"Most boosters stack 7–11 ingredients at half doses so none of them can do much. We put one in at a full dose, so you know exactly what you're testing."
For Men Who Miss the Man They Used to Be.
Our innovative formula supports your body's natural testosterone production — No added hormones or needles.
Free US shipping over $30 · discreet packaging
One box = 16 capsules = one 4-week course. Men 18+ only. *These statements have not been evaluated by the FDA.
Every box includes
500 mgFerula root
1 plantFerula hermonis
5 mgBlack pepper
16 capsulesRoot powder
4 weeksOne course
Test planBefore & after6 PMNothing left
The mirrorHead 29, body 40
The driveFlat, not broken
That's the man Ferula is built for. It supports healthy testosterone levels.* It isn't a stimulant, a hormone or a quick fix: it's a measured 4-week course.
Step 1The signal
Step 2The brake
Step 3Your own testosterone
Proposed mechanism from published research. Not fully established.
Your doctor says you're "normal"?
This is you right now
Hits snooze twice. Needs coffee before he can think.
Up before the alarm and ready to go.
Same weights since spring, however hard he pushes.
Adds weight to the bar most weeks.
Sore for days. Dreads the next session.
Sore for a day, then ready to go again.
Hits a wall after lunch.
Still sharp at 3pm.
On the couch by 8. "Tomorrow, buddy."
Still has something left for the kids.
The man on the left has less than a third of the testosterone of the man on the right. Both get told the same word.
So "normal" can't tell you if you've dropped. A blood test before and after can, which is why every Ferula course starts and ends with one.
Total testosterone in nanograms per decilitre (ng/dL). Normal range 264 to 916: Travison et al., Journal of Clinical Endocrinology & Metabolism, 2017. The photos and days are illustrations of how men at each end often describe it, not customers or results. Sleep, stress and diet matter too.
Video reviews from HisLabs customers
Individual results vary.
WHY MEN ARE CHOOSING HISLABS FERULA.
I've spent hundreds on testosterone boosters over the years and most were just expensive bottles of nothing. What caught my attention with Ferula was the actual research behind the ingredient. I like knowing exactly what I'm taking instead of swallowing a dozen mystery ingredients.
I'm 34 and got tired of buying whatever supplement some fitness influencer was pushing. Ferula caught my eye because it's a single botanical with a published study behind it. The straightforward formula and short-course approach made a lot more sense to me.
I've been looking into TRT but wanted to understand all my options before making any decisions. I came across HisLabs while researching Ferula. I liked the transparency about the ingredient and the fact that they encourage men to understand their bloodwork.
At 42, I started paying more attention to my energy, workouts, and testosterone levels. Most supplement brands make ridiculous promises. I appreciated that HisLabs actually explains the study, the dosage, and what the research does and doesn't show.
I'm naturally skeptical about supplements. When I saw the numbers from the 2007 Ferula study, I went and looked into it myself. It's a small study, but I appreciated that HisLabs gave me something specific to investigate instead of just making big promises.
I'm 39, work long hours, have two kids, and still try to make time for the gym. I'm interested in supporting my testosterone levels as I get older, but I don't want another supplement with a hundred exaggerated claims. HisLabs feels like a more straightforward approach.
Individual results vary.
What's inside
Two things on the label, shown as they really are. Every milligram is printed on the box.
500 mg per capsuleZallouh · Levantine root
A wild plant from the rocky slopes around Mount Hermon. Its dried root, known locally as zallouh, has been used in Lebanon and Syria for generations as a men's tonic. It's the only active ingredient in the box, at the dose used in the one human trial.
Where it grows · what we useWild on high, rocky ground around Mount Hermon on the Lebanon–Syria border. We use only the dried root, ground to a fine powder.
5 mgPiper nigrum
A small pinch of piperine, the compound that gives pepper its bite, added to support absorption. That's all it does here.
Where it growsA climbing vine of tropical South India; the green berries are dried in the sun until they turn black.
*These statements have not been evaluated by the Food and Drug Administration.
Average total testosterone, before and after 8 weeks
Placebo (dummy pill)Dummy pill: a look-alike capsule with no Ferula in it. It shows what changes on its own over 8 weeks.
+18% (not significant) average total testosterone, ng/dL
500 mg a day (our dose)Our dose: 500 mg of Ferula a day for 8 weeks, the same amount as one HisLabs capsule.
+47% average total testosterone, ng/dL
1,000 mg a day (double dose)Double dose: 1,000 mg a day. The biggest rise in the trial, but animal studies suggest more isn't better long-term, so we stick to 500 mg.
+146% average total testosterone, ng/dL
Hedaya M. et al., 2007, Tanta University, Egypt. In a small 8-week study of 60 men aged 40–55 with type 2 diabetes, average testosterone levels increased from 274 to 404 ng/dL (+47%) in the 500 mg Ferula group, compared with 196 to 231 ng/dL (+18%) in the placebo group.
Animal
In rats, a single dose raised testosterone and mating behaviour. Ten days of daily dosing lowered it. Hence the pulsed course with a 30-day rest.
Zanoli et al., 2003 (PubMed 14671666)
Animal
Daily dosing for 6+ weeks in rodents lowered testosterone and harmed fertility. Don't take it daily long-term. Don't exceed the course.
Rodent chronic-dosing studies, 2002–2014
Hedaya 2007, Zanoli 2005 and Macrì 2024 study Ferula. Bello 2018 and Morales 1998 are background reading on how testosterone is carried in the blood and on hormone levels in older men; they did not test Ferula.
Looking for the closest thing to TRT without starting TRT?
Jason M. — age 41, USA
"By the time I got home from work, I had nothing left. My kids wanted to play, my wife wanted to spend time together, and all I wanted was the couch. I started looking into testosterone support because I missed feeling like myself. That's what led me to HisLabs FERULA."
Michael R. — age 31, USA
"I'm only 31, but my energy, sex drive, and gym performance were already slipping. My confidence in the bedroom had taken a hit, and I felt way too young to be dealing with that. I'd tried the usual supplements without much luck. Then I discovered hislabs ferula and its four week testosterones course. I feel like i'm early 20s again and I feel great."
Daniel T. — age 43, UK
"The hardest part wasn't getting older. It was feeling like I'd lost some of the drive and confidence I used to have, especially with my wife. I wasn't ready to start TRT, but I wanted to understand my options. Discovering the research behind Ferula gave me something new to investigate."
Chris B. — age 38, USA
"I'd spent hundreds on testosterone boosters that promised everything and proved nothing. What interested me about HisLabs was the focus on bloodwork. Check your levels before, follow the course, and check again afterward. That's the kind of approach I was looking for instead of another miracle claim."
 |
Testosterone therapy (TRT) | Generic testosterone boosters | |
|---|---|---|---|
| Approach | Natural support | Hormone replacement | Natural support |
| Convenience | 16 capsules per course | Needles or gels | Daily, forever |
| Ingredients | 1, fully dosed | Prescription | ? |
| Your own production | Works with it | Can shut it down | ? |
| Monitoring | Test before & after | Requires bloodwork | × |
| Label | ✓ | Prescribed | ? |
Every order
Swipe through what happens at each stage, from the first blood test to the last.
Step 1 of 5Day 0
Ask for total testosterone, free testosterone and sex hormone-binding globulin (SHBG). Go fasted, between 7 and 10am. This is your starting number.
Next: Week 1 →Step 2 of 5Week 1
Keep eating, sleeping and training the way you normally do, so the test at the end is fair.
Next: Weeks 2–4 →Step 3 of 5Weeks 2–4
Nothing on the other days, so there are always at least 48 hours between capsules.
Next: Weeks 5–8 →Step 4 of 5Weeks 5–8
In animal studies, weeks of daily dosing lowered testosterone. So it's a short burst, then nothing, and day 58 shows your own body's number.
Next: Day 58 →Step 5 of 5Day 58
Same tests, same lab, same time of day as day 0. Not higher? Email us both reports within 90 days of delivery for a full refund.
16 capsules in total = 1 course. Start on a Monday and the days line up.
Your Testosterone Goes Up, or Your Money Back. Get your testosterone tested before starting HisLabs FERULA. Complete your 4-week course, take your 30-day break, and test again around Day 58. **If your testosterone hasn't increased, we'll refund 100% of your order — even if you've opened the boxes.** Simply email us both lab reports within 90 days of delivery. Full terms apply; see our Refund Policy.
Try it nowOne Powerful Root. No Mystery Blends.
500 mg of Ferula hermonis root extract per capsule, plus 5 mg black pepper extract to support absorption. No proprietary blends or hidden ingredients.
For Men Who Want Their Drive Back.
Designed for men aged 30+ exploring natural testosterone support, especially those frustrated by low energy, stalled gym progress, reduced motivation, or declining libido — and looking for a non-prescription option before considering TRT.
Daily for the first 7 days, then three times a week for weeks 2–4, at least 48 hours apart. Then rest 30 days. Do not exceed the course.
Yes — HisLabs FERULA is designed to be cycled, rather than taken continuously.
Your current product schedule is:
Hormone-Free Formula. Designed to Support Natural Testosterone Levels.
