Take the 3-minute Performance Quiz to see your score, your personalized stack, and coaching to turn things around fast. In 7 days, you’ll feel the shift. In 30 days, you’ll know it’s real — or it’s free.
For Men 40+ Who Refuse to Lose a Step
Men’s Performance Supplement Stacks — Personalized for Your Age, Health, and Goals.
I Was Slowing Down. My Wife Noticed Before I Did.
"At 43, I woke up groggy after 8 hours of sleep. I leaned on the counter just to catch my breath. I stared in the mirror and saw a softer version of myself. And the worst part? My wife noticed my drive was gone before I did.
Doctors offered pills. Quick fixes that mask symptoms, but never solve the cause. I refused. I went back to what Dr. James Duke spent his life proving — stacks of herbs that recruit the whole body back into balance.
When I built the right stack and added the right habits, everything changed. My mornings were sharper. My sleep was deeper. My drive came back. My wife noticed the difference again.
Now, over 10,000 men have taken the Quiz, built their stacks, and reclaimed their edge. Duke of Herbs is for men who won’t fade quietly."
Brian Ayers
Founder
Duke of Herbs
Not Just Supplements. A System That Builds You Back Up.
Pills cover up. Stacks and coaching fix what’s really wrong.
— PERFORMANCE QUIZ —
Find out where you are on the men's performance scale in 3 minutes, so you know exactly what to improve.
— GET YOUR STACK —
Personalized to your age + goals.
— LESSONS & COACHING —
Find out how to accelerate the supplements so you do not have this issue again.
— 21 DAY CHECK —
Know how far you have progressed tojust your stack & keep momentum
The Turning Point After 40
At 40, testosterone begins to convert into estrogen through aromatase. That’s when recovery slows, stamina weakens, and aging speeds up. Every month you wait, more ground slips away — ground you don’t get back.
Our stacks slow this erosion, keep T working for you, and support sharper mornings, stronger stamina, and confidence in the bedroom. The sooner you start, the easier it is to stay ahead.
No Cookie-Cutter Bottles.
Your Stack is Built for You.
Every man is different. That’s why stacks are built for your score, your age, and your goals.
Energy Stack (Age 42) → Cordyceps + Rhodiola + Morning Power Ritual.
Sleep Stack (Age 55) → Sleep PM + calming herbs + Night Reset Plan
Drive Stack (Age 60) → Circulation herbs + stress reset + Hormone lesson
From the Father of Herbal Science — to You.
Dr. James A. Duke spent his life proving herbs work. He showed that stacking herbs recruits the whole body into healing.
Drugs treat one thing and cause another. Stacks restore balance. Duke of Herbs continues his mission — natural, tested, personalized to you.
Duke of Herbs carries forward Dr. Duke’s research — turning the wisdom of plants into precise, daily packs. Each capsule is precision-filled, third-party tested, and delivered fresh
Dr. James A. Duke — USDA Ethnobotanist & Herbal Pioneer
Get The Help You Need To Get Better Faster
Stacks start the change. Our Coaching keeps you accountable, so you find out what works, and move up together.
Daily Personalized E-mails
Get the coaching and inspiration you need with personalized emails to keep you on track.
Coaching
Weekly online live lessons, and one-on-one coaching are available to you just for ordering.
Video Lessons
Find out in detail what you need to know to make the right changes fast.
If Your Supplement Stack + System
Doesn’t Work in 30 Days — It’s Free
Your stack is built for you. With coaching and rituals, it supports energy, sleep, stamina, circulation, and confidence.
If you don’t feel the difference in 30 days, you don’t pay.
"Every month you wait, more testosterone
turns into estrogen. That’s energy, drive,
and strength you don’t get back.
Don’t waste another 30 days."
Straight Answers. No Spin.
Do I have to subscribe?
No. If you do you can pause or cancel anytime. No tricks.
What if I don’t feel anything?
30-Day Guarantee. No results, no payment.
Is this medicine?
No. Stacks support energy, sleep, stamina, circulation, and confidence.
What makes this different?
We supplement the supplements with coaching, lessons, and brotherhood — so results come faster and last longer.
Why men over 40?
After 40, testosterone turns into estrogen. Our stacks slow this process and help keep you strong.
How do I know it’s safe?
Made in the U.S., tested, NON-GMO, organic, plant-based.
Why not just take a pill?
Pills mask one problem and cause another. Herbal stacks recruit your whole body to fix the cause