Ingredient
NervoMax Green Tea Extract: What Does 50% Mean, and What Are the Liver and Drug Cautions?
NervoMax green tea extract is listed ninth and last in the blend as Green Tea Extract (50%), with no amount and no caffeine figure. Concentrated green tea extracts have been linked to rare liver injury, mostly in capsules. Extracts can also lower the levels of some heart drugs. Ask your doctor first if this applies to you.
Written by the NervoMax editorial team · Medically reviewed by Dr. Alaa Abd-Elsayed, MD, PhysicianReview date · Last updated · 6 min read
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Key facts
What are the key facts about NervoMax green tea extract?
- The label reads Green Tea Extract (50%), ninth and last in the 600 mg blend per 2 capsules.
- The amount is not printed, and the label prints no caffeine figure.
- The 50% describes the extract itself. It is not the extract's share of the blend.
- More than 100 cases of liver injury have been linked to green tea extract, mostly with concentrated capsules.
- EFSA tied 800 mg or more of EGCG a day to early liver signs.
- Extracts can lower the levels of nadolol and atorvastatin.
- No source we cite links green tea extract to nerve health.
Plain words
What is NervoMax green tea extract, and why is it there?
NervoMax green tea extract is the last name on the ingredient list, and the label gives no reason for it.
Green tea extract is a concentrate of the leaves of Camellia sinensis. It carries catechins, a group of plant compounds that includes EGCG, plus a little caffeine. The label does not say why it is in NervoMax, and no source we cite links it to nerve health.
It is ninth of nine in the Test Boost Proprietary Blend. Blend ingredients run from most to least by weight, so green tea extract is the lightest part.
Label wording
What does 50% mean on NervoMax green tea extract?
It usually means the extract is standardized, so half its weight is a marker compound. For green tea that is typically catechins or polyphenols. The NervoMax label does not say which one, so the exact meaning is not published.
The 50% is not the extract's share of the blend. It describes the extract itself. The panel gives the standard, 50%, but no weight.
See every line of the label on our Supplement Facts page.
The math
How much green tea extract could NervoMax hold?
Nine ingredients share one 600 mg total. The lightest of nine cannot weigh more than the average. An even split is about 67 mg, so green tea extract tops out near 67 mg per 2 capsules. At 50%, that would be about 33 mg of the marker compound at most. The real figure could be much lower.
Compare that with the safety figure. The European Food Safety Authority tied 800 mg or more of EGCG a day to early liver signs. The ceiling here is far below that. But the label does not print the amount, and extracts from other products add up, so the ceiling is a guide and not a promise.
There is no caffeine figure on the label either. If you are sensitive to caffeine, count your coffee, tea and other supplements.
Liver
Can NervoMax green tea extract hurt the liver?
Rarely, yes. More than 100 cases of liver injury have been linked to green tea extract. Symptoms usually start 1 to 6 months after people begin taking it. Most cases involve concentrated extract capsules, not brewed tea.
Stop NervoMax and call your doctor if you notice yellow skin or eyes, dark urine, pain in the upper right belly, nausea or unusual tiredness. Bring the bottle so the doctor can see every ingredient.
If you have liver disease or drink heavily, ask your doctor before taking any green tea extract product. The same applies if you take blood thinners, as the site's safety notes advise. Our safety post covers the other cautions.
Medicines
Does NervoMax green tea extract interact with medicines?
Green tea extracts can lower the levels of nadolol and atorvastatin. A lower level of a prescribed medicine could matter, so ask. The site also lists heart medicine, blood thinners and diabetes medicine among the cases that need a question before you start.
The practical step is simple. Write down every medicine and supplement you take, bring the NervoMax bottle, and ask your doctor or pharmacist to check them together. Do not stop a prescribed medicine on your own.
Read the full ingredient page on green tea extract for the numbers behind these cautions.
Label, price, guarantee
What are the NervoMax green tea extract facts in one table?
| Item | What is published |
|---|---|
| Label name | Green Tea Extract (50%) |
| Position in the blend | 9 of 9 |
| Amount on the label | Not published |
| Caffeine figure | Not printed |
| Ceiling from label order | About 67 mg of the extract per 2 capsules; about 33 mg of marker at 50% |
| Liver signs in research | At 800 mg or more of EGCG a day |
| Evidence for nerves | None found |
Sources
Where do the facts on this page come from?
Product and seller facts come from the bottle label and this site's own pages. Outside facts link below or are named on the linked ingredient pages.
- Questions and Answers on Dietary Supplements. U.S. Food and Drug Administration, 2026.Structure and function claims carry a standard FDA statement, and the FDA does not approve supplements before sale.
Who wrote this
Who wrote and reviewed this page?
Plain-language pages built from the bottle label and linked public health sources such as NIH, FDA and Cochrane.
Last updated . Read our editorial standards and how we check reviews. This website is run by Nervomax, a USA authorized NervoMax retailer, not by the manufacturer. We earn money when you buy through our order links.
FAQ
Frequently asked questions
How much green tea extract is in NervoMax?
The label does not print it. As the last of nine ingredients it cannot weigh more than the average, about 67 mg per 2 capsules.
What does Green Tea Extract (50%) mean?
It usually means the extract is standardized so half its weight is a marker compound. The label does not say which compound.
Does NervoMax contain caffeine?
The label prints no caffeine figure. Green tea extract carries a little caffeine, so the amount is unknown.
Can green tea extract harm the liver?
Rarely. More than 100 cases have been linked to it, mostly with concentrated capsules. Stop and call your doctor if you notice yellow skin or eyes, dark urine or upper right belly pain.
Does it interact with medicines?
Extracts can lower the levels of nadolol and atorvastatin. Ask your doctor or pharmacist if you take either, or blood thinners or other heart medicine.
Does green tea extract help nerves?
No source we cite links it to nerve health.
Our view
Our view
Our view: green tea extract is the smallest part of the blend and still the one with a liver warning attached. That is not a reason to panic. It is a reason to ask.
Tell your doctor about NervoMax, show the bottle, and speak up early if you feel unusually tired or notice dark urine.
NervoMax is a dietary supplement. It is not FDA approved, and no dietary supplement is approved by the FDA before sale. It is not intended to diagnose, treat, cure or prevent any disease. This page is general information, not medical advice. Ask your doctor about any medical question or symptom.
Last updated .
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