FDA-registered, GMP-certified U.S. facility  /  60-day guarantee  /  Dietary supplement — not a treatment for erectile dysfunction
EreFil
Men's Energy & Circulation Support

Seven botanicals. And one conversation you should have first.

EreFil is a daily capsule built around Tongkat Ali, Horny Goat Weed, Saw Palmetto and four other traditional male-wellness botanicals. Before the sales copy, this page starts with the thing most sites in this category leave out entirely.

See Packages — From $49/Bottle Read Section 01 First
★★★★★ 4.3 / 5 · 690+ ratings
EreFil men's energy and circulation support capsules

The short version

EreFil is a daily two-capsule supplement for adult men containing Saw Palmetto, Wild Yam, Sarsaparilla, Nettle Leaf, Boron, Tongkat Ali and Horny Goat Weed, formulated to support energy, stamina and circulation. It is made in an FDA-registered, GMP-certified U.S. facility and sold with a 60-day money-back guarantee. It is not a treatment for erectile dysfunction — and if that is why you are here, please read Section 01 below before you order anything.

FormatCapsule — two daily, taken with food
IngredientsSeven botanicals and one trace mineral
Doses disclosedNo — the ingredients are named, the per-ingredient amounts are not published
Made forAdult men wanting general energy and stamina support alongside diet, sleep and exercise
ManufacturingFDA-registered, GMP-certified facility in the USA (registration is not FDA approval)
Price$79 per bottle for two, down to $49 per bottle on the six-bottle package
Guarantee60 days, money back
Talk to a doctor first ifYou take nitrates, blood pressure medication, blood thinners, finasteride or dutasteride (see safety)
NotA treatment for erectile dysfunction, low testosterone or an enlarged prostate
Seven inputs, one routine
01

If you are here because of erectile difficulty, read this

This is the part the marketing in this category almost never mentions, and it is more important than anything else on the page.

Erectile difficulty is often the first sign of heart disease

An erection depends on healthy blood vessels. So does your heart. Both problems commonly begin in the same place — damage to the endothelium, the inner lining of the blood vessels — and the arteries supplying the penis are narrower than the arteries supplying the heart, so they tend to show the problem first.

Mayo Clinic describes erectile dysfunction as an early warning sign of current or future heart problems, and notes it can be the first significant indication that a man's arteries are narrowing. In Mayo research, men aged 40 to 49 with erectile difficulty were roughly twice as likely to go on to develop heart disease. A 2024 international consensus panel went further and urged clinicians to treat it as a cardiovascular risk marker rather than a quality-of-life complaint.

So the useful thing is not a capsule. It is an appointment. A doctor can check blood pressure, cholesterol, blood sugar and testosterone, and can find something treatable while it is still early. Surveys suggest almost one in five men over 55 would not raise this with a healthcare professional. That is the single riskiest decision in this whole subject.

Please also see a doctor if

The change came on suddenly, it is getting worse, it is accompanied by chest discomfort, breathlessness on exertion, unusual fatigue, or by urinary changes such as a weak stream, difficulty starting, or getting up repeatedly at night. Those last ones point at the prostate and deserve proper assessment.

A word about this category

The FDA has issued recalls of horny goat weed products found to contain undeclared sildenafil — the active drug in Viagra — hidden in what was sold as a herbal supplement. For a man taking nitrates for angina, that combination can drop blood pressure dangerously. It is a good reason to buy only through an official channel, and a better reason to have the medical conversation first.

None of this means a wellness supplement is useless. It means it belongs alongside a diagnosis, not instead of one. Full safety page →

02

What is EreFil?

EreFil is a daily two-capsule dietary supplement for adult men containing seven ingredients: Saw Palmetto, Wild Yam, Sarsaparilla, Nettle Leaf, Boron, Tongkat Ali and Horny Goat Weed. It is formulated to support energy, stamina, circulation and everyday male vitality.

These are the familiar botanicals of the men's wellness aisle. Some have real research behind them — Tongkat Ali and Saw Palmetto in particular have been studied properly. Others are there mostly by tradition. The page below says which is which rather than describing all seven in the same confident tone.

One thing worth flagging before you read further: the per-ingredient amounts are not published for this product. The seven are named, but not how much of each is in a capsule. That matters, because without a number you cannot check any ingredient against the dose used in the research that supposedly supports it. Products that print their amounts make that check possible; this one does not.

It is manufactured in an FDA-registered, GMP-certified facility in the United States. To be precise about the phrase: that describes the manufacturing site and its standards. It is not FDA approval, because the FDA does not approve dietary supplement formulas. Read the longer explanation →

03

How is it supposed to work?

Three routes, described as what each ingredient group is included for — not as measured effects of the finished product.

Nitric oxide and blood flow

Horny goat weed contains icariin, which acts on the PDE5 enzyme — the same enzyme targeted by prescription ED medication — and is associated with nitric oxide activity and vessel relaxation.

Most of that research is in animals or laboratory work rather than human trials, and supplement potency varies widely. It is also precisely why this ingredient carries real interaction warnings with nitrates, blood pressure medication and PDE5 drugs.

Hormonal pathways

Tongkat Ali has the strongest human research in this formula for testosterone-related outcomes and fatigue. Boron is a trace mineral with some evidence relating to testosterone metabolism and bone health.

Saw palmetto works on androgen metabolism through 5-alpha-reductase — the same pathway as finasteride, which is why the two should not be casually combined.

Energy and general support

Nettle leaf contributes nutrients and is traditionally associated with prostate and urinary support. Sarsaparilla and wild yam are traditional inclusions with thinner modern evidence.

Being straight about wild yam: it contains diosgenin, which laboratories use as a starting material to manufacture hormones. The human body does not perform that conversion. Wild yam is often described as a natural hormone precursor, and that description does not hold up. See the mechanism breakdown →

04

The seven ingredients

What each one is, what the evidence actually looks like, and what it interacts with. Amounts are not published for this product.

01

Tongkat Ali

Eurycoma longifolia

The ingredient here with the most credible human research. A Southeast Asian root used traditionally for male vitality, studied in relation to testosterone-related outcomes, fatigue and exercise performance. Effects reported in trials are modest rather than dramatic, and it is a slow ingredient — studies typically run weeks, not days.

May not suit anyone with a hormone-sensitive condition, and some products in this category have been found adulterated. Buy through official channels only.
02

Horny Goat Weed

Epimedium sagittatum

Its active compound, icariin, acts on the PDE5 enzyme and is associated with nitric oxide and blood vessel relaxation. That is a genuine mechanism, but most of the supporting work is animal or in-vitro; human trials are limited and supplement strength varies a great deal between products.

The most interaction-heavy ingredient in this formula. May interact with sildenafil and tadalafil, with nitrates, with blood pressure medication and with blood thinners. Documented to affect the CYP3A4 enzyme, which processes many prescription drugs. Not suitable if you have heart disease or low blood pressure without medical advice. The FDA has recalled products in this category for containing undeclared sildenafil.
03

Saw Palmetto

Serenoa repens

Berry extract with a long history in prostate and urinary support, acting on androgen metabolism via 5-alpha-reductase. It is among the better-studied botanicals here, though trial results for urinary symptoms have been mixed, with several large studies finding little benefit over placebo.

Works on the same pathway as finasteride and dutasteride — do not combine without medical advice. Evidence on whether it lowers PSA readings is mixed, so tell your doctor you are taking it before any PSA test. May increase bleeding risk with blood thinners.
04

Nettle Leaf

Urtica dioica

Contains a range of nutrients and bioactive compounds, and has traditional use in prostate and urinary support — often paired with saw palmetto in European formulations. Research is modest but not absent.

Has a diuretic effect, so take advice if you use diuretics or blood pressure medication. May affect blood sugar and lithium levels.
05

Boron

Amino acid chelate

A trace mineral with some evidence relating to testosterone metabolism, bone health and the handling of calcium and magnesium. Typical dietary intake is a few milligrams a day.

Boron has an established upper intake level and higher amounts can cause nausea and other effects. Since this product does not publish its amount, that is a reason not to stack it with other boron-containing supplements.
06

Sarsaparilla

Smilax glabra

A traditional root used across several herbal systems, historically as a tonic. It appears in male wellness blends largely by convention. Modern human evidence for the outcomes claimed in this category is thin, and it is fair to treat it as a supporting inclusion rather than an active driver.

07

Wild Yam

Dioscorea villosa

Contains diosgenin, a compound that laboratories use as a chemical starting point for manufacturing steroid hormones. This is where the confusion comes from: the human body does not carry out that conversion. Eating or swallowing wild yam does not produce hormones in your body, whatever the marketing says. Treat it as a traditional botanical inclusion, not a hormonal ingredient.

Full ingredient page, with sources →

05

Is EreFil safe?

The review this page was drafted from said "no side effects reported". That is not a statement anyone can make about this ingredient list.

What actually needs checking

EreFil is a dietary supplement for healthy adult men. It does not diagnose, treat, cure or prevent erectile dysfunction, low testosterone, benign prostatic hyperplasia or any other condition, and it is not a substitute for medical assessment. No independent clinical trial of the finished formula has been published.

Do not take it without medical advice if you use

Nitrates for angina — this is the serious one, given horny goat weed's PDE5 activity and the documented adulteration risk in this category. Sildenafil, tadalafil or similar ED medication — overlapping mechanism. Blood pressure medication. Blood thinners or antiplatelet drugs — several ingredients here affect bleeding. Finasteride or dutasteride — saw palmetto works on the same pathway. Diuretics or lithium — nettle. Anything processed by CYP3A4 — epimedium is documented to affect it.

Before a PSA test

Tell your doctor you are taking a saw palmetto product. Evidence on whether it suppresses PSA readings is mixed, but a doctor interpreting a prostate screening result should know what you are taking. Do not let a supplement quietly complicate a cancer screening.

Who should not take it

Anyone under 18. This is a men's formula and is not intended for women, and not for use during pregnancy or breastfeeding. Anyone with a hormone-sensitive condition, liver or kidney disease, or heart disease, without their doctor's agreement.

Possible side effects

Most people tolerate botanical formulas of this kind. A minority notice mild digestive upset, headache or restlessness in the first week. Stop use and seek advice if you notice a rash, unusual bruising or bleeding, chest discomfort, or an erection lasting more than four hours — that last one is a medical emergency and is a real risk if a product has been adulterated.

These statements have not been evaluated by the Food and Drug Administration. Individual results vary and are not guaranteed. Full safety page →

06

What sits behind the bottle

EreFil made in the USA Made in the USA Manufactured in the United States, so sourcing and quality checks sit under U.S. oversight.
EreFil made in an FDA-registered facility FDA-registered facility Describes the manufacturing site and its standards. The FDA does not approve supplement formulas.
EreFil GMP certified manufacturing GMP certified Good Manufacturing Practice certification covers hygiene, batch records and label accuracy.
EreFil plant-based formula Plant-based, no stimulants Botanical extracts and one trace mineral. No caffeine and nothing habit-forming.

Given the documented adulteration problem in this product category, buying through an official channel rather than a marketplace listing genuinely matters here.

07

How do I take it?

Take two capsules daily with a full glass of water, alongside a meal. Follow the serving size printed on the bottle and do not exceed it.

Take the bottle to a pharmacist before the first capsule if you take any prescription medication. With this particular ingredient list that is not a formality — the nitrate and PDE5 interactions are the ones that matter, and the conversation takes five minutes.

Consistency beats timing. If you miss a day, take the normal serving the next day; there is no need to double up. And the unglamorous things move the needle more than any capsule does here: sleep, weight, alcohol, smoking and cardiovascular exercise all affect both circulation and testosterone.

08

How much does EreFil cost?

Two bottles work out at $79 each plus shipping. The price falls to $69 per bottle on three and $49 per bottle on six, both with free shipping.

EreFil two bottle package, 60-day supply
2 Bottles
60-day supply
$79 /bottle
Total: $158
+ $9.99 shipping
Buy Now Accepted payment cards
Most chosen
EreFil three bottle package, 90-day supply
3 Bottles
90-day supply
$69 /bottle
Total: $207
Free shipping
Buy Now Accepted payment cards
Lowest per bottle
EreFil six bottle package, 180-day supply
6 Bottles
180-day supply
$49 /bottle
Total: $294
Free shipping
Buy Now Accepted payment cards

Pricing and shipping are set on the checkout page and can change with promotions, so confirm the final total on screen before you pay and keep your confirmation email. Because botanicals in this category are taken over weeks rather than days, the two-bottle package is the smallest that allows a fair trial.

09

What can I realistically expect?

What the ingredients are included to support, not promised outcomes. Results vary considerably, and nothing here is a claim to treat any condition.

Daily energy

Tongkat Ali has the most human research here for fatigue-related outcomes, over weeks rather than days.

Physical stamina

Traditional endurance botanicals, best judged alongside actual training rather than instead of it.

Circulation support

Icariin is associated with nitric oxide activity, though most of that evidence is preclinical.

Prostate and urinary comfort

Saw palmetto and nettle are the traditional pairing here. Persistent urinary symptoms need a doctor, not a capsule.

Hormonal support

Boron and Tongkat Ali relate to testosterone metabolism. This is support, not replacement therapy.

A routine you keep

Two capsules with a meal. Simple enough to stay consistent with, which matters more than any single dose.

10

What customers report

EreFil customer
Michael R.
Verified buyer
★★★★★

“Energy through the afternoon is the change I would point to, and it took about six weeks. I also cut back on drinking in the same period, so I would not claim the capsule did all of it.”

EreFil customer
James L.
Verified buyer
★★★★

“I checked it with my pharmacist first because I am on a blood pressure tablet, which I would tell anyone to do with this ingredient list. No stomach trouble taking it with breakfast.”

EreFil customer
Andrew S.
Verified buyer
★★★★

“Gradual rather than dramatic, and I would be wary of anything promising otherwise. Recovery after the gym feels a bit better than it did.”

Customer feedback describes individual experiences. It is not typical, and it is not evidence that the product works — which is why every order carries a 60-day money-back guarantee.

EreFil rated 4.3 out of 5 from 690+ ratings
EreFil 60 day money back guarantee
Two months to decide

60-day money-back guarantee

Botanicals like Tongkat Ali are studied over weeks, so a fortnight would tell you very little. The guarantee runs 60 days from purchase.

If it has not earned a place in your routine, contact customer support within that window to arrange a refund. Keep your order number and confirmation email. Full terms, including who covers return shipping, are set by the retailer and shown at checkout.

See Packages

A supplement alongside a diagnosis, not instead of one

EreFil six bottle package
Lowest per bottle: $49
See All Packages

Seven botanicals, made in a GMP-certified U.S. facility, covered for 60 days — and a doctor's appointment first if erectile difficulty is what brought you here.

11

Common questions

A daily two-capsule dietary supplement for adult men containing Saw Palmetto, Wild Yam, Sarsaparilla, Nettle Leaf, Boron, Tongkat Ali and Horny Goat Weed. It is formulated to support energy, stamina, circulation and everyday male vitality. It is a dietary supplement, not a medicine.

No. It does not diagnose, treat, cure or prevent erectile dysfunction, low testosterone, benign prostatic hyperplasia or any other condition.

More importantly: erectile difficulty is frequently an early warning sign of cardiovascular disease, because the arteries involved are narrower than the ones supplying the heart and show trouble first. That warrants a medical appointment, not a capsule. See Section 01 above.

Check with a doctor or pharmacist first. Horny goat weed acts on the same PDE5 enzyme as sildenafil and tadalafil and may interact with those drugs, with nitrates and with blood pressure medication. Saw palmetto overlaps with finasteride and dutasteride and may affect PSA readings. Nettle has a diuretic effect. Several ingredients affect bleeding risk.

If you take nitrates for angina, do not start this without medical advice.

No. The seven ingredients are named but per-ingredient amounts are not published in the material available for this product. Without amounts you cannot check any ingredient against the doses used in published research, and that is a fair thing to weigh before buying.

No independent clinical trial of the finished formula has been published. The available research concerns individual ingredients at their own doses. That is standard across the supplement category, but it means ingredient research is a signal rather than a guarantee.

There is no reliable timeline and any specific promise should be treated with caution. Tongkat Ali, the ingredient here with the most human research, is studied over weeks. Results vary considerably and some men notice no change at all.

Because this product category has a documented adulteration problem. The FDA has recalled horny goat weed products found to contain undeclared sildenafil, the prescription drug in Viagra. For anyone on nitrates that combination is genuinely dangerous. Marketplace listings are not authorised and are not covered by the guarantee.

Yes, 60 days from purchase. Contact customer support within that window to arrange a return under the refund policy shown at checkout. Keep your order number and confirmation email.

12

More detail on this site

What It IsThe product, who it suits, and who should not take it. How It WorksThree routes, with the evidence weighted honestly. IngredientsAll seven, their evidence and their interaction flags. SafetyNitrates, PSA tests, adulteration and when to see a doctor.
13

Sources and further reading

  1. Mayo Clinic — Erectile dysfunction: A sign of heart disease? mayoclinic.org
  2. Mayo Clinic News Network — Erectile Dysfunction Could Be Early Indicator of Heart Disease. newsnetwork.mayoclinic.org
  3. NCCIH — Saw Palmetto: Usefulness and Safety. nccih.nih.gov/health/saw-palmetto
  4. WebMD — Horny Goat Weed: uses, side effects and interactions. webmd.com
  5. Herba Epimedii and CYP3A4 interaction — case report, National Library of Medicine. ncbi.nlm.nih.gov
  6. NIH Office of Dietary Supplements — Boron Fact Sheet for Health Professionals. ods.od.nih.gov

These references concern individual ingredients and men's health generally. They are listed so you can check the underlying material yourself. Their inclusion does not indicate that any organisation named endorses, recommends or is affiliated with EreFil, and research on an ingredient is not evidence about a finished product.

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