  78. Gasior, M., Swiader, M., Przybylko, M., Borowicz, K., Turski, W. A., Kleinrok, Z., and Czuczwar, S. J. Felbamate demonstrates low propensity for interaction with methylxanthines and Ca2+ channel modulators against experimental seizures in mice. Eur.J Phar PubMed
  79. Mohiuddin, M., Azam, A. T., Amran, M. S., and Hossain, M. A. In vive effects of gliclazide and metformin on the plasma concentration of caffeine in healthy rats. Pak.J Biol Sci 5-1-2009;12(9):734-737.
  80. Mays, D. C., Camisa, C., Cheney, P., Pacula, C. M., Nawoot, S., and Gerber, N. Methoxsalen is a potent inhibitor of the metabolism of caffeine in humans. Clin.Pharmacol.Ther. 1987;42(6):621-626. PubMed
  81. Wojcikowski, J. and Daniel, W. A. Perazine at therapeutic drug concentrations inhibits human cytochrome P450 isoenzyme 1A2 (CYP1A2) and caffeine metabolism--an in vitro study. Pharmacol Rep. 2009;61(5):851-858. PubMed
  82. Daniel, W. A., Syrek, M., Rylko, Z., and Kot, M. Effects of phenothiazine neuroleptics on the rate of caffeine demethylation and hydroxylation in the rat liver. Pol.J Pharmacol 2001;53(6):615-621.
  83. Norager, C. B., Jensen, M. B., Weimann, A., and Madsen, M. R. Metabolic effects of caffeine ingestion and physical work in 75-year old citizens. A randomized, double-blind, placebo-controlled, cross-over study. Clin Endocrinol (Oxf) 2006;65(2):223-228. PubMed
  84. Quirce, G. S., Freire, P., Fernandez, R. M., Davila, I., and Losada, E. Urticaria from caffeine. J.Allergy Clin Immunol. 1991;88(4):680-681. PubMed
  85. Wrenn, K. D. and Oschner, I. Rhabdomyolysis induced by a caffeine overdose. Ann.Emerg.Med. 1989;18(1):94-97. PubMed
  86. Pola, J., Subiza, J., Armentia, A., Zapata, C., Hinojosa, M., Losada, E., and Valdivieso, R. Urticaria caused by caffeine. Ann.Allergy 1988;60(3):207-208.
  87. Caballero, T., Garcia-Ara, C., Pascual, C., Diaz-Pena, J. M., and Ojeda, A. Urticaria induced by caffeine. J.Investig.Allergol.Clin Immunol. 1993;3(3):160-162.
  88. Smits, P., Temme, L., and Thien, T. The cardiovascular interaction between caffeine and nicotine in humans. Clin Pharmacol Ther 1993;54(2):194-204. PubMed
  89. MacKenzie, T., Comi, R., Sluss, P., Keisari, R., Manwar, S., Kim, J., Larson, R., and Baron, J. A. Metabolic and hormonal effects of caffeine: randomized, double-blind, placebo-controlled crossover trial. Metabolism 2007;56(12):1694-1698. PubMed
  90. Moisey, L. L., Robinson, L. E., and Graham, T. E. Consumption of caffeinated coffee and a high carbohydrate meal affects postprandial metabolism of a subsequent oral glucose tolerance test in young, healthy males. Br.J Nutr. 2010;103(6):833-841. PubMed
  91. Chroscinska-Krawczyk, M., Ratnaraj, N., Patsalos, P. N., and Czuczwar, S. J. Effect of caffeine on the anticonvulsant effects of oxcarbazepine, lamotrigine and tiagabine in a mouse model of generalized tonic-clonic seizures. Pharmacol Rep. 2009;61(5):819 PubMed
  92. Simmonds, M. J., Minahan, C. L., and Sabapathy, S. Caffeine improves supramaximal cycling but not the rate of anaerobic energy release. Eur.J Appl Physiol 2010;109(2):287-295. PubMed
  93. Buscemi, S., Verga, S., Batsis, J. A., Donatelli, M., Tranchina, M. R., Belmonte, S., Mattina, A., Re, A., and Cerasola, G. Acute effects of coffee on endothelial function in healthy subjects. Eur.J Clin Nutr. 2010;64(5):483-489. PubMed
  94. Rigato, I., Blarasin, L., and Kette, F. Severe hypokalemia in 2 young bicycle riders due to massive caffeine intake. Clin J Sport Med. 2010;20(2):128-130. PubMed
  95. Ernest, D., Chia, M., and Corallo, C. E. Profound hypokalaemia due to Nurofen Plus and Red Bull misuse. Crit Care Resusc. 2010;12(2):109-110. DOI
  96. Clausen, T. Hormonal and pharmacological modification of plasma potassium homeostasis. Fundam.Clin Pharmacol 2010;24(5):595-605. PubMed
  97. Orozco-Gregorio, H., Mota-Rojas, D., Bonilla-Jaime, H., Trujillo-Ortega, M. E., Becerril-Herrera, M., Hernandez-Gonzalez, R., and Villanueva-Garcia, D. Effects of administration of caffeine on metabolic variables in neonatal pigs with peripartum asphyxia PubMed
  98. du, Boisgueheneuc F., Lannuzel, A., Caparros-Lefebvre, D., and De Broucker, T. [Cerebral infarction in a patient consuming MaHuang extract and guarana]. Presse Med 2-3-2001;30(4):166-167.
  99. Baghkhani, L. and Jafari, M. Cardiovascular adverse reactions associated with Guarana: is there a causal effect? J.Herb.Pharmacother. 2002;2(1):57-61. DOI
  100. Haller, C. A., Jacob, P., and Benowitz, N. L. Short-term metabolic and hemodynamic effects of ephedra and guarana combinations. Clin.Pharmacol.Ther. 2005;77(6):560-571. PubMed
  101. Bydlowski, S. P., D'Amico, E. A., and Chamone, D. A. An aqueous extract of guarana (Paullinia cupana) decreases platelet thromboxane synthesis. Braz.J.Med.Biol.Res. 1991;24(4):421-424.
  102. Bydlowski, S. P., Yunker, R. L., and Subbiah, M. T. A novel property of an aqueous guarana extract (Paullinia cupana): inhibition of platelet aggregation in vitro and in vivo. Braz.J.Med.Biol.Res. 1988;21(3):535-538.
  103. Galduroz, J. C. and Carlini, E. A. The effects of long-term administration of guarana on the cognition of normal, elderly volunteers. Sao Paulo Med.J. 1996;114(1):1073-1078. PubMed
  104. Mattei, R., Dias, R. F., Espinola, E. B., Carlini, E. A., and Barros, S. B. Guarana (Paullinia cupana): toxic behavioral effects in laboratory animals and antioxidants activity in vitro. J.Ethnopharmacol. 1998;60(2):111-116.
  105. Chamone, D. A., Silva, M. I., Cassaro, C., Bellotti, G., Massumoto, C. M., and Fujimura, A. Y. Guaraná (Paullinia cupana) inhibits aggregation in whole blood. Thrombosis and Haemostasis 1987;58(1):474.
  106. van der Hoeven N, Visser I, Schene A, van den Born BJ. Severe hypertension related to caffeinated coffee and tranylcypromine: a case report. Ann Intern Med. 2014 May 6;160(9):657-8. doi: 10.7326/L14-5009-8. No abstract available. PubMed
  107. del Giglio AB, Cubero Dde I, Lerner TG, Guariento RT, de Azevedo RG, Paiva H, Goldman C, Carelli B, Cruz FM, Schindler F, Pianowski L, de Matos LL, del Giglio A. Purified dry extract of Paullinia cupana (guaraná) (PC-18) for chemotherapy-related fatigue i
  108. Palma CG, Lera AT, Lerner T, de Oliveira MM, de Borta TM, Barbosa RP, Brito GM, Guazzelli CA, Cruz FJ, del Giglio A. Guarana (Paullinia cupana) Improves Anorexia in Patients with Advanced Cancer. J Diet Suppl. 2016;13(2):221-31.
  109. Wikoff D, Welsh BT, Henderson R, et al. Systematic review of the potential adverse effects of caffeine consumption in healthy adults, pregnant women, adolescents, and children. Food Chem Toxicol 2017;109:585-648. PubMed
  110. de Araujo DP, Pereira PTVT, Fontes AJC, et al. The use of guarana (Paullinia cupana) as a dietary supplement for fatigue in cancer patients: a systematic review with a meta-analysis. Support Care Cancer 2021;29(12):7171-7182. PubMed
  111. Zheng KH, Zhu K, Wactawski-Wende J, et al. Caffeine intake from coffee and tea and invasive breast cancer incidence among postmenopausal women in the Women's Health Initiative. Int J Cancer 2021;149(12):2032-2044. PubMed
  112. Wang S, Li X, Yang Y, et al. Does coffee, tea and caffeine consumption reduce the risk of incident breast cancer? A systematic review and network meta-analysis. Public Health Nutr 2021;24(18):6377-6389. PubMed
  113. Alshabi AM, Alkahtani SA, Shaikh IA, Habeeb MS. Caffeine modulates pharmacokinetic and pharmacodynamic profiles of pioglitazone in diabetic rats: Impact on therapeutics. Saudi Med J 2021;42(2):151-160. PubMed
  114. Gleason JL, Sundaram R, Mitro SD, et al. Association of maternal caffeine consumption during pregnancy with child growth. JAMA Netw Open. 2022;5(10):e2239609. 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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