Thymulus Ingredients & Drug Interactions
by Nature's Way
What is this page for?
First and foremost: checking Thymulus 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
Thymulus is a dietary supplement by Nature's Way with 3 active ingredients. Its ingredients are commonly taken for constipation, diarrhea, high cholesterol.Based on those ingredients, 2,125 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Dietary Fiber, Astragalus root extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Thymulus by Nature's Way
Ask about any prescription or over-the-counter medication and we check it for interactions with Thymulus by Nature's Way — 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 Thymulus by Nature's Way
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
Full disclosure
Thymulus has two active ingredients: astragalus root extract and thymus powder. Astragalus is used traditionally to support immune function, while thymus powder comes from thymus tissue.
The capsules also contain several inactive ingredients—cellulose, gelatin, magnesium stearate, titanium dioxide, and silica—which help form and fill the capsule but aren't the active part of the supplement.
Does it work?
Not established
The evidence for astragalus isn't established in our data. The product facts show insufficient reliable evidence to rate astragalus for conditions like hay fever, asthma, anemia, and angina.
We hold no effectiveness information on thymus powder.
How safe is it?
Well-documented data
Astragalus is generally well tolerated in the short term for healthy adults, but human safety data is limited. Some people in clinical trials reported dizziness, and intravenous forms have caused rash and itching—though we can't say for certain astragalus caused all of these.
The safety data advises against using astragalus during pregnancy or while breastfeeding because there isn't enough reliable information to know it's safe.
Meds to double-check
Moderate interaction found
Before taking Thymulus, check if you use immunosuppressants, antidiabetes drugs, lithium, or cyclophosphamide. These are the medication types with documented interactions with astragalus in this product.
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.
If you're on immunosuppressants, lithium, diabetes medications, or chemotherapy, talk with your pharmacist before starting this product. Anyone planning to become pregnant or breastfeeding should avoid it.
For others, the main caution is that human safety data is limited.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Apr 25, 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
General information
Key facts about Thymulus, straight from the product label.
| Brand | Nature's Way |
|---|---|
| Barcode (UPC) | 763948040063 |
| Net contents | 60 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Apr 25, 2019 |
| DSLD ID | 201484 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Dairy 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 Thymulus by Nature's Way, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Total Carbohydrates | 1 Gram(s) | 1% |
| Dietary Fiber | 1 Gram(s) | 2% |
| Astragalus root extract | 250 mg | -- |
| Thymus powder | 750 mg | -- |
Other ingredients: Cellulose, Gelatin, Magnesium Stearate, Titanium Dioxide, Silica
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.
Brand IP Statement(s)
Thymulus Immune Formula
2019 Nature's Way Brands, LLC (previously branded Enzymatic therapy, LLC)
General Statements
Supports immune health
Since 1969
Immune Health
Formula
Thymus powder Astragalus root extract
Thymus with Astragalus Extract
Precautions
Keep out of reach of children.
Safety sealed with printed inner seal. Do not use if either is broken or missing.
If pregnant, nursing or taking any medications, consult a healthcare professional before use.
Formulation
Gluten Free. No sugar, salt, yeast, wheat, soy, dairy products, artificial flavors or preservatives.
General
LE04006.D01 BLK400D
FDA Disclaimer Statement
These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Recommendation: Take 2 capsules daily.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Thymulus by Nature's Way 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 Thymulus by Nature's Way
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 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.
Dietary Fiber
Interacts with2,025 drugs
Black psyllium is a soluble-fiber supplement made from the seeds of a Plantago plant, used mostly to ease constipation and support digestive health. I...
Dietary Fiber monograph & interactionsAstragalus root extract
Interacts with208 drugs
Astragalus is a root used for centuries in traditional Chinese medicine, mainly to support the immune system and help the body cope with stress. While...
Astragalus root extract monograph & interactionsThymus powder
Other (inactive) ingredients: Cellulose, Gelatin, Magnesium Stearate, Titanium Dioxide, Silica. These complete the product’s ingredient list but are not active constituents.
Thymulus by Nature's Way Drug Interactions
HelloPharmacist Interaction Report
Thymulus by Nature's Way contains astragalus root extract, which has documented interactions with several medication types.
The most serious concern is with immunosuppressants (drugs that weaken your immune system on purpose, like those taken after organ transplant): astragalus may interfere with how well these drugs work, since it seems to stimulate immune function rather than suppress it.
Read the full breakdown — every affected drug type, severity by severity
You'll also want to check if you take lithium (a mood stabilizer for bipolar disorder). Astragalus may have mild diuretic effects that could increase lithium levels in your body, raising the risk of side effects.
If you're on antidiabetes drugs, astragalus might lower your blood sugar further, increasing the risk of low blood sugar (hypoglycemia). There's also a theoretical concern with cyclophosphamide (a chemotherapy drug), though the evidence is mixed.
We couldn't check the second ingredient, thymus powder, because we hold no interaction data for it. Run your exact medications through the search tool on this page to see if any are affected.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Thymulus?
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 Thymulus interact with 2,125 drugs. Click any drug to see the details.
2 of the 3 ingredients in Thymulus interact with drugs. Each result below shows which ingredient is responsible. Dietary Fiber Astragalus root extract
6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + 6-mercaptopurine interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + 6-mercaptopurine interactionAbrocitinibCibinqo
How Abrocitinib interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Abrocitinib interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Abrocitinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking astragalus with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Astragalus Root Extract + Acarbose interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Acarbose interactionAcetohexamideDymelor
How Acetohexamide interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking astragalus with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Astragalus Root Extract + Acetohexamide interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Acetohexamide interactionAdalimumabHumira
How Adalimumab interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Adalimumab interactionAdalimumab-adazHyrimoz
How Adalimumab-adaz interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Adalimumab-adaz interactionAdalimumab-adbmCyltezo
How Adalimumab-adbm interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Adalimumab-adbm interactionAdalimumab-afzbAbrilada
How Adalimumab-afzb interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Adalimumab-afzb interactionAdalimumab-attoAmjevita
How Adalimumab-atto interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Adalimumab-atto interactionAdalimumab-bwwdHadlima
How Adalimumab-bwwd interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Adalimumab-bwwd interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Adalimumab-bwwd interactionAdalimumab-fkjpHulio
How Adalimumab-fkjp interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Adalimumab-fkjp interactionAlbiglutideTanzeum
How Albiglutide interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking astragalus with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Astragalus Root Extract + Albiglutide interactionAlefaceptAmevive
How Alefacept interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Alefacept interactionAlemtuzumabCampath
How Alemtuzumab interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Alemtuzumab interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Alemtuzumab interactionAlogliptinNesina
How Alogliptin interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking astragalus with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Astragalus Root Extract + Alogliptin interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Alogliptin interactionAlogliptin, MetforminKazano
How Alogliptin, Metformin interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Alogliptin, Metformin interactionAstragalus Root ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking astragalus with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Astragalus Root Extract + Alogliptin, Metformin interactionAlogliptin, PioglitazoneOseni
How Alogliptin, Pioglitazone interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking astragalus with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Astragalus Root Extract + Alogliptin, Pioglitazone interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Alogliptin, Pioglitazone interactionAnifrolumab-fniaSaphnelo
How Anifrolumab-fnia interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Anifrolumab-fnia interactionAntidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) InhibitorGlyxambi
How Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking astragalus with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Astragalus Root Extract + Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interactionAntithymocyte GlobulinThymoglobulin
How Antithymocyte Globulin interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Antithymocyte Globulin interactionAtezolizumabTecentriq
How Atezolizumab interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Atezolizumab interactionAzamuneImmunoprin
How Azamune interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Azamune interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Azamune interactionAzathioprineAzamune, Imuran
How Azathioprine interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Azathioprine interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Azathioprine interactionBasiliximabSimulect
How Basiliximab interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Basiliximab interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Basiliximab interactionBeclometasone DipropionateBecotide
How Beclometasone Dipropionate interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Beclometasone Dipropionate interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Beclometasone Dipropionate interactionBeclomethasoneBeclovent, Vanceril
How Beclomethasone interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Beclomethasone interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Beclomethasone interactionBeclomethasone DipropionateQNASL, Qvar
How Beclomethasone Dipropionate interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Beclomethasone Dipropionate interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Beclomethasone Dipropionate interactionBetamethasoneCelestone, Diprolene AF, Diprosone
How Betamethasone interacts with Thymulus — through 2 ingredients. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Betamethasone interactionDietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Betamethasone interactionBetamethasone DipropionateSernivo
How Betamethasone Dipropionate interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Betamethasone Dipropionate interactionBetamethasone Dipropionate, CalcipotrieneEnstilar, Wynzora
How Betamethasone Dipropionate, Calcipotriene interacts with Thymulus — through 1 ingredient. Tap an ingredient for the detail:
Astragalus Root ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, astragalus might interfere with immunosuppressive therapy.
Read the full Astragalus Root Extract + Betamethasone Dipropionate, Calcipotriene interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Thymulus 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.
Dietary Fiber
Carbamazepine (Tegretol)
Theoretically, black psyllium might reduce the effects of carbamazepine and increase the risk for convulsions.
Theoretically, black psyllium might reduce carbamazepine absorption. A preliminary study using blond psyllium reported decreased carbamazepine bioavailability due to binding of the drug to psyllium, as well as reduction of available fluid in the gut for dissolution of the drug. This interaction may also occur with black psyllium.
Lithium
Theoretically, taking black psyllium at the same time as lithium might reduce lithium absorption.
The fiber in black psyllium might reduce lithium absorption and plasma levels. Some case reports describe a reduction in plasma lithium levels with concomitant administration of blond psyllium. This was reversed when psyllium was stopped. This interaction may also occur with black psyllium.
Metformin (Glucophage)
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Animal research shows that concurrent consumption of blond psyllium with metformin slows and increases the absorption of metformin. This interaction may also occur with black psyllium. To avoid changes in absorption, take psyllium 30-60 minutes after metformin.
Olanzapine (Zyprexa)
Theoretically, taking black psyllium at the same time as olanzapine might reduce olanzapine absorption.
The fiber in black psyllium might decrease the absorption of olanzapine. A single case report describes a reduction in the effectiveness of olanzapine when it was concomitantly administered with an unspecified type of psyllium 3 grams orally twice daily. This effect was reversed when psyllium was stopped.
Digoxin (Lanoxin)
Theoretically, taking black psyllium at the same time as digoxin might reduce digoxin absorption and decrease digoxin levels.
Psyllium might bind digoxin in the gut. However, some clinical evidence suggests that psyllium does not impact digoxin absorption.
Ethinyl Estradiol
Theoretically, taking black psyllium at the same time as ethinyl estradiol might alter levels of estradiol.
Concurrent use of blond psyllium with ethinyl estradiol results in a slight increase in the extent of ethinyl estradiol absorption and a slower rate of absorption. This is unlikely to be clinically significant.
Oral Drugs
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Psyllium seems to have variable effects on drug absorption. To avoid changes in absorption, take psyllium 30-60 minutes after oral medications. Animal research shows that blond psyllium delays and increases the absorption of metformin and ethinyl estradiol. Case reports and animal research suggest that blond psyllium might reduce absorption of lithium, digoxin, olanzapine, and carbamazepine. Finally, some pharmacokinetic studies show that psyllium does not affect the absorption of levothyroxine or warfarin. Although many of these studies evaluated blond psyllium, the fiber content in black psyllium may have similar effects.
Astragalus root extract
Antidiabetes Drugs
Theoretically, taking astragalus with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical research in humans shows that astragalus might have hypoglycemic effects. Theoretically, taking astragalus, especially in combination with other hypoglycemic agents, might increase the risk of hypoglycemia.
Cyclophosphamide
Theoretically, astragalus might interfere with cyclophosphamide therapy.
Evidence regarding the effect of astragalus on immunosuppression caused by cyclophosphamide is conflicting. Some animal research suggests that astragalus reverses cyclophosphamide-induced immunosuppression. However, other animal research shows no effect.
Immunosuppressants
Theoretically, astragalus might interfere with immunosuppressive therapy.
Astragalus seems to stimulate immune function. Theoretically, taking astragalus might decrease the effects of immunosuppressive therapy.
Lithium
Theoretically, astragalus might increase levels and adverse effects of lithium.
Animal research suggests that astragalus has diuretic properties. Theoretically, due to this diuretic effect, astragalus might reduce excretion and increase levels of lithium.
Brand information
Manufacturer and brand details for Thymulus, from the product label.
Nature's Way
See all Nature's Way products- Name
- Nature's Way Brands, LLC (previously branded Enzymatic Therapy, LLC)
- City
- Green Bay
- State
- WI
- ZipCode
- 54311
- Phone Number
- 1-800-962-8873
- Web Address
- naturesway.com
Thymulus by Nature's Way: Common Questions
Does Thymulus by Nature's Way interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this if I'm pregnant or breastfeeding?
What are the side effects?
What does astragalus do?
What's thymus powder?
Does this product have fillers?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Thymulus is safe with your meds?
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 Thymulus’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Black Psyllium
Interacts with 2,025 drugsBlack psyllium is a soluble-fiber supplement made from the seeds of a Plantago plant, used mostly to ease constipation and support digestive health. It is best known and most studied for rel...
Read the full Black Psyllium monograph → Herb & supplement monographAstragalus
Interacts with 208 drugsAstragalus is a root used for centuries in traditional Chinese medicine, mainly to support the immune system and help the body cope with stress. While early studies are interesting, strong h...
Read the full Astragalus monograph →Sources & How We Checked
Thymulus'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 31 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Black Psyllium 18 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.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Covington TR, et al. Handbook of Nonprescription Drugs. 11th ed. Washington, DC: American Pharmaceutical Association, 1996.
- Etman M. Effect of a bulk forming laxative on the bioavailablility of carbamazepine in man. Drug Dev Ind Pharm 1995;21:1901-6.
- Perlman BB. Interaction between lithium salts and ispaghula husk. Lancet 1990;335:416.
- Vaswani SK, Hamilton RG, Valentine MD, Adkinson NF. Psyllium laxative-induced anaphylaxis, asthma, and rhinitis. Allergy 1996;51:266-8. PubMed
- Lantner RR, Espiritu BR, Zumerchik P, Tobin MC. Anaphylaxis following ingestion of a psyllium-containing cereal. JAMA 1990;264:2534-6. DOI
- Kaplan MJ. Anaphylactic reaction to "Heartwise." N Engl J Med 1990;323:1072-3. DOI
- Nordstrom M, Melander A, Robertsson E, Steen B. Influence of wheat bran and of a bulk-forming ispaghula cathartic on the bioavailability of digoxin in geriatric in-patients. Drug Nutr Interact 1987;5:67-9..
- Robinson DS, Benjamin DM, McCormack JJ. Interaction of warfarin and nonsystemic gastrointestinal drugs. Clin Pharmacol Ther 1971;12:491-5. PubMed
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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