Epimedium and tribulus
Epimedium and Tribulus Terrestris in Quietum Plus: Evidence
Epimedium and Tribulus terrestris are two herbs on tile 2 of the Quietum Plus sales page. Both are sold for libido. Epimedium is studied mostly in labs and animals, and tribulus improved erection scores in men with ED but not testosterone. We found no hearing trial of either, and no amount is printed.
Written by the Quietum Plus label deskUpdated
01The two ingredients
What are epimedium and Tribulus terrestris?
Epimedium is a leafy herb used in traditional medicine. Tribulus terrestris is a ground-hugging plant whose fruit is sold as a supplement.
The sales page puts both herbs on tile 2 and adds no claim of its own to that tile (Quietum Plus sales page). The bottle front does not name either one, and no amount is printed anywhere we could read.
Both are known as libido herbs, and they sit in a capsule sold with a hearing message. The table lists what we know about each and what stays blank.
| Name on the sales page | Epimedium |
|---|---|
| What it is | Horny goat weed (Epimedium species), a leafy herb |
| Sales-page tile | Tile 2, no claim of its own |
| Group (ours) | Roots sold for vitality |
| Amount in a capsule | Not printed |
| Usually sold or studied for | Traditional kidney tonic sold for libido; the research is mostly lab and animal work |
| Research on hearing or tinnitus | No hearing or tinnitus trials found |
| Main caution | A review notes possible liver toxicity of crude extracts in lab studies; human safety data are thin. |
| Name on the sales page | Tribulus Terrestris |
|---|---|
| What it is | Puncture vine fruit and leaf |
| Sales-page tile | Tile 2, no claim of its own |
| Group (ours) | Roots sold for vitality |
| Amount in a capsule | Not printed |
| Usually sold or studied for | Sold for testosterone and erections; in men with ED it improved erection scores but not testosterone |
| Research on hearing or tinnitus | No hearing or tinnitus trials found |
| Main caution | Side effects matched placebo in ED trials; ask first if you take daily medicine. |
The tile photo shows pink flowers among green leaves, a vendor picture of the plant. It is not the capsule contents.
02The name
Why is epimedium called horny goat weed?
It is a nickname that comes from folk stories about goats, and it tells you what the herb is sold for, not what it does.
Epimedium is sold under the name horny goat weed, and the sales page uses only the plain name. The nickname points to its main market: sexual vitality. In traditional medicine it is described as a kidney tonic used for conditions that include impotence, infertility and joint pain (Qian et al., Epimedium Review).
That use has nothing to do with the ear. The review we cite describes more than 379 compounds in the plant and mostly lab and animal work on the reproductive, heart and nervous systems, not human trials (Qian et al., Epimedium Review).
03Epimedium
What does the research say about epimedium safety?
The research is preclinical, and the review warns that crude extracts show potential liver toxicity.
The review states that crude epimedium extracts show potential hepatotoxicity, meaning harm to the liver, and that more safety and effectiveness work is needed (Qian et al., Epimedium Review). It describes lab and animal findings, so it cannot tell us how a capsule would act in a person.
Quietum Plus prints no epimedium amount or extract type. Another herb in the formula, ashwagandha, also has liver injury reports (LiverTox, Ashwagandha). Two liver cautions in one capsule is a good reason to tell your doctor if you have liver disease or take liver-affecting medicine.
Yellow skin or eyes, dark urine, strong itching or pain under the right ribs need prompt medical care. Do not wait for them to pass.
04Tribulus
What is Tribulus terrestris used for, and does it change testosterone?
It is used for sexual function. A pooled analysis found better erection scores but no change in testosterone.
A meta-analysis pooled eight studies in men with erectile dysfunction. Tribulus scored higher than placebo on erection questionnaires, and side effects did not differ from placebo. Total testosterone did not differ either (Suharyani et al., Tribulus ED Meta-analysis).
That is a narrow result: men with ED, scored on questionnaires. It says nothing about hearing, mood or memory, the lines on the bottle front.
| Herb | Human trials | Lab or animal | Hearing or tinnitus |
|---|---|---|---|
| Epimedium | None reviewed in our sources | Yes, with a liver warning (Qian et al., Epimedium Review) | None found |
| Tribulus terrestris | Yes, in men with ED (Suharyani et al., Tribulus ED Meta-analysis) | Not reviewed here | None found |
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See packs05Hearing
Do epimedium or tribulus help tinnitus?
No evidence says they do. We found no trial of either for ringing in the ears.
The NIDCD says none of the supplements advertised for tinnitus has been shown to work (NIDCD, Tinnitus). The 2026 US guideline advises clinicians not to recommend supplements for persistent, bothersome tinnitus (AAO-HNSF Tinnitus Update 2026).
When two libido herbs are in a hearing capsule, the label should explain why. Ours does not. Ringing needs its causes checked: noise, earwax, medicines and blood vessel problems are all on the list (Mayo Clinic, Tinnitus).
When ringing is a doctor question, not a supplement question
Sudden hearing loss in one ear (same day), ringing that beats with your pulse, ringing after a head injury, or ringing with dizziness, weakness or a drooping face. Call 911 for sudden weakness or a drooping face. Sources: NIDCD on sudden deafness (NIDCD, Sudden Deafness), the NHS (NHS, Tinnitus), Mayo Clinic (Mayo Clinic, Tinnitus) and the tinnitus guideline (AAO-HNSF Tinnitus Guideline 2014).
06Medicines
Can epimedium affect blood pressure or heart rhythm, and do these herbs interact with medicines?
Our sources do not cover blood pressure or heart rhythm, but interactions are the main worry with herbal sexual enhancers.
A safety review of herbal sexual enhancers found that most seemed safe at normal doses, but side effects can appear with overdosing or unstandardized products. It called drug interactions the bigger concern, because these herbs are taken with other extracts and medicines (Brunetti et al., Herbal Sexual Enhancers).
FDA also warns that many products sold for sexual enhancement have been found to hide drugs, and that an unlisted product is not necessarily safe (FDA, Sexual Enhancement Product Notifications). We have no evidence that Quietum Plus is one of them. We only note that the label does not print what a capsule holds.
- Tell your pharmacist about every medicine, especially for blood pressure, heart rhythm or the liver.
- Ask first if you take nitrates or ED drugs. L-arginine in the same capsule also lowers blood pressure (Mayo Clinic, L-arginine).
- Skip it if you are pregnant or nursing unless your doctor has seen the label (NCCIH, Using Dietary Supplements Wisely).
07Next
What should you check before taking Quietum Plus because of epimedium and tribulus?
Read the label, tell your pharmacist and get new ringing examined.
Keep taking any prescribed medicine; do not change it because of a supplement. Your bottle's label, not our pages, gives the serving and the warnings. See the label page for what to look for, and side effects for the full list of cautions. The next tile pairs two more herbs sold for vitality, on muira puama and ginger.
08FAQ
Epimedium and tribulus questions, short answers
What is epimedium?
Epimedium is a leafy herb used in traditional medicine as a kidney tonic, and it is sold for libido. Most research is in labs and animals, and a review warns that crude extracts show potential liver toxicity (Qian et al., Epimedium Review). It shares tile 2 with tribulus.
Why is epimedium called horny goat weed?
Horny goat weed is a folk nickname that points to its use for sexual vitality. The sales page uses only the plain name. The nickname describes what the herb is sold for and does not show that it works (Qian et al., Epimedium Review).
What is Tribulus terrestris used for?
Tribulus terrestris is sold for sexual function. In men with erectile dysfunction it improved erection scores over placebo, but total testosterone did not change (Suharyani et al., Tribulus ED Meta-analysis). The studies did not look at hearing, mood or memory.
Do epimedium or tribulus help tinnitus?
We found no trial of either herb for tinnitus. The NIDCD says no supplement advertised for ringing has been shown to work (NIDCD, Tinnitus). New or one-sided ringing needs a hearing exam, not a libido herb.
Can epimedium affect blood pressure or heart rhythm?
Our sources do not cover blood pressure or heart rhythm for epimedium, so we cannot say. The review only reports lab and animal findings and a liver warning (Qian et al., Epimedium Review). If you take heart or blood pressure medicine, ask your pharmacist first.
Do epimedium and tribulus interact with medicines?
Possibly. A review of herbal sexual enhancers called drug interactions more concerning than the herbs alone, since people combine them with other products (Brunetti et al., Herbal Sexual Enhancers). Bring the full bottle label to your pharmacist before the first capsule.
09Who wrote this
Written and reviewed by
Pages built from the bottle images, the sales page and linked NIH, NIDCD, FDA, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by Goquietumplus, a USA Authorized Quietum Plus Retailer, not by the manufacturer. We earn money when you buy through our order links.
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