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Eleuthero: The 'Siberian Ginseng' Adaptogen Explained
Eleuthero is a woody shrub root, also called Siberian ginseng, that herbal traditions call an adaptogen. Human studies are quite limited and do not show clear clinical benefit. It is the fifth line in the ZenCortex blend, with no printed amount, and no study links it to hearing (MSK, Siberian Ginseng (Eleuthero)).
Written by the ZenCortex label deskUpdated · 4 min read
What is eleuthero, and is it real ginseng?
Eleuthero (Eleutherococcus senticosus) is a shrub whose root is dried and made into extracts. It is often called Siberian ginseng, yet it is not Panax ginseng.
The two plants share a nickname and little else. ZenCortex lists both: eleuthero in fifth place and Asian ginseng in twelfth, so the label treats them as separate lines.
The word adaptogen comes from herbal tradition. It is a marketing label, not a medical category.
You can find the root on the bottle itself. Tap the numbered spots on the bottle to read the label claim and the blend panel beside it.
Tap a number to read that part of the bottle.
- Black cap and dropper
A black bulb and dropper. One full dropper is the 1 mL serving.
- Amber glass
Dark glass protects the liquid from light.
- ZenCortex
The product name on the bottle label.
- Supports Healthy Hearing†
The label claim, with the FDA dagger.
- Hearing Support Formula
A product name, not a tested property.
- Directions and caution panel
The back-label text, shown beside the bottle.
- Supplement Facts panel
Serving size 1 mL; chromium 0.7 mcg; 200 mg blend of 22 lines.
What do studies say about eleuthero?
The studies on eleuthero are few and small. Memorial Sloan Kettering says human research is quite limited and that lab findings do not establish a clinical benefit (MSK, Siberian Ginseng (Eleuthero)).
Its own example is a small trial of an herbal mixture for knee osteoarthritis, which is not a test of eleuthero alone. Traditional use covers stamina, strength and immunity, and those uses lean on custom more than on trials.
For hearing, we found nothing at all. The label claim, "Supports Healthy Hearing†", has no eleuthero trial behind it, and FDA does not approve supplements before sale (FDA, Dietary Supplements).
| Claim you may see | What the source says |
|---|---|
| Boosts stamina | Traditional use; human data limited |
| Supports immunity | Traditional use; no clinical benefit shown |
| Helps hearing | No study found |
How much eleuthero is in ZenCortex?
The amount of eleuthero in ZenCortex is not printed. The label gives one 200 mg total for 22 lines, listed from most to least by weight (eCFR, 21 CFR 101.36 Supplement Facts).
Eleuthero is line 5, so it can weigh at most 200 divided by 5, which is 40 mg per 1 mL dropper. An even split would be about 9.1 mg. The truth lies anywhere up to that ceiling.
ZenCortex: from $49 a bottle60 mL drops · 2, 3 or 6 bottles · free US shipping on 3 and 6 · 60-day guarantee
See packsWho should ask before taking eleuthero?
Anyone on digoxin, anyone breastfeeding and anyone taking a blood-related medicine should ask a pharmacist first. The Sloan Kettering page notes a case report of raised digoxin levels and says it may falsely raise digoxin test results (MSK, Siberian Ginseng (Eleuthero)).
It also describes a brain bleed in a woman taking a multi-herb product that contained eleuthero. One case proves nothing, but tell your care team about every supplement (NCCIH, Using Dietary Supplements Wisely).
ZenCortex is not for anyone under 18, pregnant or nursing. Keep taking prescribed medicine, and ask before adding drops.
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Info page prices, October 19, 2026 (ZenCortex info page). A 2-bottle pack is $158 plus shipping. The seller states a 60-day money-back guarantee. Compare all the packs.
If energy is your real goal, start with sleep and your doctor's questions; our post on all-day energy supplements walks through them. The ingredient page has the full detail: eleuthero in ZenCortex, and the ingredients overview shows every line.
FAQ01
ZenCortex questions people ask
Is eleuthero the same as ginseng?
No, eleuthero is a different plant from Panax ginseng, even though it is called Siberian ginseng. ZenCortex lists them as two separate lines: eleuthero fifth and Asian ginseng twelfth. They differ in plant family, traditional use and the research behind them.
Does eleuthero help hearing or tinnitus?
No study we found tests eleuthero for hearing or tinnitus. The NIDCD says no supplement has been proven to relieve tinnitus. Eleuthero is traditionally used for stamina, and even that rests on limited human studies (NIDCD, Tinnitus).
Can eleuthero affect a heart medicine?
Possibly. A case report describes raised digoxin levels, and the plant may falsely elevate digoxin lab tests. If you take digoxin, tell your pharmacist about every supplement before using drops that list eleuthero (MSK, Siberian Ginseng (Eleuthero)).
Who wrote this02
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, CDC, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by Thezencortex, a retailer of ZenCortex, not by the manufacturer. We earn money when you buy through our order links.
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