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Dietary supplement

ImmuHerbs Ingredients & Drug Interactions

by Pure Encapsulations

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

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

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

The interaction bottom line Most serious interaction: Moderate

ImmuHerbs is a dietary supplement by Pure Encapsulations with 5 active ingredients. Its ingredients are commonly taken for immune support, cold and flu prevention, digestive and gut health.Based on those ingredients, 1,082 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Garlic (Allium sativum) powder, Maitake Mushroom (Grifola frondosa) extract, Arabinogalactan. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against ImmuHerbs by Pure Encapsulations

Ask about any prescription or over-the-counter medication and we check it for interactions with ImmuHerbs by Pure Encapsulations — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of ImmuHerbs by Pure Encapsulations

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

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 6, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 5 of its 5 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

ImmuHerbs contains 5 active ingredients: larch arabinogalactan (a fiber from larch tree wood), European elder (elderberry) extract, maitake mushroom (Grifola frondosa) extract, olive (Olea europaea) extract, and garlic (Allium sativum) powder. The product also contains vegetarian capsule material and ascorbyl palmitate (a form of vitamin C) as inactive ingredients.

Does it work?

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

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

Why this rating?
  • The label markets this product for: immune system support.
  • We looked for evidence on: Common cold, Influenza, Lower respiratory tract infections, Bronchitis, Exercise-induced respiratory infections, Upper respiratory infections — and 2 related terms.
  • The closest evidence on file: Olive is rated "Insufficient Reliable Evidence To Rate" for Exercise-induced respiratory infections (Natural Medicines).
  • Also on file: Olive is rated "Insufficient Reliable Evidence To Rate" for Influenza.
  • Also on file: Garlic is rated "Insufficient Reliable Evidence To Rate" for Bronchitis, Common cold, Influenza.

The evidence supporting these ingredients is limited. For arabinogalactan, elderberry, maitake mushroom, and olive, we hold insufficient reliable evidence to rate their effectiveness for the conditions they are marketed for—including common cold, hay fever, fatigue, and inflammation-related conditions.

Garlic is the exception: it is possibly effective for periodontitis (gum disease), diabetes, high blood pressure, fatty liver disease, and atherosclerosis. However, these ratings reflect garlic's potential as a single ingredient, not the combination in this product.

The evidence, ingredient by ingredient Larch Arabinogalactan Elderberry Maitake Mushroom Olive Garlic

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

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

Why this rating?
  • We hold adverse-effect (side-effect) data for 5 of the 5 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 5 of 5.
  • General safety write-ups exist for 5 of 5.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

The prepared ingredients in this product are generally well tolerated when taken by mouth. Elderberry extracts made from ripe fruit are well tolerated; raw or unripe berries and plant parts contain toxins that are eliminated by cooking.

Maitake mushroom and olive extract are generally well tolerated; garlic is generally well tolerated as food, though the supplement form is less studied. Common side effects are mild: garlic may cause abdominal pain, flatulence, body odor, and nausea; maitake may cause gastrointestinal discomfort or diarrhea; olive may cause headache or stomach discomfort.

Allergic reactions (rash, pruritus) have been reported with maitake and garlic in a small number of trial participants. For pregnancy and lactation, the safety data are mixed: garlic is likely safe during pregnancy and lactation, but elderberry and maitake mushroom supplements should be avoided in pregnancy and lactation due to insufficient safety data.

Pregnancy and lactation safety data for arabinogalactan and olive are not on file. If you are pregnant or breastfeeding, discuss this product with your doctor or pharmacist.

Side effects, ingredient by ingredient Larch Arabinogalactan Elderberry Maitake Mushroom Olive Garlic

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

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

Why this rating?
  • 4 of the 5 matched ingredients can interact with medications — Garlic, Elderberry, Maitake Mushroom, Larch Arabinogalactan.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; diabetes medications.
  • For scale: 1,083 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.

Check with your doctor or pharmacist before taking this product if you use anticoagulant or antiplatelet drugs (blood thinners like warfarin, apixaban, rivaroxaban, or clopidogrel), immunosuppressants (like cyclosporine, tacrolimus, or mycophenolate), antihypertensive drugs (blood pressure medications), antidiabetes drugs (diabetes medications), drugs metabolized by liver enzymes (CYP3A4 or CYP2E1 substrates—a large category that includes many statins, antihistamines, and others), protease inhibitors (HIV medications), or warfarin specifically. If you take any of these, run your medications through the checker on this page.

Check your own medication Run your meds through the checker above

The bottom line

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

ImmuHerbs is a five-ingredient herbal blend with limited evidence for its effectiveness. The main concern is interaction risk—particularly if you take blood thinners, immunosuppressants, blood pressure or diabetes medications, or HIV protease inhibitors.

Before you start this product, review your medications with your doctor or pharmacist, especially if you take any prescription drugs.

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 Jan 7, 2019.

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

At a glance

General information

Key facts about ImmuHerbs, straight from the product label.

Brand Pure Encapsulations
Barcode (UPC) 766298004334
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Jan 7, 2019
DSLD ID 185008
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for ImmuHerbs by Pure Encapsulations, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
3 Capsule(s)
Maximum serving Sizes:
3 Capsule(s)
Servings per container
20
UPC/BARCODE
766298004334
IngredientAmount% DV
Arabinogalactan500 mg--
European Elder (Elderberry) (Sambucus nigra) extract500 mg--
Maitake Mushroom (Grifola frondosa) extract250 mg--
Olive (Olea europaea) extract500 mg--
Garlic (Allium sativum) powder250 mg--

Other ingredients: Vegetarian Capsule, Ascorbyl Palmitate

Tap any ingredient to jump to its full detail below.

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

Store in a cool, dry place.

Suggested/Recommended/Usage/Directions

Recommendations: As a dietary supplement, take 3 capsules daily, between meals, or as directed by a health professional.

Precautions

Warning: If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.

Keep out of the reach of children.

Use only if safety seal is intact.

General Statements

Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity.

Scan to learn about our hypoallergenic supplements

Herbal immune support combination

Formulation

Certified Gluten-Free by the Gluten-Free Certification Organization, www.gluten.org

Gluten-free, Non-GMO & Hypoallergenic

Gluten-free, Non-GMO & Hypoallergenic

FDA Statement of Identity

Dietary Supplement

Seals/Symbols

GF

FDA Disclaimer Statement

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

General

v7 code: IH6

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

See for yourself

ImmuHerbs by Pure Encapsulations label

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

ImmuHerbs label

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

View the full label (PDF)
What’s inside

The Ingredients in ImmuHerbs by Pure Encapsulations

These are the 5 active ingredients this product is made of. Select any to open its full monograph.

Serving size3 Capsule(s) Dosage formCapsule Servings per container20 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.

Arabinogalactan

Interacts with
121 drugs
500 mg per serving

Larch arabinogalactan is a soluble fiber from larch trees that is mainly used as a prebiotic and for immune support. Early research is interesting but...

Arabinogalactan monograph & interactions

European Elder (Elderberry) (Sambucus nigra) extract

Interacts with
121 drugs
500 mg per serving

Elderberry is a popular herbal supplement, mainly taken to help with colds and flu. Some small studies suggest it may modestly shorten cold or flu sym...

European Elder (Elderberry) (Sambucus nigra) extract monograph & interactions

Maitake Mushroom (Grifola frondosa) extract

Interacts with
260 drugs
250 mg per serving

Maitake is an edible mushroom long used as food and in traditional Japanese medicine, and it is being studied for possible immune, blood sugar, and bl...

Maitake Mushroom (Grifola frondosa) extract monograph & interactions

Olive (Olea europaea) extract

No known
interactions
500 mg per serving Form: Oleuropein

Olive comes from the same tree that gives us olives and olive oil, and its leaf and fruit contain antioxidant compounds like oleuropein and hydroxytyr...

Olive (Olea europaea) extract monograph & interactions

Garlic (Allium sativum) powder

Interacts with
989 drugs
250 mg per serving Form: Allicin

Garlic is a common food and supplement that may modestly help with blood pressure and cholesterol, though the evidence is mixed and effects are usuall...

Garlic (Allium sativum) powder monograph & interactions

Other (inactive) ingredients: Vegetarian Capsule, Ascorbyl Palmitate. These complete the product’s ingredient list but are not active constituents.

Interaction report

ImmuHerbs by Pure Encapsulations Drug Interactions

Want to check YOUR meds against ImmuHerbs?

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

 Go to the checker
1,082Drugs
1,082 Moderate

Ingredients driving the most interactions

Garlic (Allium sativum) powder 989
Maitake Mushroom (Grifola frondosa) extract 260
Arabinogalactan 121
European Elder (Elderberry) (Sambucus nigra) extract 121

Individual Drug Interactions

The ingredients in ImmuHerbs interact with 1,082 drugs. Click any drug to see the details.

4 of the 5 ingredients in ImmuHerbs interact with drugs. Each result below shows which ingredient is responsible. Garlic (Allium sativum) powder Maitake Mushroom (Grifola frondosa) extract Arabinogalactan European Elder (Elderberry) (Sambucus nigra) extract

Each ingredient & the kinds of drugs it affects

For each ingredient in ImmuHerbs 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.

Garlic (Allium sativum) powder12 drug types · 989 drugs

Anticoagulant/Antiplatelet Drugs

Garlic may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Raw garlic and a variety of garlic extracts have antiplatelet activity and can increase prothrombin time.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, taking garlic with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical research suggests that garlic and garlic extract lower blood glucose levels in healthy and diabetic individuals.

Likelihood Possible Evidence B
Antihypertensive Drugs

Theoretically, taking garlic with antihypertensive drugs might increase the risk of hypotension.
In human research, both garlic and garlic extracts have blood pressure-lowering effects.

Likelihood Possible Evidence D
Atazanavir (Reyataz)

Theoretically, garlic might decrease levels and effects of atazanavir.
In a case report, a patient consuming six stir-fried garlic cloves three times weekly developed suboptimal atazanavir levels and increases in HIV viral load. While the exact cause of this interaction is unclear, there is speculation that garlic might decrease the intestinal absorption of atazanavir or increase its metabolism by inducing cytochrome P450 3A4 (CYP3A4). Until more is known, advise patients not to consume large amounts of garlic while taking atazanavir.

Likelihood Possible Evidence D
Cytochrome P450 2E1 (Cyp2E1) Substrates

Garlic might increase levels of drugs metabolized by CYP2E1.
Clinical research suggests garlic oil can inhibit the activity of CYP2E1 by 39%. Use garlic oil cautiously in patients taking drugs metabolized by these enzymes.

Likelihood Probable Evidence B
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, garlic products containing allicin might induce intestinal CYP3A4 and inhibit hepatic CYP3A4. This may increase or decrease levels of drugs metabolized by CYP3A4.
Some human research suggests that garlic may induce INTESTINAL CYP3A4, reducing levels of drugs metabolized by this enzyme. This is primarily based on a study showing that taking a specific allicin-containing garlic product (GarliPure Maximum Allicin Formula, Natrol Inc.) twice daily for 3 days reduces saquinavir levels by approximately 50%. It is speculated that the allicin constituent induced CYP3A4 in the gut mucosa. Another study shows that giving docetaxel intravenously, bypassing the CYP3A4 enzymes in the gut mucosa, along with the same specific garlic product for 12 consecutive days, does not affect docetaxel levels. Conversely, there is concern that garlic may inhibit HEPATIC CYP3A4. In a single case report, increased tacrolimus levels and liver injury occurred in a liver transplant patient after taking a specific garlic supplement (Garlicin Cardio, Nature's Way) at up to three times the manufacturer recommended dose for 7 days. Several other studies have evaluated the impact of other garlic formulations on CYP3A4 substrates and have found no effect. Most of the products in these studies provided little or no allicin.

Likelihood Possible Evidence B
Isoniazid

Theoretically, garlic might decrease levels of isoniazid.
Animal research suggests that an aqueous extract of garlic reduces isoniazid levels by about 65%. Garlic reduced the maximum concentration (Cmax) and area under the curve (AUC), but not the half-life, of isoniazid. This suggests that garlic extract might inhibit isoniazid absorption across the intestinal mucosa; however, the exact mechanism of this potential interaction is not known.

Likelihood Possible Evidence D
Protease Inhibitors (Pis)

Theoretically, garlic products containing allicin might decrease levels of PIs.
Protease inhibitors are metabolized by cytochrome P450 3A4 (CYP3A4) isoenzymes. There is concern that garlic products containing allicin might induce intestinal CYP3A4, reducing plasma levels of protease inhibitors. This is primarily based on a study showing that taking a specific garlic product (GarliPure Maximum Allicin Formula, Natrol Inc.) twice daily for 3 days reduces levels of saquinavir, a PI, by approximately 50%. It is speculated that the allicin constituent induce CYP3A4 in the gut mucosa. Several studies have evaluated the impact of other garlic formulations on CYP3A4 substrates and have found no effect. Most of the products in these studies provided little or no allicin.

Likelihood Possible Evidence B
Saquinavir (Fortovase, Invirase)

Theoretically, garlic containing allicin might decrease levels of saquinavir.
Saquinavir is a substrate of cytochrome P450 3A4 (CYP3A4) isoenzymes. There is concern that garlic products containing allicin might induce intestinal CYP3A4 and cause subtherapeutic levels of saquinavir. This is primarily based on a pharmacokinetic study showing that taking a specific garlic product (GarliPure Maximum Allicin Formula, Natrol Inc.) twice daily for 3 days reduces saquinavir levels by approximately 50%. It is speculated that the allicin constituent induces CYP3A4 in the gut mucosa. Several pharmacokinetic studies have evaluated the impact of other garlic formulations on CYP3A4 substrates and have found no effect. Most of the products in these studies provided little or no allicin. Until more is known about this potential interaction, use garlic containing allicin cautiously in patients taking saquinavir.

Likelihood Possible Evidence B
Sofosbuvir (Sovaldi)

Theoretically, taking garlic with sofosbuvir might decrease its effectiveness.
Animal research in rats shows that giving aged garlic extract 120 mg/kg orally daily for 14 days decreases the area under the concentration time curve (AUC) after a single sofosbuvir dose of 40 mg/kg by 36%, increases the clearance by 63%, and decreases the plasma concentrations at 1 and 8 hours by 35% and 58%, respectively. This interaction is hypothesized to be due to induction of intestinal P-glycoprotein expression by garlic.

Likelihood Possible Evidence D
Tacrolimus (Prograf)

Theoretically, garlic might increase levels of tacrolimus.
In one case report, a liver transplant patient taking tacrolimus experienced increased tacrolimus levels and liver injury after taking a specific garlic supplement (Garlicin Cardio, Nature's Way) at up to three times the manufacturer recommended dose for 7 days. It is speculated that garlic inhibited hepatic cytochrome P450 3A4 (CYP3A4), which increased plasma levels of tacrolimus.

Likelihood Possible Evidence B
Warfarin (Coumadin)

Theoretically, garlic might increase the risk of bleeding with warfarin.
Raw garlic and a variety of garlic extracts have antiplatelet activity and can increase prothrombin time. In addition, there is a report of two patients who experienced an increase in a previously stabilized international normalized ratio (INR) with concomitant garlic and warfarin use. However, this report has been subsequently debated due to limited clinical information. Other clinical studies have not identified an effect of garlic on INR, warfarin pharmacokinetics, or bleeding risk. More evidence is needed to determine the safety of using garlic with warfarin.

Likelihood Possible Evidence D
Garlic (Allium sativum) powder full monograph & interactions

Maitake Mushroom (Grifola frondosa) extract3 drug types · 260 drugs

Antidiabetes Drugs

Theoretically, combining maitake mushroom with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical research shows that taking maitake mushroom polysaccharide (MMP) can lower blood glucose levels in patients with types 2 diabetes.

Likelihood Possible Evidence B
Antihypertensive Drugs

Theoretically, combining maitake mushroom with antihypertensive drugs might increase the risk of hypotension.
Animal research shows that maitake mushroom can lower blood pressure.

Likelihood Possible Evidence D
Warfarin (Coumadin)

There is limited evidence that maitake mushroom may increase the anticoagulant effects of warfarin.
In a case report, a patient previously stabilized on warfarin developed an elevated international normalized ratio (INR) of 5.1 after taking maitake mushroom (Grifron-Pro Maitake D-Fraction) 1 drop/kg daily in three divided doses for one week. The elevated INR resolved after holding warfarin for two days, then reducing the dose by 11%. It is thought that the beta-glucan constituent of maitake mushroom might cause warfarin dissociation from proteins, resulting in increased free warfarin levels and increased warfarin effects.

Likelihood Possible Evidence D
Maitake Mushroom (Grifola frondosa) extract full monograph & interactions

Arabinogalactan1 drug type · 121 drugs

Immunosuppressants

Theoretically, larch arabinogalactan might interfere with immunosuppression therapy due to immunostimulant effects. Immunosuppressant drugs include azathioprine (Imuran), basiliximab (Simulect), cyclosporine (Neoral, Sandimmune), daclizumab (Zenapax), muromonab-CD3 (OKT3, Orthoclone OKT3), mycophenolate (CellCept), tacrolimus (FK506, Prograf), sirolimus (Rapamune), prednisone (Deltasone, Orasone), corticosteroids (glucocorticoids), and other drugs.

Likelihood Possible Evidence D
Arabinogalactan full monograph & interactions

European Elder (Elderberry) (Sambucus nigra) extract2 drug types · 121 drugs

Immunosuppressants

Theoretically, elderberry might interfere with immunosuppressant therapy due to its immunostimulant activity.
Elderberry has immunostimulant activity, increasing the production of cytokines, including interleukin and tumor necrosis factor.

Likelihood Possible Evidence B
Pazopanib (Votrient)

Theoretically, elderberry might interact with pazopanib, potentially increasing the risk of adverse effects.
In one case, a 65-year-old patient taking pazopanib for 4 weeks for soft-tissue sarcoma developed severe nausea, loose stools, and elevated alanine transaminase and aspartate transaminase levels and was diagnosed with grade 3 liver injury. The patient reported taking elderberry supplements for 2 years, dose unspecified, and was also taking a multivitamin and a calcium supplement. The patient's symptoms and liver enzyme levels improved upon discontinuation of pazopanib and all supplements. Pazopanib treatment was re-initiated, at a lower dose, with no further evidence of liver injury. It was unclear in this case report if the elderberry supplements were derived from the berry, the flower, or the combination.

Likelihood Possible Evidence D
European Elder (Elderberry) (Sambucus nigra) extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for ImmuHerbs, from the product label.

Pure Encapsulations

See all Pure Encapsulations products
Name
Pure Encapsulations
Street Address
490 Boston Post Road
City
Sudbury
State
MA
Phone Number
1-800-753-2277
Web Address
www.PureEncapsulations.com
Pharmacist Counseling Corner

ImmuHerbs by Pure Encapsulations: Common Questions

Does ImmuHerbs by Pure Encapsulations interact with any medications?
Yes. Based on its ingredients, ImmuHerbs has a known interaction with 1,082 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
ImmuHerbs contains 5 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take ImmuHerbs if I'm pregnant or breastfeeding?
Garlic is likely safe during pregnancy and lactation, but elderberry and maitake mushroom concentrates should be avoided—there isn't enough safety data to know they are safe. We don't have safety data on file for arabinogalactan and olive in pregnancy or lactation. Talk with your doctor or pharmacist before taking this product if you're pregnant or nursing.
Will ImmuHerbs help me avoid a cold or the flu?
The evidence for these ingredients on cold and flu prevention is insufficient—we don't have solid data showing they work for these purposes. Garlic is possibly effective for diabetes, high blood pressure, and gum disease, but not for respiratory infections.
What side effects might I experience?
Most common are mild: garlic may cause abdominal pain, flatulence, body odor, or nausea; maitake or olive may cause stomach discomfort, diarrhea, or headache. Allergic reactions like rash have been reported with some ingredients in a small number of people. If you notice persistent or severe side effects, stop and tell your doctor or pharmacist.
Is garlic in this product safe to take with blood pressure medication?
Garlic can lower blood pressure, so taking it with blood pressure medications theoretically increases the risk of blood pressure dropping too low. If you take antihypertensive drugs, check with your doctor or pharmacist before starting ImmuHerbs.
Can I take this with blood thinners like warfarin?
Garlic and maitake mushroom both have effects on blood clotting. There are case reports of patients on warfarin experiencing increased bleeding risk or elevated INR (a measure of blood thinning) when adding these ingredients. Do not combine this product with warfarin or other blood thinners without checking with your doctor or pharmacist first.
I take a diabetes medication—is this product safe for me?
Both garlic and maitake mushroom may lower blood sugar, so combining them with diabetes medications theoretically increases the risk of low blood sugar (hypoglycemia). Talk with your doctor or pharmacist before starting this product if you take diabetes medications, and monitor your blood sugar closely.

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

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

ImmuHerbs label
Go deeper

The Full Monographs Behind ImmuHerbs’s Ingredients

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

Herb & supplement monograph

Larch Arabinogalactan

Interacts with 121 drugs

Larch arabinogalactan is a soluble fiber from larch trees that is mainly used as a prebiotic and for immune support. Early research is interesting but limited, and most claims are not yet fi...

Read the full Larch Arabinogalactan monograph → Herb & supplement monograph

Elderberry

Interacts with 121 drugs

Elderberry is a popular herbal supplement, mainly taken to help with colds and flu. Some small studies suggest it may modestly shorten cold or flu symptoms, but the evidence is limited and n...

Read the full Elderberry monograph → Herb & supplement monograph

Maitake Mushroom

Interacts with 260 drugs

Maitake is an edible mushroom long used as food and in traditional Japanese medicine, and it is being studied for possible immune, blood sugar, and blood pressure effects. The human evidence...

Read the full Maitake Mushroom monograph → Herb & supplement monograph

Olive

Olive comes from the same tree that gives us olives and olive oil, and its leaf and fruit contain antioxidant compounds like oleuropein and hydroxytyrosol. Olive oil as part of a Mediterrane...

Read the full Olive monograph → Herb & supplement monograph

Garlic

Interacts with 989 drugs

Garlic is a common food and supplement that may modestly help with blood pressure and cholesterol, though the evidence is mixed and effects are usually small. It is generally safe in food am...

Read the full Garlic monograph →
Sources

Sources & How We Checked

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

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

The 178 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.

Larch Arabinogalactan 8 references
  1. D'Adamo P. Larch arabinogalactan. J Naturopath Med 1996;6:33-7.
  2. Kelly GS. Larch arabinogalactan: Clinical relevance of a novel immune-enhancing polysaccharide. Alt Med Rev 1999;4:96-103.
  3. Marett R, Slavin JL. No long-term benefits of supplementation with arabinogalactan on serum lipids and glucose. J Am Diet Assoc 2004;104:636-9.
  4. Robinson RR, Feirtag J, Slavin JL. Effects of dietary arabinogalactan on gastrointestinal and blood parameters in healthy human subjects. J Am Coll Nutr 2001;20:279-85. PubMed
  5. Udani JK, Singh BB, Barrett ML, Singh VJ. Proprietary arabinogalactan extract increases antibody response to the pneumonia vaccine: a randomized, double-blind, placebo-controlled, pilot study in healthy volunteers. Nutr J 2010;9:32. PubMed
  6. Grube B, Stier H, Riede L, Gruenwald J. Tolerability of a proprietary larch arabinogalactan extract: a randomized, double-blind, placebo-controlled clinical trial in healthy subjects. Food Nutr Sci 2012;3:1533-8. DOI
  7. Dion C, Chappuis E, Ripoll C. Does larch arabinogalactan enhance immune function? A review of mechanistic and clinical trials. Nutr Metab (Lond) 2016;13:28. PubMed
  8. Riede L, Grube B, Gruenwald J. Larch arabinogalactan effects on reducing incidence of upper respiratory tract infections. Curr Med Res Opin 2013;29(3):251-8.

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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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