FlexSure Ingredients & Drug Interactions
What is this page for?
First and foremost: checking FlexSure 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
FlexSure is a dietary supplement by Vital g-Netics with 4 active ingredients. Its ingredients are commonly taken for low libido and sexual function, energy and stamina, menopause symptoms.Based on those ingredients, 1,126 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Ashancaria(TM) Cat's Claw extract, Boswellia extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against FlexSure by Vital g-Netics
Ask about any prescription or over-the-counter medication and we check it for interactions with FlexSure by Vital g-Netics — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
Ask the Pharmacist
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HelloPharmacist Scorecard of FlexSure by Vital g-Netics
Four independent checks of what is known — a summary of the available information, not a grade of the product itself.
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
The stated purpose hasn't been mapped to our evidence data yet.
Why this rating?
- We haven't mapped this product's purpose to our evidence data yet — it'll be graded on the next content refresh.
Every active ingredient lists its own amount on the label.
Why this rating?
- The label discloses an exact amount for 4 of its 4 active ingredients.
- No proprietary blends here — you can verify the dose of every single component.
The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.
Why this rating?
- 2 of the 3 matched ingredients can interact with medications — Boswellia Serrata, Cat's Claw.
- The most serious interaction on file is rated Moderate.
- Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs.
- For scale: 1,127 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.
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.
HelloPharmacist summaryFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Assessment coverage: 3 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 22, 2015.
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
General information
Key facts about FlexSure, straight from the product label.
| Brand | Vital g-Netics |
|---|---|
| Barcode (UPC) | 698832492904 |
| Net contents | 90 Capsule(s) |
| Market status | Off market |
| Date entered into DSLD | May 22, 2015 |
| DSLD ID | 45689 |
| Product type | Botanical With Nutrients |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Sugar Free |
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 FlexSure by Vital g-Netics, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Leucine | 700 mg | -- |
| Macandeum(TM) Maca extract | 1000 mg | -- |
| Ashancaria(TM) Cat's Claw extract | 300 mg | -- |
| Boswellia extract | 200 mg | -- |
Other ingredients: Gelatin Capsule, Magnesium Stearate
Tap any ingredient to jump to its full detail below.
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
NEW SCIENTIFIC DISCOVERY WORLD'S FIRST CLINICALLY PROVEN RESTORATIVE JOINT HEALTH FORMULA
RESULTS WITHIN 7 DAYS
30 DAY SUPPLY
SATISFACTION GUARANTEED
Product safety is as important as product effectiveness. Vital g-Netics clinically tests all of our products using multiple testing methods to be certain our products are not only effective, but safe to use.
RESTORES THE BODY'S ABILITY TO PRODUCE ITS OWN GLUCOSAMINE, CHONDROITIN AND COLLAGEN NATURALLY*
{Chart} Human Cartilage Cells Before Flexsure After Flexsure PRODUCTION: % HEALTHY GLUCOSAMINE/CHONDROITIN 37 170 COLLAGEN 32 200
INHIBITS THE GENES FROM ACTIVATING THAT CAN CAUSE LOSS OF MUSCLE MASS AND FURTHER JOINT DAMAGE*
{Chart} Human Cartilage Cells Before Flexsure After Flexsure DEGENERATIVE JOINT HEALTH GENE ACTIVITY
AS WE AGE, KEY GENE FUNCTIONS CHANGE & WEAKEN THE BODY'S NATURAL JOINT REPAIR PROCESS*
Our bodies have genes that produce glucosamine, chondroitin and collagen to repair damaged cartilage and maintain joint health. As our bodies age, the functioning level of the genes that produce these critical substances declines significantly, reducing our body's natural ability to repair damaged cartilage and maintain joint health.* Furthermore, our body creates a degenerative condition that can further reduce joint health whenever we suffer joint damage, or simply due to aging.* This condition can "switch on" other genes that cause joint inflammation and stress, and increase the loss of muscle mass and muscle performance.*
Taking glucosamine, chondroitin and collagen supplements provide limited benefits because our bodies have to digest, absorb, and process them. Producing these critical substances in our body is much more efficient and effective than taking supplements.* Flexsure is clinically proven to reactivate the body's natural ability to produce its own glucosamine, chondroitin and collagen, and help restore the natural joint repair process.* Flexsure also helps to protect against further joint damage and muscle loss!*
RESTORATIVE JOINT HEALTH HELPS REACTIVATE YOUR BODY'S NATURAL JOINT REPAIR PROCESS
Restores your body's ability to produce glucosamine, chondroitin & collagen naturally* Better than glucosamine, chondroitin & collagen supplements* Safe & effective
FDA Statement of Identity
DIETARY SUPPLEMENT
Formulation
~ SHELLFISH FREE ~ GLUCOSAMINE FREE ~ CHONDROITIN FREE ~ COLLAGEN FREE ~ SUGAR FREE ~ GLUTEN FREE ~ GMO FREE
Formula
~ DIABETIC SAFE
Suggested/Recommended/Usage/Directions
Directions: For adults, take three capsules daily. You may take three capsules together or spread throughout the day. For best results, take the full dosage of Flexsure daily, on a continual basis.
Precautions
Caution: KEEP OUT OF REACH OF CHILDREN.
Pregnant or lactating women and anyone taking prescription medication should consult a doctor before using any product.
Do not use if neckband seal is broken.
Storage
Keep tightly closed. Store in a cool, dry place below 85(0)F.
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.
Brand IP Statement(s)
Flexsure is a registered trademark of Vital g-Netics. All Rights Reserved.
FLEXSURE(R) IS CLINICALLY PROVEN SAFE & EFFECTIVE
WHY IS FLEXSURE(R) BETTER THAN TRADITIONAL JOINT SUPPLEMENTS?
Seals/Symbols
Proudly Made in the USA
General
SG16-2986B-REV2
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
FlexSure by Vital g-Netics label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in FlexSure by Vital g-Netics
These are the 4 active ingredients this product is made of. Select any to open its full monograph.
Serving size3 Capsule(s) Dosage formCapsule 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-Leucine
Macandeum(TM) Maca extract
No knowninteractions
Maca is a nutrient-rich Andean root often used for energy, libido, and menopause symptoms. Early studies suggest it may modestly help sexual desire an...
Macandeum(TM) Maca extract monograph & interactionsAshancaria(TM) Cat's Claw extract
Interacts with962 drugs
Cat's claw is a South American vine traditionally used for inflammation, joint pain, and immune support. Some small studies hint it may help with arth...
Ashancaria(TM) Cat's Claw extract monograph & interactionsBoswellia extract
Interacts with952 drugs
Boswellia serrata is a tree resin used in traditional medicine, mainly for joint pain and inflammation. Some studies suggest it may help with osteoart...
Boswellia extract monograph & interactionsOther (inactive) ingredients: Gelatin Capsule, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.
FlexSure by Vital g-Netics Drug Interactions
FlexSure contains 4 ingredients, and 2 of them have known drug interactions. Altogether they interact with 1,126 medications. Here’s the picture, then you can look up your own drug.
Want to check YOUR meds against FlexSure?
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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in FlexSure interact with 1,126 drugs. Click any drug to see the details.
2 of the 4 ingredients in FlexSure interact with drugs. Each result below shows which ingredient is responsible. Ashancaria(TM) Cat's Claw extract Boswellia extract
6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, cat's claw might interfere with immunosuppressive therapy.
Read the full Ashancaria(tm) Cat's Claw Extract + 6-mercaptopurine interactionBoswellia ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, Boswellia serrata might alter the effects of immunosuppressive drugs.
Read the full Boswellia Extract + 6-mercaptopurine interactionAdo-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Ado-trastuzumab Emtansine interactionBoswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Ado-trastuzumab Emtansine interactionAbciximabReoPro
How Abciximab interacts with FlexSure — through 1 ingredient. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, cat's claw may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Ashancaria(tm) Cat's Claw Extract + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Abemaciclib interactionBoswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Abemaciclib interactionAbiraterone
How Abiraterone interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Abiraterone interactionBoswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Abiraterone Acetate interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractImmunosuppressants, Cytochrome P450 2c9 (cyp2c9) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might alter the effects of immunosuppressive drugs.
Read the full Boswellia Extract + Abrocitinib interactionAshancaria(tm) Cat's Claw ExtractAnticoagulant/antiplatelet Drugs, Immunosuppressants Moderate
Interaction Summary
Theoretically, cat's claw may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Ashancaria(tm) Cat's Claw Extract + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acalabrutinib interactionBoswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Acalabrutinib interactionAcebutololRhotral, Sectral
How Acebutolol interacts with FlexSure — through 1 ingredient. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taking cat's claw with antihypertensive drugs might increase the risk of hypotension.
Read the full Ashancaria(tm) Cat's Claw Extract + Acebutolol interactionAcenocoumarolSintrom
How Acenocoumarol interacts with FlexSure — through 1 ingredient. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, cat's claw may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Ashancaria(tm) Cat's Claw Extract + Acenocoumarol interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with FlexSure — through 1 ingredient. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Aspirin interactionAshancaria(tm) Cat's Claw ExtractAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, cat's claw may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractAnticoagulant/antiplatelet Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Aspirin, Caffeine interactionBoswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with FlexSure — through 1 ingredient. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with FlexSure — through 1 ingredient. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Butalbital, Caffeine interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Acetaminophen, Butalbital, Caffeine, Codeine interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with FlexSure — through 1 ingredient. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP2D6 substrates.
Read the full Boswellia Extract + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with FlexSure — through 1 ingredient. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP2D6 substrates.
Read the full Boswellia Extract + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Acetaminophen, Caffeine, Codeine interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Caffeine, Dihydrocodeine interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Ashancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Caffeine, Isometheptene interactionBoswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Caffeine, Pyrilamine interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
Read the full Boswellia Extract + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP2D6 substrates.
Read the full Boswellia Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Boswellia Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with FlexSure — through 2 ingredients. Tap an ingredient for the detail:
Boswellia ExtractCytochrome P450 2d6 (cyp2d6) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, Boswellia serrata might increase the levels of CYP2D6 substrates.
Read the full Boswellia Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAshancaria(tm) Cat's Claw ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Read the full Ashancaria(tm) Cat's Claw Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in FlexSure 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.
Ashancaria(TM) Cat's Claw extract
Anticoagulant/Antiplatelet Drugs
Theoretically, cat's claw may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Cat's claw contains rhynchophylline and isorhynchophylline. Animal research suggests that these alkaloids can inhibit platelet aggregation. This interaction has not been reported in humans.
Antihypertensive Drugs
Theoretically, taking cat's claw with antihypertensive drugs might increase the risk of hypotension.
Cat's claw contains rhynchophylline. In vitro and animal research suggests that rhynchophylline can lower blood pressure. This interaction has not been reported in humans.
Calcium Channel Blockers
Theoretically, taking cat's claw with calcium channel blockers might increase the risk of hypotension.
Cat's claw contains various alkaloids, including rhynchophylline, isorhynchophylline, corynoxeine, and isocorynoxiene. Animal research suggests that these alkaloids can lower blood pressure by acting as calcium channel blockers. This interaction has not been reported in humans.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.
Cat's claw may affect the clearance of drugs metabolized by CYP3A4. In vitro research shows that cat's claw can inhibit CYP3A4 enzymes. In one case report, a patient taking cat's claw (at an unspecified dose) experienced increased serum levels of atazanavir, ritonavir, and saquinavir, all of which are CYP3A4 substrates. Levels returned to normal 15 days after discontinuation of the cat's claw supplement, suggesting inhibition of CYP3A4 by cat's claw. In contrast, animal research suggests that rhynchophylline, an alkaloid contained in cat's claw, induces CYP3A expression and accelerates the metabolism of nirmatrelvir, the active component in the nirmatrelvir/ritonavir combination product.
Immunosuppressants
Theoretically, cat's claw might interfere with immunosuppressive therapy.
In human and laboratory research, cat's claw has been shown to have immunostimulating activity. It stimulates phagocytosis and increases respiratory cellular activity and the mobility of leukocytes. Theoretically, this could interfere with the activity of immunosuppressant medications.
Nirmatrelvir/Ritonavir (Paxlovid)
Theoretically, cat's claw may decrease the levels of nirmatrelvir.
Cat's claw contains rhynchophylline. Animal research suggests that this alkaloid induces CYP3A expression, thereby accelerating the metabolism of nirmatrelvir, the active component in the nirmatrelvir/ritonavir combination product. This interaction has not been reported in humans.
Boswellia extract
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP1A2 enzymes.
Cytochrome P450 2C19 (Cyp2C19) Substrates
Theoretically, Boswellia serrata might increase the levels of CYP2C19 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP2C19 enzymes.
Cytochrome P450 2C9 (Cyp2C9) Substrates
Theoretically, Boswellia serrata might increase the levels of CYP2C9 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP2C9 enzymes.
Cytochrome P450 2D6 (Cyp2D6) Substrates
Theoretically, Boswellia serrata might increase the levels of CYP2D6 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP2D6 enzymes.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP3A4 enzymes. Other in vitro research shows that Boswellia serrata extract inhibits CYP3A4 enzymes at most concentrations, although it may modestly induce enzyme activity at low concentrations.
Immunosuppressants
Theoretically, Boswellia serrata might alter the effects of immunosuppressive drugs.
Some in vitro research suggests that Boswellia serrata extracts might inhibit mediators of autoimmune disorders such as leukotrienes and reduce production of antibodies and cell-mediated immunity. However, other in vitro research suggests that, when coupled with calcium ions, boswellic acids containing the keto group have immunostimulant properties within specific cell signaling pathways.
Brand information
Manufacturer and brand details for FlexSure, from the product label.
FlexSure by Vital g-Netics: Common Questions
Does FlexSure by Vital g-Netics interact with any medications?
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Where does this information come from?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind FlexSure’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Maca
Maca is a nutrient-rich Andean root often used for energy, libido, and menopause symptoms. Early studies suggest it may modestly help sexual desire and some menopause symptoms, but the evide...
Read the full Maca monograph → Herb & supplement monographCat's Claw
Interacts with 962 drugsCat's claw is a South American vine traditionally used for inflammation, joint pain, and immune support. Some small studies hint it may help with arthritis symptoms, but the overall evidence...
Read the full Cat's Claw monograph → Herb & supplement monographBoswellia Serrata
Interacts with 952 drugsBoswellia serrata is a tree resin used in traditional medicine, mainly for joint pain and inflammation. Some studies suggest it may help with osteoarthritis symptoms, but the overall evidenc...
Read the full Boswellia Serrata monograph →Sources & How We Checked
FlexSure'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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 33 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.
Maca 1 reference
- Valerio, L. G., Jr. and Gonzales, G. F. Toxicological aspects of the South American herbs cat's claw (Uncaria tomentosa) and Maca (Lepidium meyenii) : a critical synopsis. Toxicol.Rev 2005;24(1):11-35. PubMed
Cat's Claw 16 references
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- 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
- Sandoval M, Charbonnet RM, Okuhama NN, et al. Cat's claw inhibits TNFalpha production and scavenges free radicals: role in cytoprotection. Free Radic Biol Med 2000;29:71-78.
- Müller AC, Kanfer I. Potential pharmacokinetic interactions between antiretrovirals and medicinal plants used as complementary and African traditional medicines. Biopharm Drug Dispos. 2011;32(8):458-70. PubMed
- Sheng, Y., Bryngelsson, C., and Pero, R. W. Enhanced DNA repair, immune function and reduced toxicity of C-MED-100, a novel aqueous extract from Uncaria tomentosa. J Ethnopharmacol. 2000;69(2):115-126. PubMed
- Lamm, S., Sheng, Y., and Pero, R. W. Persistent response to pneumococcal vaccine in individuals supplemented with a novel water soluble extract of Uncaria tomentosa, C-Med-100. Phytomedicine 2001;8(4):267-274.
- Sheng, Y., Li, L., Holmgren, K., and Pero, R. W. DNA repair enhancement of aqueous extracts of Uncaria tomentosa in a human volunteer study. Phytomedicine 2001;8(4):275-282.
- Chen, C. X., Jin, R. M., Li, Y. K., Zhong, J., Yue, L., Chen, S. C., and Zhou, J. Y. Inhibitory effect of rhynchophylline on platelet aggregation and thrombosis. Zhongguo Yao Li Xue.Bao. 1992;13(2):126-130.
- Flythe, J. E., Rueda, J. F., Riscoe, M. K., and Watnick, S. Silicate nephrolithiasis after ingestion of supplements containing silica dioxide. Am.J.Kidney Dis. 2009;54(1):127-130. PubMed
- Zhou, J. and Zhou, S. Antihypertensive and neuroprotective activities of rhynchophylline: the role of rhynchophylline in neurotransmission and ion channel activity. J.Ethnopharmacol. 10-28-2010;132(1):15-27. PubMed
- Zhou, J. Y. and Zhou, S. W. Isorhynchophylline: A plant alkaloid with therapeutic potential for cardiovascular and central nervous system diseases. Fitoterapia 2012;83(4):617-626. PubMed
- Hemingway, S. R. and Phillipson, J. D. Proceedings: Alkaloids from S. American species of Uncaria (Rubiaceae). J.Pharm.Pharmacol. 1974;26 Suppl:113P.
- Hilepo, J. N., Bellucci, A. G., and Mossey, R. T. Acute renal failure caused by 'cat's claw' herbal remedy in a patient with systemic lupus erythematosus. Nephron 1997;77(3):361. PubMed
- De Paula LCL, Fonseca F, Perazzo F, et al. Uncaria tomentosa (cat's claw) improves quality of life in patients with advanced solid tumors. J Altern Complement Med. 2015;21(1):22-30.
- Portalatin G, Shettigar S, Carrion-Rodriguez A, et al. Ketogenic-Diet Shake Containing Uncaria tomentosa-Associated Acute Interstitial Nephritis. Case Rep Nephrol Dial 2022;12(3):219-225.
- Lei S, Guo A, Lu J, et al. Activation of PXR causes drug interactions with Paxlovid in transgenic mice. Acta Pharm Sin B 2023;13(11):4502-4510. PubMed
Boswellia Serrata 16 references
- Gupta I, Gupta V, Parihar A, et al. Effects of Boswellia serrata gum resin in patients with bronchial asthma: results of a double-blind, placebo-controlled, 6-week clinical study. Eur J Med Res 1998;3:511-4.
- Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
- Kimmatkar N, Thawani V, Hingorani L, et al. Efficacy and tolerability of Boswellia serrata extract in treatment of osteoarthritis of knee--a randomized double blind placebo controlled trial. Phytomedicine 2003;10:3-7. PubMed
- Liu JJ, Nilsson A, Oredsson S, et al. Boswellic acids trigger apoptosis via a pathway dependent on caspase-8 activation but independent on Fas/Fas ligand interaction in colon cancer HT-29 cells. Carcinogenesis 2002;23:2087-93. PubMed
- Wildfeuer A, Neu IS, Safayhi H, et al. Effects of boswellic acids extracted from a herbal medicine on the biosynthesis of leukotrienes and the course of experimental autoimmune encephalomyelitis. Arzneimittelforschung 1998;48:668-74.
- Gupta I, Parihar A, Malhotra P, et al. Effects of gum resin of Boswellia serrata in patients with chronic colitis. Planta Med 2001;67:391-5. PubMed
- Sengupta K, Alluri KV, Satish AR, et al. A double blind, randomized, placebo controlled study of the efficacy and safety of 5-Loxin. Arthritis Res Ther 2008;10:R85.
- Sengupta K, Krishnaraju AV, Vishal AA, et al. Comparative efficacy and tolerability of 5-Loxin and Aflapin against osteoarthritis of the knee: a double blind, randomized, placebo controlled clinical study. Int J Med Sci 2010;7:366-77.
- Ernst E. Frankincense: systematic review. BMJ 2008;337:a2813. PubMed
- Kirste S, Treier M, Wehrle SJ, et al. Boswellia serratea extract acts on cerebral edema in patients irradiated for brain tumors: a prospective, randomized, placebo-controlled, double-blind pilot trial. Cancer 2011;117:3788-95.
- Frank A, Unger M. Analysis of frankincense from various Boswellia species with inhibitory activity on human drug metabolising cytochrome P450 enzymes using liquid chromatography mass spectrometry after automated on-line extraction. J Chromatogr A 2006;111 PubMed
- Altmann A, Poeckel D, Fischer L, et al. Coupling of boswellic acid-incuded Ca2+ mobilisation and MAPK activation to lipid metabolism and peroxide formation in human leucocytes. Br J Pharmacol 2004;141:223-32.
- El Fortia, M., Badi, H., Elalem, Kh, Kadiki, O., and Topov, Y. Olibanum bezoar: complication of a traditional popular medicine. East Mediterr.Health J 2006;12(6):927-929.
- Meshkat S, Mahmoodi Baram S, Rajaei S, et al. Boswellia serrata extract shows cognitive benefits in a double-blind, randomized, placebo-controlled pilot clinical trial in individuals who suffered traumatic brain injury. Brain Inj 2022;36(4):553-559. PubMed
- Haron MH, Dale O, Martin K, et al. Evaluation of the Herb-Drug Interaction Potential of Commonly Used Botanicals on the US Market with Regard to PXR- and AhR-Mediated Influences on CYP3A4 and CYP1A2. J Diet Suppl 2022. PubMed
- Valente IVB, Garcia D, Abbott A, et al. The anti-proliferative effects of a frankincense extract in a window of opportunity phase ia clinical trial for patients with breast cancer. Breast Cancer Res Treat 2024;204(3):521-530. PubMed
Parts of this content are provided by the Therapeutic Research Center, LLC.
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