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Dietary supplement

Cordyceps Select Ingredients & Drug Interactions

by Moss Nutrition

Cordyceps Select label
See full label image
Capsule Category: Non-nutrient/non-botanical
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 Cordyceps Select 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

Cordyceps Select is a dietary supplement by Moss Nutrition with 1 active ingredient. Its ingredients are commonly taken for fatigue and low energy, athletic performance and stamina, respiratory and lung support.Based on those ingredients, 249 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Cordyceps (Cs-4) mycelia extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Cordyceps Select by Moss Nutrition

Ask about any prescription or over-the-counter medication and we check it for interactions with Cordyceps Select by Moss Nutrition — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Cordyceps Select by Moss Nutrition

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

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 23, 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 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

Cordyceps Select contains one active ingredient: cordyceps (Cs-4) mycelia extract, a fungal compound traditionally used for stamina and vitality. The capsule also holds inactive ingredients — cellulose, microcrystalline cellulose, vegetable stearate, and silicon dioxide — which are fillers and binders that help form the capsule.

Does it work?

Couldn't assess
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 assessable

We hold no graded evidence for this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: supports immunity and vitality.
  • Our graded evidence for these ingredients doesn't cover that particular purpose.

The evidence for cordyceps is mixed and often limited. For athletic performance, the data suggests it's possibly ineffective.

For sexual dysfunction, arrhythmia (irregular heartbeat), asthma, lung cancer, and chronic obstructive pulmonary disease (COPD), there isn't enough reliable evidence to say whether it works. If you're considering this for a specific health goal, talk it over with your doctor about whether the evidence supports its use.

The evidence, ingredient by ingredient Cordyceps

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 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Cordyceps is generally well tolerated when used for up to a year, though the long-term safety data is sparse and product quality varies significantly between brands. The most common side effects are mild: abdominal discomfort, constipation, and diarrhea, though these are uncommon and can often be reduced by taking it with food.

There's one case report of liver inflammation (hepatitis) in someone taking a cordyceps product, but it's unclear whether cordyceps or a contaminant caused it. The safety data during pregnancy and breastfeeding isn't robust enough — the facts advise against use during both periods.

Talk with your doctor or pharmacist if you're pregnant, planning pregnancy, or breastfeeding.

Side effects, ingredient by ingredient Cordyceps

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?
  • 1 of the 1 matched ingredient can interact with medications — Cordyceps.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs.
  • For scale: 249 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.

Before you start Cordyceps Select, double-check with your doctor or pharmacist if you take blood thinners or antiplatelet drugs (like warfarin or aspirin) — cordyceps may increase bleeding risk. Also confirm if you're on immunosuppressants (like cyclosporine) or testosterone therapy, both of which may be affected.

These are Moderate to Minor interactions, but they need to be confirmed against your exact medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Cordyceps Select is a single-ingredient supplement that's generally well tolerated short-term, but the effectiveness evidence for most health claims is weak or absent. It does interact with blood thinners, immunosuppressant drugs, and testosterone therapy, so check with your doctor or pharmacist before starting, especially if you take any of those.

Pregnancy and breastfeeding are times to avoid it until you've discussed it with your healthcare provider.

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

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Oct 24, 2022.

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 Cordyceps Select, straight from the product label.

Brand Moss Nutrition
Barcode (UPC) M130
Net contents 90 Vegetarian Capsule(s)
Market status On market
Date entered into DSLD Oct 24, 2022
DSLD ID 275506
Product type Non-nutrient/non-botanical
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 Cordyceps Select by Moss Nutrition, 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:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
45
UPC/BARCODE
M130
IngredientAmount% DV
Cordyceps (Cs-4) mycelia extract1000 mg--

Other ingredients: Cellulose, Microcrystalline Cellulose, Vegetable Stearate, Silicon Dioxide

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.
Suggested/Recommended/Usage/Directions

Suggested Use: 2 capsules per day or as directed by your healthcare professional.

Precautions

Warning: If you are taking medication, have a medical condition or an upcoming medical procedure, or are pregnant or nursing, consult a physician before using.

If adverse reactions occur, discontinue use and consult your healthcare practitioner.

Keep out of reach of children.

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 disease.

Brand IP Statement(s)

Moss Nutrition Professional supplements Est. 1991

Formula

Mushroom mycelia extract

Formulation

Supports immunity & vitality

Does not contain gluten.

FDA Statement of Identity

Dietary Supplement

Storage

Store sealed in a cool, dry place.

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

See for yourself

Cordyceps Select by Moss Nutrition label

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

Cordyceps Select 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 Cordyceps Select by Moss Nutrition

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size2 Capsule(s) Dosage formCapsule Servings per container45 Amounts shown are per serving.

Cordyceps (Cs-4) mycelia extract

Interacts with
249 drugs
1000 mg per serving

Cordyceps is a fungus used in traditional Chinese medicine for energy, exercise performance, and lung and immune support. Human research is limited an...

Cordyceps (Cs-4) mycelia extract monograph & interactions

Other (inactive) ingredients: Cellulose, Microcrystalline Cellulose, Vegetable Stearate, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Cordyceps Select by Moss Nutrition Drug Interactions

Want to check YOUR meds against Cordyceps Select?

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
249Drugs
241 Moderate 8 Minor

Ingredients driving the most interactions

Cordyceps (Cs-4) mycelia extract 249

Individual Drug Interactions

The ingredients in Cordyceps Select interact with 249 drugs. Click any drug to see the details.

1 of the 1 ingredient in Cordyceps Select interact with drugs. Each result below shows which ingredient is responsible. Cordyceps (Cs-4) mycelia extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Cordyceps Select with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Cordyceps (Cs-4) mycelia extract3 drug types · 249 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, cordyceps may increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
In vitro and animal research suggests that cordyceps extract inhibits platelet aggregation and function. However, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Immunosuppressants

Theoretically, concurrent use of cordyceps might interfere with immunosuppressive therapy.
Animal and in vitro research suggests that cordyceps stimulates the immune system. However, limited clinical research suggests that taking cordyceps may lower the necessary therapeutic dose of the immunosuppressant cyclosporine, which suggests that cordyceps may have an immunosuppressive effect.

Likelihood Possible Evidence B
Testosterone

Theoretically, concurrent use of cordyceps and testosterone might have additive effects.
Animal research suggests that cordyceps can increase testosterone levels. The clinical significance of this finding is unclear.

Likelihood Possible Evidence D
Cordyceps (Cs-4) mycelia extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Cordyceps Select, from the product label.

Moss Nutrition

See all Moss Nutrition products
Name
Moss Nutrition Products, Inc.
Street Address
380 Russell Street
City
Hadley
State
MA
ZipCode
01035
Phone Number
800-851-5444
Web Address
www.mossnutrition.com
Pharmacist Counseling Corner

Cordyceps Select by Moss Nutrition: Common Questions

Does Cordyceps Select by Moss Nutrition interact with any medications?
Yes. Based on its ingredients, Cordyceps Select has a known interaction with 249 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Cordyceps Select contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take this if I'm pregnant or breastfeeding?
The safety data isn't there yet — the facts advise against cordyceps during pregnancy and while breastfeeding. Talk with your doctor or pharmacist before taking it in either situation; they can weigh the risks and benefits for your personal health.
What are the most common side effects?
Abdominal discomfort, constipation, and diarrhea show up in the research, but they're uncommon. Dry mouth and throat discomfort have also been reported. Taking cordyceps with food may help reduce these symptoms.
Does cordyceps work for athletic performance?
The evidence suggests it's probably not effective for athletic performance. If you're looking for a stamina boost, talk with your doctor or a sports medicine specialist about what's supported by evidence.
Is there any risk to my liver with this supplement?
There's one case report of liver inflammation in someone taking a cordyceps product, but it's unclear whether cordyceps itself or a contaminant caused it. It's rare, but if you have liver disease or concerns, flag it with your pharmacist or doctor before starting.
How long can I safely take cordyceps?
Cordyceps appears to be generally well tolerated for up to 1 year in the research. Beyond that, the safety data is limited. If you're taking it long-term, check in with your healthcare provider periodically.

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

Not sure if Cordyceps Select is safe with your meds?

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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.

Cordyceps Select label
Go deeper

The Full Monographs Behind Cordyceps Select’s Ingredients

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

Herb & supplement monograph

Cordyceps

Interacts with 249 drugs

Cordyceps is a fungus used in traditional Chinese medicine for energy, exercise performance, and lung and immune support. Human research is limited and mostly low quality, so its benefits ar...

Read the full Cordyceps monograph →
Sources

Sources & How We Checked

Cordyceps Select'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 14 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.

Cordyceps 14 references
  1. Zhu JS, Halpern GM, Jones K. The scientific rediscovery of an ancient Chinese herbal medicine: Cordyceps sinensis: part I. J Altern Complement Med 1998;4:289-303.
  2. Zhu JS, Halpern GM, Jones K. The scientific rediscovery of a precious ancient Chinese herbal regimen: Cordyceps sinensis: part II. J Altern Complement Med 1998;4:429-57.
  3. Chen YJ, Shiao MS, Lee SS, Wang SY. Effect of Cordyceps sinensis on the proliferation and differentiation of human leukemic U937 cells. Life Sci 1997;60:2349-59. PubMed
  4. Zhao Y. [Inhibitory effects of alcoholic extract of Cordyceps sinensis on abdominal aortic thrombus formation in rabbits]. Chung Hua I Hsueh Tsa Chih (Taipei) 1991;71:612-5, 42.
  5. Chen GZ, Chen GL, Sun T, et al. Effects of Cordyceps sinensis on murine T lymphocyte subsets. Chin Med J (English) 1991;104:4-8.
  6. Zhu XY, Yu HY. [Immunosuppressive effect of cultured Cordyceps sinensis on cellular immune response]. Chung Hsi I Chieh Ho Tsa Chih 1990;10:485-7, 454.
  7. Hsu, C. C., Huang, Y. L., Tsai, S. J., Sheu, C. C., and Huang, B. M. In vivo and in vitro stimulatory effects of Cordyceps sinensis on testosterone production in mouse Leydig cells. Life Sci 9-5-2003;73(16):2127-2136. PubMed
  8. Ikumoto, T., Sasaki, S., Namba, H., Toyama, R., Moritoki, H., and Mouri, T. [Physiologically active compounds in the extracts from tochukaso and cultured mycelia of Cordyceps and Isaria]. Yakugaku Zasshi 1991;111(9):504-509. PubMed
  9. Wu, T. N., Yang, K. C., Wang, C. M., Lai, J. S., Ko, K. N., Chang, P. Y., and Liou, S. H. Lead poisoning caused by contaminated Cordyceps, a Chinese herbal medicine: two case reports. Sci.Total Environ. 4-5-1996;182(1-3):193-195. PubMed
  10. Hong T, Zhang M, Fan J. Cordyceps sinensis (a traditional Chinese medicine) for kidney transplant recipients (Review). Cochrane Database Syst Rev. 2015;(10):CD009698. doi: 10.1002/14651858.CD009698.pub2.
  11. Zhang HW, Lin ZX, Tung YS, Kwan TH, Mok CK, Leung C, Chan LS. Cordyceps sinensis (a traditional Chinese medicine) for treating chronic kidney disease (Review). Cochrane Database Syst Rev. 2014;(12):CD008353. doi: 10.1002/14651858.CD008353.pub2. PubMed
  12. Bee Yean O, Zoriah A. Efficacy of Cordyceps sinensis as an adjunctive treatment in hemodialysis patients: a systematic review and Meta-analysis. J Tradit Chin Med. 2019;39(1):1-14.
  13. Thurian D, Montani M, Stickel F. Drug-induced, mixed-type hepatitis following ingestion of Cordyceps sinensis. Int J Clin Pharmacol Ther 2022;60(2):115-120. PubMed
  14. Yu X, Mao Y, Shergis JL, et al. Effectiveness and safety of oral Cordyceps sinensis on stable COPD of GOLD stages 2-3: Systematic review and meta-analysis. Evid Based Complement Alternat Med. 2019;2019:4903671.

See these in context on the Cordyceps monograph →

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

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