Ingredient
Gymnema sylvestre in ZenCortex: What the Label and the Research Say
Gymnema sylvestre is the eighth of 22 lines in the ZenCortex Proprietary Herbal Blend, a leaf extract of an Indian vine. By label order it can weigh at most 25 mg per 1 mL serving, and no amount is printed. We could not find an authoritative page on it, so we make no evidence claim. Ask a pharmacist if you take diabetes medicine.
Written by the ZenCortex label deskUpdated
The ingredient01
What is Gymnema sylvestre in ZenCortex?
Gymnema sylvestre is the leaf of a vine from India, and ZenCortex lists it as "Gymnema (leaf) extract (Gymnema sylvestre)". It is line 8 of 22 in the blend.
The plant is a traditional Ayurvedic herb, sometimes nicknamed "sugar destroyer". The seller's info page links it to hearing with the line "Supports hearing".
That line is a sales claim. The bottle itself claims only "Supports Healthy Hearing†" for the whole formula, and does not credit any single ingredient.
A word on sources. We could not find an authoritative page on gymnema among those we checked, so this profile makes no claim about what gymnema does. Where we say anything, it comes from the label arithmetic or from general advice on supplements (NCCIH, Using Dietary Supplements Wisely).
| Name on the label | Gymnema (leaf) extract (Gymnema sylvestre) |
|---|---|
| What it is | Leaf of an Indian vine, called 'sugar destroyer' |
| Place on the label | Line 8 of 22 in the 200 mg proprietary blend |
| Amount per serving (1 mL) | At most 25 mg per 1 mL serving (label order); 9.1 mg if the 22 lines were split evenly |
| What research used | No cited page found for a dose |
| Strength of evidence | We could not fetch an authoritative page for gymnema, so we make no evidence claim about it, and nothing links it to hearing |
| Marketed or traditional use | Traditional Ayurvedic herb ('Supports hearing' on the info page) |
| Main caution | Often described as lowering blood sugar; ask a doctor or pharmacist if you take diabetes medicine. |
Label position02
How much Gymnema sylvestre is in ZenCortex?
The label does not say. Gymnema is line 8, so label order caps it at 25 mg per serving, which is 200 divided by 8.
The cap comes from the weight rule for blends (eCFR, 21 CFR 101.36 Supplement Facts). Each line weighs at least as much as the one after it, so eight lines cannot together pass 200 mg, and the eighth cannot exceed an eighth of it.
Two droppers a day would give at most 50 mg of gymnema extract. An even split would be about 9.1 mg per serving, and the label sets no floor, so the real amount could be below that.
| Place in the blend | 8 of 22 |
|---|---|
| Most per serving | 25 mg |
| Most per day (2 droppers) | 50 mg |
| Even split (for comparison) | About 9.1 mg |
| Amount printed | None |
Doses03
What dose of Gymnema sylvestre is used in studies?
We found no authoritative page that gives one, so we quote no dose.
That is a real gap, not a hidden number. Many ingredient guides online print doses without naming where they come from, and we did not want to repeat a figure we could not trace to a source.
What the label arithmetic does show is the upper limit for this product: 25 mg a serving, 50 mg a day at two droppers. Anyone comparing that to a published dose should check the form of the extract first, since leaf powder and a concentrate differ.
A fair question to put to the seller is: how many milligrams of gymnema are in one dropper, and how strong is the extract? The contact page lists the order desk.
Evidence04
Does Gymnema sylvestre help hearing?
We cannot say it does. We found no authoritative source linking gymnema to hearing, and we found none testing it for anything.
That is different from saying it has been disproven. It means the claim "Supports hearing" has nothing behind it in our source set.
What we can say about hearing in general is better documented. The NIDCD states that no supplement has been proven to relieve tinnitus (NIDCD, Tinnitus). Age-related hearing loss is common (NIDCD, Age-Related Hearing Loss), and a hearing test is the useful first step (NIDCD, Who Can I Turn to for Help with Hearing Loss).
Blood sugar and ears do connect in one way. People with diabetes have about twice the rate of hearing loss of same-age people without it (CDC, Diabetes and Hearing Loss). That is about managing diabetes, not about this herb.
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See packsCautions05
Should you ask a doctor before taking Gymnema sylvestre?
Yes, if you take diabetes medicine. Gymnema is often described as lowering blood sugar, though we have no authoritative page that confirms it, so treat it as a reason to ask.
A pharmacist can tell you whether any herb in a formula matters for your medicines. NCCIH advises telling all your health care providers about every supplement you take, and following label directions (NCCIH, Using Dietary Supplements Wisely).
If you have diabetes, a low blood sugar reaction (shakiness, sweating, confusion) after starting a new supplement is a reason to call your clinician. Do not adjust insulin or tablets yourself.
Do not stop or change a diabetes medicine because you started drops. See ZenCortex side effects and supplements and medicines.
Marketing check06
Is the 'Supports hearing' claim for Gymnema sylvestre backed up?
No. It is a line on the seller's info page, and our sources contain nothing that backs it.
The FTC expects claims in marketing to be backed by evidence (FTC, Health Products Compliance Guidance). A traditional use is not the same as evidence for a specific benefit.
The bottle is more modest. It says "Supports Healthy Hearing†", and the dagger points to the statement that FDA has not evaluated the claim (FDA, Dietary Supplements). FDA does not approve supplements before they are sold.
Keep reading07
Which ingredient page should I read after Gymnema sylvestre?
Line 9, forskolin, is on the forskolin, grapefruit seed and raspberry ketones page. Line 7 is green tea extract.
See the supplement facts page and the ZenCortex price guide.
FAQ08
ZenCortex questions people ask
Why is Gymnema sylvestre called sugar destroyer?
It is a nickname for the plant used in Ayurvedic tradition. We found no authoritative page on gymnema, so we make no claim about what it does. The ZenCortex label simply lists the leaf extract.
Does Gymnema sylvestre lower blood sugar?
It is often described that way, but we could not find an authoritative page to confirm it. If you take diabetes medicine, ask your doctor or pharmacist before using drops that list it.
How much Gymnema sylvestre is in one ZenCortex dropper?
At most 25 mg, which is 200 mg divided by 8, because it is listed eighth. The label sets no floor and prints no amount, so the true figure is unknown to buyers.
Is there proof that Gymnema sylvestre supports hearing?
We found none. The info page says "Supports hearing", but no source in our set tests gymnema for hearing. The bottle's own claim covers the whole formula and carries the FDA statement.
Can people with diabetes take ZenCortex?
Ask a clinician first. Gymnema is often described as lowering blood sugar and chromium may add to diabetes medicine (NIH ODS, Chromium fact sheet). Keep taking your prescribed medicine and monitor as your doctor advises.
Why does the ZenCortex page list Gymnema sylvestre at line 8?
The label lists blend lines from most to least by weight (eCFR, 21 CFR 101.36 Supplement Facts). Eighth place means seven lines weigh at least as much, so gymnema can weigh at most 25 mg.
Who wrote this09
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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