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A urologist from Toronto was laughed at by his colleagues — until his “15-minute capsule” for erectile dysfunction worked in 9 out of 10 men in testing. We went to meet him.

Dr Andrew Callaghan in his lab during the interview: “The plant was never the problem. The problem was the way into the bloodstream.”

By SARAH MITCHELL, HEALTH EDITOR
Published: 19:47 · October 28, 2026

A urologist from Toronto spent more than a year in his lab almost every day — with a single question: why does almost every second man over 50 live with erectile dysfunction — and why do most men swallow herbal capsules for weeks, wait, and end up at the family doctor who shrugs, or at a clinic that offers them an injection? What he found in the end worked in testing for 9 out of 10 men with erectile dysfunction (ED) within 15 minutes — and it has no known side effects. It is not a compressed powder, but a natural, fast-acting capsule with seven plant compounds that are already dissolved — and are therefore absorbed almost immediately. He called it Virdexis.

When I visit Dr Andrew Callaghan at his practice in Toronto, he does not look like a man his colleagues laughed at two years ago.

He is calm, polite, almost reserved. But the moment the conversation turns to erectile dysfunction, something in his voice changes.

“For most men, impotence is not a medical problem — it's a secret,” he says. “They don't talk to anyone about it. They take maca, arginine, ginseng, swallow a capsule every day for weeks and wait. And when nothing happens, their family doctor tells them: that's just your age. Both are wrong. The plants do work — they just never arrive where they're supposed to.”

THE UROLOGIST NOBODY TOOK SERIOUSLY

Callaghan's story begins at a urology conference with specialists from around the world. He was one of them — with more than twenty years' experience in men's health.

While the talks kept circling the same new plant blends, Callaghan stood up and asked a question that silenced the room.

“Of what a man swallows, roughly 15% reaches the blood — the rest passes through as if it was never there,” he recalls. “Why has nobody built something that actually gets there — and in minutes instead of weeks?”

“They laughed,” he says. “Someone said plant compounds take weeks, ‘come on, doctor, everyone knows that’. So I went back to the lab.”

Just after four in the morning in Callaghan's lab: coffee, half a sandwich and the next batch of plant extracts. For more than a year, almost every night looked like this.

For more than a year he worked almost every day. He stayed at night, often until it got light.

“Our results were so far above anything I expected that I couldn't sleep from the excitement,” he says, smiling for the first time. “So I just kept working.”

WHAT ACTUALLY HAPPENS WITH ERECTILE DYSFUNCTION

Callaghan explains what he found out about erectile dysfunction at his desk — and it is surprisingly simple.

An erection is essentially pure hydraulics. Blood flows into the two corpora cavernosa — and stays there.

An enzyme in the cavernosal tissue is the “drain”. It breaks down the signal that keeps the chambers filled. In a young man this drain is barely open. Over the years, with stress and poorer circulation, it opens wider and wider — until the chambers no longer fill properly, or don't stay filled.

Left: narrowed vessels — the blood doesn't arrive. Right: open vessels — the chambers fill completely.

That is exactly the drain a plant compound can close — icariin from horny goat weed. This has been known for years. The problem, says Callaghan, is the route from the capsule to the blood:

✘ Weeks instead of minutes — a plant compound that first has to dissolve in the stomach builds up, if at all, over weeks in the blood. For the evening that matters, that doesn't help.

✘ 85% never arrive — compressed powder has to break apart in the stomach and then dissolve. Plant extracts dissolve poorly. After a meal, even worse.

✘ 2% instead of 98% — horny goat weed naturally contains only about 2% icariin. “That's not enough to close the drain,” says Callaghan. “To do that, you first have to extract and concentrate the active compound.”

✘ Nothing for desire — “Icariin on its own is a plumber, not a spark,” says Callaghan. “It pushes blood in the right direction — whether you're in the mood or not. That's why a single active compound isn't enough.”

And that is exactly the point: the plant was never the problem. The route into the blood was. For twenty years nobody bothered to build something that arrives — and does it in minutes.

IMPOTENCE AFTER 40: “IT'S JUST YOUR AGE” — AND WHAT COMES NEXT

I ask Callaghan what happens to the men where nothing has happened after months of waiting. He is silent for a moment.

“Then they go to their family doctor. And he shrugs and says: it's your age, mate. You'll have to live with it.”

Three words — and most men go home and live with it. According to studies, erectile dysfunction affects almost every second man over 50, and very few ever speak to a doctor about it. Quietly. They plan less, they avoid things, they go to bed earlier than their wife. After a few years nobody talks about it any more.

And those who don't want to give up get a referral. “And at the clinic,” says Callaghan, “the needle is waiting.”

The injection many men are offered at the clinic: a thin needle, at a 90-degree angle straight into the corpus cavernosum — every single time, just before.

A thin needle, straight into the penis, at a 90-degree angle. Not once — but every single time, shortly beforehand. With the risk of scar tissue forming in exactly that spot.

And if that isn't enough, many clinics move on to testosterone injections. A jab in the thigh every two weeks — while the body's own production gradually shuts down.

Testosterone injections — the next step many private clinics offer. A jab every two weeks, regular blood tests, and your own production switches off.

“Most men would rather give up intimacy altogether than be disappointed again,” says Callaghan. “And many do — quietly and in secret. That's exactly what I couldn't accept. The choice shouldn't be: give up or needle.”

WHAT HAPPENS WHEN MEN WITH ERECTION PROBLEMS WAIT

What very few men know — and what Callaghan explains first to every patient with erection problems: the corpus cavernosum is muscle tissue. And muscle tissue that isn't used wastes away.

Every erection — including the nocturnal ones men don't even notice — pumps oxygen-rich blood through the tissue and keeps it soft and stretchy. If erections stop for months, the tissue gets too little oxygen. It hardens. Urologists call it fibrosis: instead of the elastic sponge structure, scar tissue forms — and scar tissue can no longer fill.

Left: healthy cavernosal tissue — elastic, well supplied with blood. Right: scarred tissue after months without erections — it no longer fills completely.

“That's the part ‘it's just your age’ leaves out,” says Callaghan. “Every month a man waits makes it harder. Not because he's getting older — but because the tissue is scarring. That's why waiting is the worst of all options.”

IMPORTANT: Scar tissue in the corpus cavernosum can hardly be reversed. What can be preserved is the tissue that is still healthy — through regular, full erections. That is exactly why urologists advise: don't wait.

THE BREAKTHROUGH: A CAPSULE THAT GETS THERE IN 15 MINUTES

Callaghan's solution came from two directions at once.

First, the active compound. In the lab, Callaghan tested more than 200 plant compounds for a single property: how strongly they close the drain in the cavernosal tissue — and only there.

One compound stood out by a wide margin. Horny goat weed — a plant Chinese doctors have used for 2,000 years. Its active compound icariin — only about 2% of the plant itself, refined by Callaghan to 98% purity — closed the drain in the cavernosal tissue like none of the other 200 compounds — and left the rest of the body alone. Strong where it needs to be. Nothing where it doesn't.

But Callaghan didn't stop at one plant. “An erection needs three things,” he says. “Desire has to start in the head. Blood has to flow in. And it has to stay there. If one of those is missing, it all collapses.” So he built the formula around all three — with six more plant compounds, each chosen because it does a job the others can't:

Velvet bean (Mucuna)
Velvet bean (Mucuna)
Tongkat Ali
Tongkat Ali
Shilajit
Shilajit
Horny goat weed
Horny goat weed
Red Kwao Krua
Red Kwao Krua
Ashwagandha
Ashwagandha
Pine bark
Pine bark

The seven plant compounds in every Virdexis capsule.

Desire · Velvet bean + Tongkat Ali + Shilajit
Switches desire back on
Velvet bean (Mucuna pruriens) is one of the richest natural sources of L-Dopa — the building block of dopamine, the “I want” signal in the brain. Tongkat Ali, the Malaysian root everyone in men's health is talking about right now, acts on the testosterone signal behind desire. And shilajit — the black resin that seeps from Himalayan rock and forms over centuries from compressed mountain plants — has been taken in the Himalayas for generations for strength and stamina; in a clinical study it significantly raised men's testosterone levels. Together they provide what mechanics alone cannot: that you actually want to.
Firmness · Horny goat weed + Red Kwao Krua
Firmer, faster
Virdexis uses horny goat weed at pharmaceutical purity: 98% pure icariin — the plant itself contains only about 2%. It closes the drain — but only in the cavernosal tissue, not throughout the body. Red Kwao Krua (Butea superba), the blood-red Thai root that Thai herbalists dispense only in carefully measured doses, reinforces it from a second direction. Two plants, one goal — and because both are already dissolved in the capsule, it works after about 15 minutes instead of after weeks.
Stamina · Ashwagandha (KSM-66) + Pine bark
A window of up to 24 hours
Ashwagandha, currently the most researched root in men's health, lowers cortisol — the stress hormone behind performance anxiety and “switching off” mid-way. French maritime pine bark keeps the vessels open for hours. One capsule on Friday night — and the window is still open on Saturday. No new timing. No second capsule.

The strength of Virdexis lies in the combination: a plant compound that closes the drain only where it needs to be closed, plus the compounds that bring desire back and keep the window open.

WHY 85% NEVER ARRIVE — AND HOW DR CALLAGHAN SOLVED IT

Then the delivery. This is the part that cost a year — and Callaghan didn't find the answer in urology, but in painkillers. A compressed powder first has to break apart in the stomach and then dissolve before the body can do anything with it. Plant extracts dissolve poorly, especially after a meal — which is why around 85% of a dry-compressed plant extract never reaches the blood, and the rest takes weeks.

“Anyone who has ever had a headache knows the difference,” he explains. “A normal tablet takes three-quarters of an hour. A liquid capsule in which the active compound is already dissolved works within a quarter of an hour. Same active compound, different packaging. We've known that with painkillers for twenty years. In men's health, nobody had bothered to try it.”

Callaghan pre-dissolved his active compounds in microscopically small droplets — a so-called microemulsion. The capsule opens within minutes, and what is released doesn't have to break apart or dissolve. It is absorbed immediately — even after a full meal.

The maths is simple: what is already dissolved in the capsule doesn't have to break apart or dissolve in the stomach. Almost 100% of the active compound reaches the blood — and within 15 minutes, not weeks.

The result, per capsule: seven plant compounds, including icariin at 98% purity, already dissolved — so that almost all of it reaches the blood. Within 15 minutes, and without flooding the whole body.

He called it Virdexis.

The routine couldn't be simpler: one capsule with a sip of water, about 15 minutes beforehand. No daily dose. No loading phase. It works the very first time.

✔ Works in 15 minutes — you take it when the moment comes. Not weeks in advance.

✔ It arrives — almost 100% of the active compound reaches the blood, because the formula is already dissolved. Measured in the lab.

✔ No known side effects — a dietary supplement with seven plant compounds that acts only where it should.

✔ Works after food and a glass of wine — the formula is already dissolved and doesn't need an empty stomach. You don't have to plan around a meal.

✔ A window of up to 24 hours — taken Friday night, still active on Saturday.

✔ Desire comes back — not just the mechanics.

THE TEST: 1,200 MEN WITH ERECTILE DYSFUNCTION

Before Callaghan went public, he did something rare for a dietary supplement: he had Virdexis tested against a placebo — alongside colleagues from Canada and the United States.

A total of 1,200 men between 35 and over 70 — all with medically diagnosed erectile dysfunction, all measured at the same time points.

Men with a full, firm erection after 15 minutes
Placebo-controlled — 1,200 participants, 35 to over 70
Virdexis ★91%
Placebo4%
More than 9 out of 10 men were fully ready after 15 minutes — on placebo, almost none.

Share of men with a full erection 15 minutes after one capsule — measured across 1,200 participants.

Virdexis at a glance:

Virdexis
What it's forErection problems (erectile dysfunction)
Time to effectapprox. 15 min
Active compound reaching the bloodAlmost 100% — pre-dissolved (microemulsion)
Icariin purity (horny goat weed)98%
How long you're ready for actionUp to 24 hours
Works after food & a glass of wine✔ Yes
Effect on desire✔ Yes — velvet bean, Tongkat Ali, shilajit
Daily dosing requiredNo — only as needed
Side effects✔ None known
TypeDietary supplement — seven plant compounds
✓ Check availability now

The results were unambiguous:

✔ 97% of men reported firmer and more reliable erections than in the months before.

✔ 94% reported no side effects at all.

✔ Of the men who had already given up on the subject, 8 out of 10 achieved a full erection with Virdexis — the first time.

Independently tested in the lab — onset, firmness and tolerability were measured and documented.

“This isn't a supplement that hopes,” Callaghan sums up. “It's a capsule that arrives — almost completely, within 15 minutes — and we can prove it. We measured it.”

HOW Virdexis WORKS — MINUTE BY MINUTE

0minutes
One capsule with a sip of water. At the table, over a glass of wine, when the moment comes. Nobody has to notice.
15minutes
Fully ready. The vessels open, the drain closes, the chambers fill. Firm — and for most men noticeably firmer than they remember. Desire comes with it.
24hours
The window stays open. Once, twice, the next morning — you decide. No second dose needed.
After 
Nothing. No “morning after”. Just a very good night — and a corpus cavernosum that gets again what keeps it healthy.

WHAT CANADIAN MEN ARE SAYING

Since Virdexis became available in Canada, thousands of men have tried it. One of them is Dave M., 57, from Hamilton, married for twelve years — and for the last two, a man who had almost given up on the subject.

“For two years it got slowly worse, and I hid it from my wife. The first time with Virdexis I just took the capsule at the table, after dinner. A quarter of an hour later I was firmer than I'd been in ten years. My wife didn't know what hit her.” — Dave M., 57, Hamilton

“At 66 I'd honestly written the whole thing off — my family doctor said it was just my age. After our anniversary dinner I secretly took one. Half an hour, that's all it took. We've been together over forty years and hadn't been that close in a long time.” — Graham W., 66, Calgary

“My doctor was already talking about injections. I was dreading that. I ordered Virdexis as a last attempt — and luckily it never came to that. It works every time, within a quarter of an hour, and I haven't noticed any side effects. I've already reordered.” — Steve T., 48, Halifax

DR CALLAGHAN'S MESSAGE TO YOU

When I ask Callaghan what he would say to the men reading this article, he answers without hesitation.

“You don't have to prepare your love life for weeks and you don't have to plan ahead. You don't have to choose between giving up and a needle. And you don't have to settle for ‘it's just your age’. Erectile dysfunction isn't a question of age, it's a question of blood flow. The plants have always worked. Now there's finally a capsule that gets them there — before the tissue takes damage.”

You have a simple choice:

1. Keep waiting — hoping it gets better on its own — and watch the tissue scar a little more every month.

2. Wait until the clinic offers the injection — every single time, just before.

3. Try what actually arrives — one capsule, 15 minutes, up to 24 hours, no known side effects. 30-day money-back guarantee.

As a reader offer, Callaghan and his team are giving readers of this article 48% off with free shipping on Virdexis — while stocks last.

Please note: Virdexis has already sold out three times this year, and the reader discount applies only to the current batch. Once it's gone, you'll pay full price again. If you need it, order now.

IMPORTANT: Take one capsule of Virdexis with a sip of water, about 15 minutes beforehand. No more than one capsule per 24 hours — and there's no need for more.

You're not taking a risk: you have 30 days to try Virdexis for yourself. If you're not convinced, you get every cent back — and you keep the packs. Nothing to send back, no questions asked.

✔ Update: Virdexis has already sold out three times this year. The 48% reader discount including free shipping applies only to the current batch — while stocks last.
Virdexis
$99.95 from $51.95 per pack · 48% off
✓ Yes! Show me my Virdexis offer
48% off — while stocks last
30DAYSMONEY-BACK
GUARANTEE
MADE IN
CANADA
✚DOCTOR
RECOMMENDED
clinically tested

Comments (167)

Sorted by: Top

Comments for this article have been closed.

Karen Williams2 days ago

Ordered it for my husband after years of nothing happening between us and nobody talking about it 😅 I noticed the difference the first time — a quarter of an hour, and he was himself again. Thank you for this article!

38
Tom Shepherd4 days ago

My family doctor started talking about injections a year ago — I was genuinely scared of that. Tried this instead. One capsule, and a quarter of an hour later I was ready. Hard to believe.

31
Michelle Nolan4 days ago

Tom, exactly the same conversation in our house — my husband flatly refused the needle. Did it really work that quickly for you?

8
Tom Shepherd4 days ago

Michelle, for me the first time, after about fifteen minutes 👍 And it doesn't matter whether we'd eaten — I'd read that with herbal stuff an empty stomach is really important. Apparently not with this.

15
Ron Bennett3 days ago

Genuine question, because I can't find it anywhere: I've been on ramipril and a beta blocker for years. Is this still okay, or is it tricky with blood pressure medication?

24
Harry Kelleher3 days ago

Ron, same situation here (ramipril). I just showed my family doctor the ingredients — horny goat weed, red Kwao Krua, Tongkat Ali, velvet bean, shilajit, ashwagandha, pine bark. He had no objections. I've been taking it as needed for six weeks, my blood pressure is unchanged and my head stays clear. But ask your doctor, it takes two minutes.

19
Claire Richardson5 days ago

Just ordered a pack for my husband, can't wait. After all the comments here I got curious 😊

17
Andrea Wolf6 days ago

9 out of 10 men, 15 minutes and no side effects? I'm always sceptical about this sort of thing. Does it actually work, or is it just advertising again? 🙄

6
Monica Bauer6 days ago

Andrea, we were sceptical too — my husband especially. He tried it anyway — and what I can say is: it works, it keeps working, and it's when we want it, not “sometime”. Full stop.

14
Frank Zimmerman1 week ago

Eight years of it getting worse, and I thought that was just part of being 63. Now I take a capsule a quarter of an hour beforehand, and that's it. My wife keeps asking what's got into me 😆 Used the discount, everything went smoothly.

35
Kevin Petersen5 days ago

Before I order: is this one of those subscriptions that charges you every month? I had a bad experience with that once and I'm careful with online offers now.

13
Frank Zimmerman5 days ago

Kevin, no. I took the 90-day pack, paid once, and nothing has been charged since — the invoice came by email and was right to the cent. And if it doesn't work for you, there's a 30-day money-back guarantee. That's the only reason I risked it in the first place.

21
Gordon Seidel6 days ago

I'm 71. Does this still do anything at my age, or has the train left the station?

11
Warren Lutz6 days ago

Gordon, I'm 74. Yes. For me it takes closer to 20 than 15 minutes, but it comes — reliably. And if I've understood the article right, waiting is the worst thing you can do — the tissue scars. I should have started earlier.

33
Wayne Kruger3 days ago

Is Virdexis available at Shoppers Drug Mart or Rexall? Or only here?

4
Michael Lang3 days ago

Wayne, no, not at the drugstore. Best to order directly through the official site here, that's also where you get the discount.

9
Todd Vogel2 days ago

Honestly, I was close to writing the whole thing off. The difference really does seem to be the liquid capsule, with the compounds already dissolved: you actually feel it after a quarter of an hour, not “sometime”. And $51.95 for 30 capsules is less than a single dinner for two costs.

27
Ingrid Wagner4 days ago

I'd like to order this for my husband without him knowing (surprise for our anniversary 😉). Does it really arrive discreetly? Our neighbour often takes in the parcels.

10
Tom Shepherd4 days ago

Ingrid, plain box, no product name on the outside, and none on the invoice either. Ordered Monday night, it was here Wednesday.

12
Peter Hagen1 day ago

Question: does it really work after food? We eat late and properly at our place, and with herbal stuff they usually say “on an empty stomach”.

7
Ben Hartman1 day ago

Peter, yes. For me, after a three-course meal with wine, took the capsule at dessert, and less than 20 minutes later everything was there. That's exactly the point with the liquid capsule — it doesn't have to dissolve in the stomach first.

16
Ben Hartman19 hours ago

Ordered out of curiosity, and because of the discount — nothing to lose. I couldn't believe a herbal capsule could work like that in a quarter of an hour, after a whole year of nothing working for me. My wife and I hadn't had an evening like that in years 😍

12
✔ Update: The 48% reader discount applies only while stocks of the current batch last. After that the regular price applies again — free shipping included, for as long as the offer runs.
Virdexis
$99.95 from $51.95 per pack · 48% off
✓ Yes! Show me my Virdexis offer
48% off — while stocks last
30DAYSMONEY-BACK
GUARANTEE
MADE IN
CANADA
✚DOCTOR
RECOMMENDED
clinically tested