LAS-JB Ingredients & Drug Interactions
by Pure Herbs
What is this page for?
First and foremost: checking LAS-JB 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
LAS-JB is a dietary supplement by Pure Herbs with 5 active ingredients. Its ingredients are commonly taken for blood sugar control, boosting breast milk supply, high cholesterol.Based on those ingredients, 2,130 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Marshmallow, Fennel, Fenugreek. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against LAS-JB by Pure Herbs
Ask about any prescription or over-the-counter medication and we check it for interactions with LAS-JB by Pure Herbs — 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
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HelloPharmacist Scorecard of LAS-JB by Pure Herbs
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.
What’s inside
Low disclosure
This capsule lists five ingredients, including a proprietary blend, and the blend's contents are not itemized in our data. The named active ingredients are fenugreek, fennel, horseradish, mullein, and marshmallow, each listed for its own traditional use.
Gelatin is listed as an inactive ingredient.
Does it work?
Moderate evidence
Fenugreek is rated Possibly Effective for sexual dysfunction, sexual arousal, painful periods (dysmenorrhea), and diabetes. Fennel is rated Possibly Effective for painful periods, and its other listed uses have insufficient reliable evidence to rate.
Horseradish, mullein, and marshmallow have insufficient reliable evidence to rate for every listed use.
How safe is it?
Well-documented data
Fenugreek is generally well tolerated in food amounts, but supplement doses can cause stomach upset, bloating, diarrhea, and low blood sugar (hypoglycemia). Rare but serious severe allergic reactions have been reported.
Fennel is generally well tolerated, with possible stomach discomfort, sun sensitivity, and rare seizures. Large amounts of horseradish can cause stomach upset and bloody vomiting, and mullein has caused skin reactions in case reports.
Marshmallow has no adverse effects listed in our data. Fenugreek's pregnancy entry is Likely Unsafe, so the safety data advises against it.
Fennel's pregnancy entry is Possibly Unsafe. Horseradish has no pregnancy entry on file.
Its lactation entries conflict, so talk with your doctor or pharmacist. Mullein and marshmallow have no pregnancy or lactation entries on file, although their safety notes advise caution.
Meds to double-check
Moderate interaction found
Double-check blood thinners and antiplatelet drugs first, since fenugreek and fennel are rated Moderate and marshmallow and mullein are rated Minor. Diabetes medicines, warfarin, and the other drug types above also carry Moderate interactions.
Check your exact medications with the search tool on this page, and confirm with your own doctor or pharmacist before combining.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
This product may interest people looking for fenugreek or fennel for the uses rated Possibly Effective. If you take blood thinners, diabetes medicines, thyroid hormone, lithium, contraceptives, or hormone therapy, be careful and talk it over with your own doctor or pharmacist first.
If you are pregnant or breastfeeding, speak with your own healthcare provider before using it.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 5 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Feb 23, 2025.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about LAS-JB, straight from the product label.
| Brand | Pure Herbs |
|---|---|
| Net contents | 200 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Feb 23, 2025 |
| DSLD ID | 327247 |
| Product type | Botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other |
| Intended target group(s) | Adult (18 - 50 Years), Women (not pregnant or lactating) |
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 LAS-JB by Pure Herbs, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Proprietary Blend | 700 mg | -- |
| Fenugreek | 0 NP | -- |
| Fennel | 0 NP | -- |
| Horseradish | 0 NP | -- |
| Mullein | 0 NP | -- |
| Marshmallow | 0 NP | -- |
Other ingredients: Gelatin
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.
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement, take two capsules daily or as directed by your healthcare practitioner.
Precautions
Warning: Consuming this product can expose you to lead, a chemical known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.P65warnings.ca.gov/food.
Not intended for use by pregnant or nursing women. If you have a medical condition or are taking medication, consult your doctor prior to use.
Discontinue use and consult with your doctor if any adverse reactions occur.
Keep out of reach of children
Brand IP Statement(s)
Pure Herbs, Ltd. Natural Herbal Extracts
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
LAS-JB by Pure Herbs 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 LAS-JB by Pure Herbs
These are the 5 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container100 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.
Proprietary Blend
- › Fenugreek
- › Fennel
- › Horseradish
- › Mullein
- › Marshmallow
Other (inactive) ingredients: Gelatin. These complete the product’s ingredient list but are not active constituents.
LAS-JB by Pure Herbs Drug Interactions
HelloPharmacist Interaction Report
Pure Herbs LAS-JB interacts with several medications.
Fenugreek, fennel, horseradish, mullein, and marshmallow each have documented interactions. The most serious one we hold is fenugreek with warfarin, a blood thinner (anticoagulant), rated Moderate.
Fenugreek might add to warfarin's effects and raise the international normalized ratio (INR), a measure of how long your blood takes to clot.
Read the full breakdown — every affected drug type, severity by severity
Fenugreek and fennel may also add to blood thinners and antiplatelet drugs, raising bleeding risk (Moderate). Fenugreek may add to the blood-sugar-lowering effect of diabetes drugs (Moderate).
Fenugreek may also lower levels of theophylline, clopidogrel, metoprolol, phenytoin, and sildenafil (all Moderate). Fennel may weaken contraceptives and hormone therapy, change levels of ciprofloxacin and tamoxifen, and affect drugs broken down by the CYP3A4 liver enzyme (all Moderate).
Horseradish may interfere with thyroid hormone (Moderate), and marshmallow may raise lithium levels (Moderate). Mullein and marshmallow carry Minor interactions with blood thinners, and marshmallow may affect absorption of oral drugs (Minor).
Altogether, these interactions span 2,131 individual medications.
The proprietary blend is listed as a container, and we do not hold interaction data for the blend as a whole. Check your exact medications with the search tool on this page, and confirm with your own doctor or pharmacist before combining.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against LAS-JB?
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 LAS-JB interact with 2,130 drugs. Click any drug to see the details.
5 of the 5 ingredients in LAS-JB interact with drugs. Each result below shows which ingredient is responsible. Marshmallow Fennel Fenugreek Mullein Horseradish
MaribavirLivtencity
How Maribavir interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Maribavir interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Maribavir interactionMavacamtenCamzyos
How Mavacamten interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Mavacamten interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Mavacamten interactionMedroxyprogesteroneAmen, Depo-Provera, Depo-subQ Provera 104, Provera
How Medroxyprogesterone interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Medroxyprogesterone interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Medroxyprogesterone interactionMedroxyprogesterone AcetateCurretab, Cycrin, Depo-Provera CI, Proclim
How Medroxyprogesterone Acetate interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Medroxyprogesterone Acetate interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Medroxyprogesterone Acetate interactionMedroxyprogesterone Acetate, Oestrogens, ConjugatedPremique
How Medroxyprogesterone Acetate, Oestrogens, Conjugated interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates, Estrogens Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Medroxyprogesterone Acetate, Oestrogens, Conjugated interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Medroxyprogesterone Acetate, Oestrogens, Conjugated interactionMemantine, DonepezilNamzaric
How Memantine, Donepezil interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Memantine, Donepezil interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Memantine, Donepezil interactionMenotropinsMenopur, Repronex
How Menotropins interacts with LAS-JB — through 1 ingredient. Tap an ingredient for the detail:
HorseradishThyroid Hormone Moderate
Interaction Summary
Theoretically, horseradish might interfere with the effects of thyroid hormone.
Read the full Horseradish + Menotropins interactionMephenytoinMesantoin
How Mephenytoin interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekPhenytoin (dilantin) Moderate
Interaction Summary
Theoretically, fenugreek might decrease plasma levels of phenytoin.
Read the full Fenugreek + Mephenytoin interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Mephenytoin interactionMestranol, NorethindroneNecon 1/50, Nelova 1/50M, Norethin 1/50, Norethin 1/50M, Norinyl 1 50 21 Day, Ortho Novum 1 Plus 50 +2 more
How Mestranol, Norethindrone interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelContraceptive Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, taking large amounts of fennel might decrease the effects of contraceptive drugs due to competition for estrogen receptors.
Read the full Fennel + Mestranol, Norethindrone interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Mestranol, Norethindrone interactionMestranol, NorethynodrelEnovid-E
How Mestranol, Norethynodrel interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates, Contraceptive Drugs Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Mestranol, Norethynodrel interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Mestranol, Norethynodrel interactionMetforminGlucophage, Metformin
How Metformin interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Read the full Fenugreek + Metformin interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Metformin interactionMetformin HydrochlorideRiomet ER
How Metformin Hydrochloride interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Read the full Fenugreek + Metformin Hydrochloride interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Metformin Hydrochloride interactionMetformin XrGlucophage XR
How Metformin Xr interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Read the full Fenugreek + Metformin Xr interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Metformin Xr interactionMetformin, LinagliptinJentadueto
How Metformin, Linagliptin interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Read the full Fenugreek + Metformin, Linagliptin interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Metformin, Linagliptin interactionMetformin, RosiglitazoneAvandamet
How Metformin, Rosiglitazone interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Read the full Fenugreek + Metformin, Rosiglitazone interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Metformin, Rosiglitazone interactionMetformin, SitagliptinJanumet, Janumet XR
How Metformin, Sitagliptin interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Read the full Fenugreek + Metformin, Sitagliptin interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Metformin, Sitagliptin interactionMethadoneDolophine
How Methadone interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Methadone interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Methadone interactionMethylprednisoloneMedrol, Medrol Dosepak
How Methylprednisolone interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Methylprednisolone interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Methylprednisolone interactionMetoprololLopressor, Toprol XL
How Metoprolol interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekMetoprolol (toprol), Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, fenugreek seed might have additive hypotensive effects when used with metoprolol.
Read the full Fenugreek + Metoprolol interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Metoprolol interactionMiconazoleAcorvio, Daktarin, Micatin, Monistat, Zeasorb-AF
How Miconazole interacts with LAS-JB — through 1 ingredient. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Miconazole interactionMiconazole, Zinc Oxide, PetrolatumVusion
How Miconazole, Zinc Oxide, Petrolatum interacts with LAS-JB — through 1 ingredient. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Miconazole, Zinc Oxide, Petrolatum interactionMidazolamNayzilam, Seizalam, Versed
How Midazolam interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Midazolam interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Midazolam interactionMidostaurinRydapt
How Midostaurin interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Midostaurin interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Midostaurin interactionMifepristoneKorlym, Mifeprex
How Mifepristone interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Mifepristone interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Mifepristone interactionMiglitolGlyset
How Miglitol interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FenugreekAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Read the full Fenugreek + Miglitol interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Miglitol interactionMinocyclineAcnamino MR, Aknemin, Amzeeq, Arestin Miscrosperes, Dynacin, Minocin +6 more
How Minocycline interacts with LAS-JB — through 4 ingredients. Tap an ingredient for the detail:
FenugreekAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, fenugreek might have additive effects when used with anticoagulant or antiplatelet drugs.
Read the full Fenugreek + Minocycline interactionFennelAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, fennel might increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
Read the full Fennel + Minocycline interactionMarshmallowOral Drugs, Anticoagulant/antiplatelet Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Minocycline interactionMulleinAnticoagulant/antiplatelet Drugs Minor
Interaction Summary
Lab tests on extracts from different parts of common and dense-flowered mullein plants show that they do have some blood-thinning effects, as they increase the time it takes for blood to clot.
Read the full Mullein + Minocycline interactionMirtazapineRemeron
How Mirtazapine interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Mirtazapine interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Mirtazapine interactionMitapivatPyrukynd
How Mitapivat interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Mitapivat interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Mitapivat interactionMobocertinib SuccinateExkivity
How Mobocertinib Succinate interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Mobocertinib Succinate interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Mobocertinib Succinate interactionModafinilAlertec, Provigil, Sparlon
How Modafinil interacts with LAS-JB — through 2 ingredients. Tap an ingredient for the detail:
FennelCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
Read the full Fennel + Modafinil interactionMarshmallowOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow + Modafinil interactionEach ingredient & the kinds of drugs it affects
For each ingredient in LAS-JB 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.
Marshmallow
Lithium
Theoretically, due to potential diuretic effects, marshmallow might reduce excretion and increase levels of lithium.
Marshmallow is thought to have diuretic properties. To avoid lithium toxicity, the dose of lithium might need to be decreased when used with marshmallow.
Anticoagulant/Antiplatelet Drugs
Theoretically, marshmallow flower might have antiplatelet effects.
Animal research suggests that marshmallow flower extract has antiplatelet effects. However, the root and leaf of marshmallow, not the flower, are the plant parts most commonly found in dietary supplements. Theoretically, use of marshmallow flower with anticoagulant/antiplatelet drugs can have additive effects, and might increase the risk for bleeding in some patients.
Oral Drugs
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Marshmallow contains mucilage which can affect oral drug absorption. To avoid changes in absorption, take marshmallow 30-60 minutes after oral medications.
Fennel
Anticoagulant/Antiplatelet Drugs
Theoretically, fennel might increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
Animal research suggests that fennel oil has antithrombotic and antiplatelet effects.
Ciprofloxacin (Cipro)
Theoretically, fennel might decrease the levels and clinical effects of ciprofloxacin.
Animal research shows that fennel reduces ciprofloxacin bioavailability by nearly 50%, possibly due to the metal cations such as calcium, iron, and magnesium contained in fennel. This study also found that fennel increased tissue distribution and slowed elimination of ciprofloxacin.
Contraceptive Drugs
Theoretically, taking large amounts of fennel might decrease the effects of contraceptive drugs due to competition for estrogen receptors.
Some constituents of fennel have estrogenic activity.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.
In vitro research suggests that fennel inhibits CYP3A4 enzyme activity. This effect has not been reported in humans.
Estrogens
Theoretically, taking large amounts of fennel might interfere with hormone replacement therapy due to competition for estrogen receptors.
Some constituents of fennel have estrogenic activity.
Tamoxifen (Nolvadex)
Theoretically, taking large amounts of fennel might decrease the antiestrogenic effect of tamoxifen.
Some constituents of fennel have estrogenic activity, which may interfere with the antiestrogenic activity of tamoxifen.
Fenugreek
Anticoagulant/Antiplatelet Drugs
Theoretically, fenugreek might have additive effects when used with anticoagulant or antiplatelet drugs.
Some of the constituents in fenugreek have antiplatelet effects in animal and in vitro research. However, common fenugreek products might not contain sufficient concentrations of these constituents for clinical effects. A clinical study in patients with coronary artery disease or diabetes shows that taking fenugreek seed powder 2.5 grams twice daily for 3 months does not affect platelet aggregation, fibrinolytic activity, or fibrinogen levels .
Antidiabetes Drugs
Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Clinical research shows that fenugreek seed can reduce fasting blood glucose and 2-hour postprandial glucose levels in adults with type 2 diabetes.
Clopidogrel (Plavix)
Theoretically, fenugreek seed might alter the clinical effects of clopidogrel by inhibiting its conversion to the active form.
Animal research shows that fenugreek seed 200 mg/kg daily for 14 days increases the maximum serum concentration of clopidogrel by 21%. It is unclear how this affects the pharmacokinetics of the active metabolite of clopidogrel; however, this study found that concomitant use of fenugreek seed and clopidogrel prolonged bleeding time by an additional 11%.
Metoprolol (Toprol)
Theoretically, fenugreek seed might have additive hypotensive effects when used with metoprolol.
Animal research shows that fenugreek seed 300 mg/kg daily for 2 weeks decreases systolic and diastolic blood pressure by 9% and 11%, respectively, when administered alone, and by 15% and 22%, respectively, when given with metoprolol 10 mg/kg.
Phenytoin (Dilantin)
Theoretically, fenugreek might decrease plasma levels of phenytoin.
Animal research shows that taking fenugreek seeds for 1 week decreases maximum concentrations and the area under the curve of a single dose of phenytoin by 44% and 72%, respectively. This seems to be related to increased clearance. So far, this interaction has not been reported in humans.
Sildenafil (Viagra)
Theoretically, concurrent use of sildenafil and fenugreek might reduce levels and therapeutic effects of sildenafil.
Animal research shows that taking fenugreek seeds for 1 week reduces maximum concentrations and the area under the curve of a single dose of sildenafil by 27% and 48%, respectively. So far, this interaction has not been reported in humans.
Theophylline
Theoretically, fenugreek may reduce the levels and clinical effects of theophylline.
Animal research shows that fenugreek 50 grams daily for 7 days reduces the maximum serum concentration (Cmax) of theophylline by 28% and the area under the plasma drug concentration-time curve (AUC) by 22%.
Warfarin (Coumadin)
Theoretically, fenugreek might have additive effects with warfarin and increase the international normalized ratio (INR).
Some fenugreek constituents have antiplatelet effects, although these might not be present in concentrations that are clinically significant. In one case report, a patient taking warfarin experienced an increased INR when starting to take fenugreek in combination with boldo.
Antihypertensive Drugs
Fenugreek may also have an additive effect on blood pressure-lowering medications. Studies on animals have shown that fenugreek seed can decrease both systolic and diastolic blood pressure by up to 22% when combined with metoprolol. Therefore, it is essential to monitor your blood pressure regularly if you are taking fenugreek and metoprolol together or any other antihypertensive drugs.
Mullein
Anticoagulant/Antiplatelet Drugs
Lab tests on extracts from different parts of common and dense-flowered mullein plants show that they do have some blood-thinning effects, as they increase the time it takes for blood to clot. This is likely due to at least one of the known constituents of muellein, triterpenoid saponins. However, the effects appear to be mild and results have been inconsistent. Extracts from different plant parts have been show to have varying anticoagulant strengths, with water-based ones being more potent than alcohol-based extracts.
Horseradish
Thyroid Hormone
Theoretically, horseradish might interfere with the effects of thyroid hormone.
Horseradish and other members of the cabbage and mustard family are associated with depressed thyroid function.
Brand information
Manufacturer and brand details for LAS-JB, from the product label.
Pure Herbs
See all Pure Herbs products- Name
- Pure Herbs, Ltd.
- City
- Sterling Heights
- State
- MI
- Phone Number
- (800) 860-4372
- Web Address
- www.pureherbs.com
LAS-JB by Pure Herbs: Common Questions
Does LAS-JB by Pure Herbs interact with any medications?
How can one product interact with so many drugs?
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Does fenugreek work for diabetes?
What are the side effects of fennel?
What is marshmallow used for?
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The Full Monographs Behind LAS-JB’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Fenugreek
Interacts with 389 drugsFenugreek is a common kitchen spice that is also taken as a supplement, mainly for blood sugar, cholesterol, and to support breast milk production. Some early research is encouraging for blo...
Read the full Fenugreek monograph → Herb & supplement monographFennel
Interacts with 742 drugsFennel is a Mediterranean herb widely used as a food and spice, and traditionally taken for digestive complaints, colic, and menstrual cramps. Some small studies suggest possible benefit for...
Read the full Fennel monograph → Herb & supplement monographHorseradish
Interacts with 16 drugsHorseradish is a pungent root used as a food and folk remedy, most often for sinus congestion and urinary tract complaints. Human evidence is limited, and while culinary amounts are generall...
Read the full Horseradish monograph → Herb & supplement monographMullein
Interacts with 122 drugsMullein is a traditional herbal remedy most often used as a tea or syrup to soothe coughs, sore throats, and respiratory irritation. High-quality human studies are lacking, so its benefits a...
Read the full Mullein monograph → Herb & supplement monographMarshmallow
Interacts with 2,040 drugsMarshmallow root is a traditional herb rich in soothing, gel-like fibers called mucilage, which is why it has long been used for coughs, sore throats, and stomach irritation. Evidence for th...
Read the full Marshmallow monograph →Sources & How We Checked
LAS-JB'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 60 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.
Fenugreek 30 references
- Madar Z, Thorne R. Dietary fiber. Prog Food Nutr Sci 1987;11:153-74.
- Sharma RD, Raghuram TC, Rao NS. Effect of fenugreek seeds on blood glucose and serum lipids in type I diabetes. Eur J Clin Nutr 1990;44:301-6.
- Patil SP, Niphadkar PV, Bapat MM. Allergy to fenugreek (Trigonella foenum graecum). Ann Allergy Asthma Immunol 1997;78:297-300. PubMed
- Lambert J, Cormier J. Potential interaction between warfarin and boldo-fenugreek. Pharmacotherapy 2001;21:509-12. PubMed
- Bordia A, Verma SK, Srivastava KC. Effect of ginger (Zingiber officinale Rosc.) and fenugreek (Trigonella foenumgraecum L.) on blood lipids, blood sugar and platelet aggregation in patients with coronary artery disease. Prostaglandins Leukot Essent Fatty PubMed
- Yalcin SS, Tekinalp G, Ozalp I. Peculiar odor of traditional food and maple syrup urine disease. Pediatr Int 1999;41:108-9. PubMed
- Sewell AC, Mosandl A, Bohles H. False diagnosis of maple syrup urine disease owing to ingestion of herbal tea. N Engl J Med 1999;341:769.. PubMed
- Abdo MS, al-Kafawi AA. Experimental studies on the effect of Trigonella foenum-graecum (abstract). Planta Med 1969;17:14-8.
- Gupta A, Gupta R, Lal B. Effect of Trigonella foenum-graecum (fenugreek) seeds on glycaemic control and insulin resistance in type 2 diabetes mellitus: a double blind placebo controlled study. J Assoc Physicians India 2001;49:1057-61.
- Gabay MP. Galactogogues: medications that induce lactation. J Hum Lact 2002;18:274-9. PubMed
- Chevassus H, Gaillard JB, Farret A, et al. A fenugreek seed extract selectively reduces spontaneous fat intake in overweight subjects. Eur J Clin Pharmacol 2010;66(5):449-55. PubMed
- Turkyilmaz C, Onal E, Hirfanoglu IM, et al. The effect of galactagogue herbal tea on breast milk production and short-term catch-up of birth weight in the first week of life. J Altern Complement Med 2011;17(2):139-42. PubMed
- Swafford S, Berens P. Effect of fenugreek on breast milk volume. Abstract presented at: 5th International Meeting of the Academy of Breastfeeding Medicine; September 11-13,2000, Tucson, Arizona.
- Abdel-Barry, J. A., Abdel-Hassan, I. A., Jawad, A. M., and al Hakiem, M. H. Hypoglycaemic effect of aqueous extract of the leaves of Trigonella foenum-graecum in healthy volunteers. East Mediterr.Health J 2000;6(1):83-88. DOI
- Parvizpur, A., Ahmadiani, A., and Kamalinejad, M. Probable role of spinal purinoceptors in the analgesic effect of Trigonella foenum (TFG) leaves extract. J Ethnopharmacol 3-8-2006;104(1-2):108-112. PubMed
- Mora, A., Herrrera, A., Lopez, C., Dahbi, G., Mamani, R., Pita, J. M., Alonso, M. P., Llovo, J., Bernardez, M. I., Blanco, J. E., Blanco, M., and Blanco, J. Characteristics of the Shiga-toxin-producing enteroaggregative Escherichia coli O104:H4 German ou
- Blanco, J. [Stx2a-producing enteroaggregative Escherichia coli O104:H4-ST678. Microbiological diagnostic already, for this and other STEC/VTEC serotypes!]. Enferm.Infecc.Microbiol.Clin. 2012;30(2):84-89.
- Beutin, L. and Martin, A. Outbreak of Shiga toxin-producing Escherichia coli (STEC) O104:H4 infection in Germany causes a paradigm shift with regard to human pathogenicity of STEC strains. J Food Prot. 2012;75(2):408-418. PubMed
- King LA, Nogareda F, Weill FX, Mariani-Kurkdjian P, Loukiadis E, Gault G, Jourdan-DaSilva N, Bingen E, Macé M, Thevenot D, Ong N, Castor C, Noël H, Van Cauteren D, Charron M, Vaillant V, Aldabe B, Goulet V, Delmas G, Couturier E, Le Strat Y, Combe C, Delm
- Reeder C, Legrand A, O'Connor-Von SK. The Effect of Fenugreek on Milk Production and Prolactin Levels in Mothers of Preterm Infants. Clinical Lactation 2013;4(4):159-165. DOI
- Al-Jenoobi FI, Ahad A, Mahrous GM, Al-Mohizea AM, AlKharfy KM, Al-Suwayeh SA. Effects of fenugreek, garden cress, and black seed on theophylline pharmacokinetics in beagle dogs. Pharm Biol 2015;53(2):296-300. PubMed
- Rao A, Steels E, Inder WJ, Abraham S, Vitetta L. Testofen, a specialised Trigonella foenum-graecum seed extract reduces age-related symptoms of androgen decrease, increases testosterone levels and improves sexual function in healthy aging males in a doubl
- Steels E, Rao A, Vitetta L. Physiological aspects of male libido enhanced by standardized Trigonella foenum-graecum extract and mineral formulation. Phytother Res. 2011 Sep;25(9):1294-300.
- Gong J, Fang K, Dong H, Wang D, Hu M, Lu F. Effect of fenugreek on hyperglycaemia and hyperlipidemia in diabetes and prediabetes: A meta-analysis. J Ethnopharmacol. 2016 Dec 24;194:260-268. PubMed
- Ouzir M, El Bairi K, Amzazi S. Toxicological properties of fenugreek (Trigonella foenum graecum). Food Chem Toxicol. 2016 Oct;96:145-54. PubMed
- Khodamoradi K, Khosropanah MH, Ayati Z, et al. The Effects of Fenugreek on Cardiometabolic Risk Factors in Adults: A Systematic Review and Meta-analysis. Complement Ther Med. 2020;52:102416. PubMed
- Alkharfy K, Jan B, Alotaibi K, et al. Clopidogrel-herb Interactions: A Pharmacokinetic and Pharmacodynamic Assessment in a Rat Model. Curr Drug Metab 2021;22(12):969-977. PubMed
- Bin Jardan YA, Ahad A, Raish M, Alam MA, Al-Mohizea AM, Al-Jenoobi FI. Effects of garden cress, fenugreek and black seed on the pharmacodynamics of metoprolol: an herb-drug interaction study in rats with hypertension. Pharm Biol 2021;59(1):1088-1097. PubMed
- Al-Mohizea AM, Ahad A, El-Maghraby GM, et al. Effects of Nigella sativa, Lepidium sativum and Trigonella foenum-graecum on sildenafil disposition in beagle dogs. Eur J Drug Metab Pharmacokinet. 2015;40(2):219-24. PubMed
- Alkharfy KM, Al-Jenoobi FI, Al-Mohizea AM, et al. Effects of Lepidium sativum, Nigella sativa and Trigonella foenum-graceum on phenytoin pharmacokinetics in beagle dogs. Phytother Res. 2013;27(12):1800-4.
Fennel 17 references
- Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Zhu M, Wong PY, Li RC. Effect of oral administration of fennel (Foeniculum vulgare) on ciprofloxacin absorption and disposition in the rat. J Pharm Pharmacol 1999;51:1391-6.
- Gral N, Beani JC, Bonnot D, et al. [Plasma levels of psoralens after celery ingestion]. Ann Dermatol Venereol 1993;120:599-603.
- Burkhard PR, Burkhardt K, Haenggeli CA, Landis T. Plant-induced seizures: reappearance of an old problem. J Neurol 1999;246:667-70. PubMed
- Rosti L, Nardini A, Bettinelli ME, Rosti D. Toxic effects of a herbal tea mixture in two newborns. Acta Paediatrica 1994;83:683. PubMed
- Cuzzolin L, Zaffani S, and Benoni G. Safety implications regarding use of phytomedicines. Eur.J Clin Pharmacol. 2006;62:37-42. PubMed
- Tognolini, M., Ballabeni, V., Bertoni, S., Bruni, R., Impicciatore, M., and Barocelli, E. Protective effect of Foeniculum vulgare essential oil and anethole in an experimental model of thrombosis. Pharmacol.Res 2007;56(3):254-260. PubMed
- Subehan, Usia, T., Iwata, H., Kadota, S., and Tezuka, Y. Mechanism-based inhibition of CYP3A4 and CYP2D6 by Indonesian medicinal plants. J Ethnopharmacol. 5-24-2006;105(3):449-455. PubMed
- Tognolini, M., Barocelli, E., Ballabeni, V., Bruni, R., Bianchi, A., Chiavarini, M., and Impicciatore, M. Comparative screening of plant essential oils: phenylpropanoid moiety as basic core for antiplatelet activity. Life Sci. 2-23-2006;78(13):1419-1432. PubMed
- Subehan, Zaidi, S. F., Kadota, S., and Tezuka, Y. Inhibition on human liver cytochrome P450 3A4 by constituents of fennel (Foeniculum vulgare): identification and characterization of a mechanism-based inactivator. J Agric.Food Chem. 12-12-2007;55(25):101 PubMed
- LEVY, S. B. Bronchial asthma due to ingestion of fennel and fennel seed. Ann.Allergy 1948;6(4):415.
- Ottolenghi, A., De Chiara, A., Arrigoni, S., Terracciano, L., and De Amici, M. [Diagnosis of food allergy caused by fruit and vegetables in children with atopic dermatitis]. Pediatr Med Chir 1995;17(6):525-530.
- Trabace L, Tucci P, Ciuffreda L, et al. "Natural" relief of pregnancy-related symptoms and neonatal outcomes: above all do no harm. J Ethnopharmacol. 2015;174:396-402. PubMed
- Denaxa D, Arkwright PD. Fennel as a cause of immediate hypersensitivity to toothpaste. Ann Allergy Asthma Immunol. 2020;125(1):99-100. PubMed
- Lee HW, Ang L, Lee MS, Alimoradi Z, Kim E. Fennel for reducing pain in primary dysmenorrhea: a systematic review and meta-analysis of randomized controlled trials. Nutrients 2020;12(11):3438. PubMed
- Mathew T, John SK, Javali M, Vasireddy M, Nadig R, Sarma GRK. Substance use related cluster headache: A case series. Headache 2022;62(7):908-910. PubMed
Horseradish 6 references
- Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
- Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
- The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
- 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
- Panter, K. E. and James, L. F. Natural plant toxicants in milk: a review. J Anim Sci 1990;68(3):892-904. PubMed
- Lehmann CU, Puckett AL, Betz BO. 56-year-old man - increased heart rate - weakness - intense sweating - horseradish consumption - Dx?. J Fam Pract 2022;71(7):317-321. PubMed
Mullein 2 references
- Castro AI, Carmona JB, Gonzales FG, Nestar OB. Occupational airborne dermatitis from gordolobo (Verbascum densiflorum). Contact Dermatitis 2006;55(5):301.
- Flores Echaiz C, Al Ali A, Cao AQ, Sasseville D. Simultaneous contact dermatitis caused by Asteraceae and Verbascum thapsus. Contact Dermatitis 2017;76(5):316-8.
Marshmallow 5 references
- Monographs on the medicinal uses of plant drugs. Exeter, UK: European Scientific Co-op Phytother, 1997.
- Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Hage-Sleiman R, Mroueh M, Daher CF. Pharmacological evaluation of aqueous extract of Althaea officinalis flower grown in Lebanon. Pharm Biol 2011;49(3):327-33.
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