Rated 4.9

200K+ BOTTLES SOLD

Old School Mass Activator - DIOBOL

C.T. Fletcher
C.T. Fletcher

Stop buying fairy dust from GNC. I've seen 50-year-old men on this look better than guys half their age. No needles. No BS. Just results. I put my name on NOTHING I don't believe in. Period. ISYMFS.

  • Old‑School Mass†
  • Turns Up Protein Synthesis†
  • Slows Muscle Breakdown†
  • Bigger, Longer Pumps†
  • More Weight on the Bar†
  • No PCT Needed†
Sold outDIOBOL is sold out for now.

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DIOBOL · Size · Strength · No PCT

You Want Old-School Mass. Without a PCT to Plan.


Fuller, harder muscle that fills out your shirts.†

Each 2 mL holds 150 mg of 6-Keto-Diosgenin and 150 mg of 5-Hydroxy-7-Methoxyflavone. Two bottles are built to push size and strength, with no PCT.†

Here is why ↓

30-day
guarantee

No
PCT

Brand partners

Lee Priest
& CT Fletcher

Sold out right now: DIOBOL is out of stock. MYO-11 and Uronabol need no PCT either, and both are in stock. See the kit below

Verified DIOBOL buyers

You should be skeptical.

You have bought “natural” mass builders that did nothing. Read what three verified DIOBOL buyers wrote.

Scott T.

I have seen a big impact with the first week of use better pump able to push more weight. Can’t be happier with what the product is doing for me!!! also seeing visible results quickly!!!!

Photo from verified buyer Scott T.

Sep 2026

Jason C.

Got in on the batch and man it is killer. The pumps have increased the weights have increased and the mass unbelievable.

Sep 2026

Jose F.

I have been using these products for about 3 months. And yes, this is the result. Before it just didn't increase but now I'm growing, thank you.

Photo from verified buyer Jose F.

Oct 2026

Photos come from verified buyers. Some reviewers got a discount for adding a photo.

See Price & Options ↑

30-day first-bottle guarantee · No needles · 4.2★ from 35+ reviews

6 years in business

Brand partners

Two legends back Vintage Muscle.

Lee Priest and CT Fletcher are paid brand partners of Vintage Muscle. Here is what each one says about the brand.

Lee Priest

Lee Priest

IFBB pro at 20 · 5th at the 1997 Mr. Olympia · 2006 Ironman Pro winner

On Vintage Muscle

“I F@#$%&! LOVE THIS STUFF”

CT Fletcher

CT Fletcher

3-time World Bench Press Champion · 3-time World Strict Curl Champion

On Vintage Muscle

“I put my name on NOTHING I don't believe in. Period.”

The problem

Three walls stand between your work and old-school mass.

“Just grew tired of not being a better version of me physically. Getting older and can feel it. Miss how fast I showed results and recovered back in mid 20's to mid 30's”

From our new-customer survey, Sep 2026

You train hard and eat to grow, and your effort is fine. Three walls still stop the next step.

01

The stall

You have trained for years. The bar and the mirror stopped moving.

02

The shelf stuff

You tried the herb blends from the store. The mirror showed nothing new.

03

The PCT bill

A hormonal cycle comes with PCT and weeks off. You want more size without that bill.

DIOBOL is built to take on all three walls at once.†

DIOBOL bottle in front of a stone statue, with the words Old School Mass Is Back

What is inside

Two actives. 150 mg each.

Each 2 mL serving holds two actives, and the label lists both doses. Here is each one and its job.†

DIOBOL bottle on an anvil with sparks, with the words You Asked for Stronger

150 mg per serving

6-Keto-Diosgenin

Made from diosgenin, a plant compound found in wild yam

It is formulated to target strength and size in the muscle you train.†

150 mg per serving

5-Hydroxy-7-Methoxyflavone

C₁₆H₁₂O₄ · a flavone found in black ginger

It is formulated to target a fuller, harder look.†

The timeline

What 8 weeks of DIOBOL feels like.

One bottle lasts 4 weeks, so a full cycle takes 2 bottles. You feel it first and see it later. Results vary with your training and diet.†

Day 1

Start

Take your mirror photos and log your lifts. Then take your first 2 mL.

Weeks 2–3

Feel it

Buyers write about fuller pumps and stronger sets first.†

Weeks 6–8

See it

Judge the mirror after bottle 2. Strength shows before size.†

  1. Weeks1–4

    Bottle 1: the pump and the push

    Bottle 1 is built for a fuller pump and stronger sets first.†

    Delbert M.

    Hi ,I'm six days in and I'm starting to notice muscles are getting fuller and staying pumped longer!

    Sep 2026

  2. Weeks5–8

    Bottle 2: size you can see

    Same dose, same training. Bottle 2 is built to fill out your shirts across the chest and arms.†

    Scot H.

    Great product! Been using it for several months and the gains have been noticeable.

    Oct 2026

  3. Weeks9–12

    Bottle 3: if you want it

    DIOBOL needs no PCT. You can run it for as long as 12 weeks.

The difference

Creatine fuels your training. DIOBOL is built to push it further.†

Creatine and protein help you train hard, and that job matters. Pushing past a plateau is a separate job.

Your stack alone

  • Fuels your training and recovery
  • Lifts can stall for months
  • Arms can look the same for years

Your stack + DIOBOL

  • Built for strength on the bar†
  • Formulated for a fuller, harder look†
  • Non-hormonal, so it needs no PCT

Want more? Pair DIOBOL with MYO-11 or Uronabol. Neither one needs PCT.

The fit

Who it is for (and who it is not).

This is for you if:

  • You have 2 or more years of steady training, and you eat to grow.
  • You ran MYO-11 or Uronabol and want the advanced option.
  • You want more size without needles, a prescription, or PCT.
  • You run hormonal cycles and want a non-hormonal add-on.
  • You are coming back after a break, and your body drifted while work and family came first.
  • You are 40, 50, or 60, and you are not done getting stronger.

Leland W.

I can feel the difference in my muscle already. I'm 75 years old and this makes big difference. I'm looking forward to working out much better. All I can say is, this is great.

Oct 2026

This is not for you if:

  • This is your first product like this. Start with Uronabol or MYO-11, then come back.
  • You will not eat enough to grow. No supplement replaces a missing meal.
  • You want a stimulant buzz you feel in 20 minutes. DIOBOL does not work that way.
  • You will stack it with a hormonal product and skip that product’s PCT. DIOBOL needs none, but the other product still does.
  • You compete in a drug-tested sport, and your sport’s testing body has not cleared the label.
  • You are under 21, or you have a liver, kidney, or heart condition.

What to expect: DIOBOL is non-hormonal, so it needs no PCT. It tastes strong, so keep a chaser ready. If you feel unwell, stop and talk to your doctor.

Start My 8-Week Cycle ↑

AutoShip: $65.99 a bottle, every 4 or 8 weeks. It renews until you change or cancel it.

The proof

“Does it work?”

68%

of returning customers surveyed said they reordered because the product worked.

Self-reported. Vintage Muscle post-purchase survey of returning customers, all products. 1,597 answers, Jun 27 – Oct 24, 2026.

Verified DIOBOL buyers, in their own words.

Photo from verified buyer J P.

J P.

59 in January I’ve used their products for six years. Every one of them is as advertised with diet and proper workout. No pins required…. And call me crazy but I like the taste.

Oct 2026

Photo from verified buyer Kareem K.

Kareem K.

Putting on the muscle

Aug 2026

More verified buyers

Brian M.

Definitely working. Notice an increase in strength for sure a couple weeks in. Gotta get diet more on point but hey it is bulking season. So far two thumbs up Besides the taste that is

Sep 2026

David L.

I feel good energy throughout my workouts and strength is improving and/or at least maintained while I’m in a calorie deficit. Very positive signs.

Aug 2026

Verified buyer photos and words. Some reviewers got a discount for adding a photo. Results vary.†

The third door

No needles. No prescription.

Plenty of men look at a clinic or the gray market first. Compare the facts before you pick a door.

TRT clinic

Gray marketGear, SARMs, peptides

DIOBOL

Needles

Usually shots

Often

None. 2 mL by mouth.

Prescription

Required, plus bloodwork

None. No one checks the source.

Not needed

After the cycle

Ongoing, with refills

You plan it yourself

Non-hormonal. No PCT.

What is inside

Pharmacy grade

Hard to verify

Two actives, both doses on the label

Cost

Clinic visits, labs, and refills

Cash to a source that can vanish

About $2.36 a day on AutoShip

Try DIOBOL before you commit to TRT. This table compares features, not results. DIOBOL is a dietary supplement, not a drug.

The protocol

One cycle, start to finish.

2 mL

a day

4 wks

per bottle

2

bottles per cycle

Take 2 mL once a day, in the morning or before you train. Keep taking your creatine and protein.

Weeks 1–4

Bottle 1

Take 2 mL a day. Train hard and eat to grow.

Weeks 5–8

Bottle 2

Finish the cycle with the same dose and the same training.

Week 9 on

Your call

DIOBOL needs no PCT. Run it for as long as 12 weeks, then take a short break.

DIOBOL is non-hormonal, so it needs no PCT. If you stack it with a hormonal product, follow that product’s PCT plan.

Running a hormonal cycle?

On cycle

Stack it

Run DIOBOL with your hormonal product. It adds no PCT weeks of its own.

During PCT

Keep it running

It is non-hormonal, so you can run it next to Arimidione through your 4 weeks of PCT.

Weeks off

Train hard

Run it solo, or pair it with MYO-11 or Uronabol. None of them needs PCT.

Arimidione and Cycle Support are built to support natural testosterone production in the 4 weeks after a hormonal cycle.†

J P.

58 i have used the whole line . All awesome and this is no exception… massive pump and they stay seems like ALLDAY! Got it on subscribe!

Oct 2026

In stock now · No PCT

Density · In stock

In this kit

One 8-week cycle of both. It is built for strength and a dense, full look.† Both are non-hormonal, so it needs no PCT.

$351.96 $176.00 with B2G2

About $3.14 a day for 8 weeks

Add the Density kit

DIOBOL kits come back when it is back in stock. The Density kit runs MYO-11 and Uronabol for one 8-week cycle. The button adds it to your cart and applies code B2G2, 50% off 4 or more bottles. Kits are one-time orders.

Not sure what to pick? Take the 60-second quiz

The 8-week mirror challenge

Three photos. Let the mirror keep score.

Your memory of day one fades fast. Take the same three shots at the start, the middle, and the end of your cycle.

Day 1

Before

Shoot your front, side, and back. Use the same mirror, light, and time of day.

Week 4

Bottle 1 done

Take the same three shots in the same spot.

Week 8

Bottle 2 done

Take them one last time. Put all nine photos side by side.

Share them: Post your photos in the Vintage Muscle group on Facebook. You can also keep them on your phone. The photos are for you first. Join the group

You did the work. Now give it 8 weeks.

You already put in the years. Every week you wait, your lifts stay stuck at the same weight.

You earned the size. Go get it.

What DIOBOL will not do

  • Do the training for you. Hard sets and enough food still matter.
  • Hit like a stimulant. You will not feel a buzz 20 minutes in.
  • Act like a hormone. It is non-hormonal, so you need no PCT.

It is built to push size and strength in the muscle you train.†

30DayMoney back

30-Day First-Bottle Guarantee

Try your first bottle. Not happy? Email us within 30 days after delivery and send it back. We refund that bottle, even opened or empty.

Start My 8-Week Cycle ↑

30-day first-bottle guarantee · No needles · 4.2★ from 35+ reviews

AutoShip: $65.99 a bottle every 4 weeks, about $2.36 a day. It renews until you change or cancel it.

Questions

Quick answers.

Do I need PCT with DIOBOL?

No. PCT stands for post-cycle therapy. It is the 4 weeks after a hormonal cycle, when you take Arimidione and Cycle Support.

DIOBOL is non-hormonal, so it needs no PCT. If you stack it with a hormonal product, follow that product’s PCT plan.

Is DIOBOL a hormone?

No. DIOBOL is a non-hormonal dietary supplement. Its two actives are 6-Keto-Diosgenin and 5-Hydroxy-7-Methoxyflavone, at 150 mg each.

What does “Advanced Users Only” mean?

The label says it for a reason. DIOBOL is built for men with 2 or more years of steady training and a diet they track.

If this is your first product like this, start with Uronabol or MYO-11.

How is DIOBOL different from MYO-11 and Uronabol?

All three are non-hormonal and need no PCT. MYO-11 is formulated for strength and a fuller look. Uronabol is formulated for a dense, hard look.†

DIOBOL is the advanced option, with two actives at 150 mg each.†

What happened to the DIOBOL chews?

Lifters told us the chews did not hit hard enough. This liquid is the full-strength version, with 150 mg of each active per 2 mL serving.

Can I stack DIOBOL with other products?

Yes. It is non-hormonal, so you can run it with MYO-11, Uronabol, or a hormonal cycle. If you add a hormonal product, follow that product’s PCT plan.

How many bottles do I need?

Each bottle has 30 servings of 2 mL, enough for 4 weeks with a couple of days to spare. One 8-week cycle takes 2 bottles.

You can run it for as long as 12 weeks, which is 3 bottles.

How does AutoShip work?

AutoShip sends a bottle every 4 weeks at $65.99, so two shipments cover one 8-week cycle. An every-8-weeks plan is also $65.99 a bottle.

AutoShip renews until you change or cancel it. You can do either any time in Manage Subscriptions.

How do I take it, and how does it taste?

Take 2 mL once a day, in the morning or before you train.

It tastes strong. If it tasted like candy, you would wonder what was in it. Keep a chaser ready.

Will DIOBOL cause hair loss?

DIOBOL is non-hormonal. If hair loss runs in your family and worries you, talk to your doctor before you start any new supplement.

What side effects should I know about?

The taste is strong. DIOBOL is non-hormonal, so it needs no PCT.

If you feel unwell, stop taking it and talk to your doctor.

I am on TRT. Can I use DIOBOL?

Talk to the doctor who prescribes your TRT before you start. Your doctor knows your blood work and your other medicines.

Will DIOBOL show up on a drug test?

We cannot promise any test result. If you compete in a drug-tested sport, show the label to your sport’s testing body before you start.

I am over 50. Will it work for me?

You are in good company. The median age our customers tell us is 46. Age alone is not a reason to sit this out. Buyers on this page include men aged 58 and 75. Results vary.†

Self-reported by 297 customers who shared their age in our post-purchase surveys, Jun 27 – Oct 24, 2026.

If you have a medical condition or take any medicine, talk to your doctor first.

I have been burned by other supplements. Why trust this one?

Fair question. The label lists both actives at 150 mg each per 2 mL serving.

Your first bottle also has a 30-day money-back guarantee, even if you open it.

Can I keep taking creatine and protein?

Yes. Keep your creatine, protein, and pre-workout. If you take any medicine or have a medical condition, talk to your doctor before you start.

You built the base. Now build the mass.

Jared · Founder, Vintage Muscle

Per 2 mL serving: 6-Keto-Diosgenin 150 mg · 5-Hydroxy-7-Methoxyflavone 150 mg

Some reviewers got a discount for adding a photo. Lee Priest and CT Fletcher are paid brand partners.

Important safety information

  • DIOBOL is a non-hormonal dietary supplement, so it needs no PCT. If you stack it with a hormonal product, follow that product’s PCT plan.
  • The label says Advanced Users Only. It is built for men with steady training experience.
  • It tastes strong. Keep a chaser ready. If you feel unwell, stop and talk to your doctor.
  • We cannot promise any drug test result. If you compete in a tested sport, check your sport’s rules before use.
  • For men 21 and older. Not for women, anyone under 21, or anyone with a liver, kidney, or heart condition.
  • Talk to a doctor before use, especially if you have a medical condition or take any medicine, including TRT.

†Individual results vary. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Old School Mass Activator - DIOBOL
Excellent 4.9 | 13K+ reviews

Old School Mass Activator - DIOBOL

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Why trust us when every other supplement brand has lied to you?

Why trust us when every other supplement brand has lied to you?

You’ve tried it all.

Powders. Pills. Pre-workouts. Test boosters. Protein tubs stacked to the ceiling.

Every label screaming “science-backed.” Every ad promising “massive gains.”

And what happened?

Plateaus. False hope. Wasted money. Weak results.

That’s because most of the industry is built on fillers, caffeine, and fairy dust doses. Lies packaged in shiny tubs.

Vintage Muscle is different.

We don’t push hype—we push hardcore precursors designed to actually change your results.

Every formula is pure, potent, and HPLC-tested. No cheap junk. No under-dosing. Just real compounds that fuel size, strength, and recovery.

Don’t take our word for it. Look at the reviews. Thousands of lifters already transformed.

And if you’re still skeptical—we get it. You’ve been lied to too many times.

That’s why we back everything with a 100% money-back guarantee.

If you don’t feel harder, stronger, and bigger in 30 days, you don’t pay. Period.

Now it’s on you to take the leap.

Start your cycle. Document it.

And in a few weeks, you might be the next guy DM’ing us:

“I can’t believe I didn’t start sooner.”


Jared Van Yperen, Founder Vintage Muscle

Real customers, real results

Customer Reviews

Overall rating: 4.7 / 5 from 29 reviews.

Customer photo review of Old School Mass Activator - DIOBOL

I have seen a big impact with the first week of use better pump able to push more weight. Can’t be happier with what the product is doing for me!!! also seeing visible results quickly!!!!

Old School Mass Activator - DIOBOL

Customer photo review of Old School Mass Activator - DIOBOL

Got in on the batch and man it is killer. The pumps have increased the weights have increased and the mass unbelievable.

Old School Mass Activator - DIOBOL

Customer photo review of Old School Mass Activator - DIOBOL

59 in January I’ve used their products for six years. Every one of them is as advertised with diet and proper workout. No pins required…. And call me crazy but I like the taste.

Old School Mass Activator - DIOBOL

Customer photo review of Old School Mass Activator - DIOBOL

58 i have used the whole line . All awesome and this is no exception… massive pump and they stay seems like ALLDAY! Got it on subscribe!

Old School Mass Activator - DIOBOL

Customer photo review of Old School Mass Activator - DIOBOL

I have been using these products for about 3 months. And yes, this is the result. Before it just didn't increase but now I'm growing, thank you.

Old School Mass Activator - DIOBOL

Customer photo review of Old School Mass Activator - DIOBOL

I have just been a few days in the dianobol but have used several. Other compounds that I have begun thinking are really doing what I want. I have seen more energy and a great pump! Going to continue to see more growth in the coming weeks using your products with the level of training I am pursuing. I want to be ready by the new year to enter my first bodybuilding contest. Well, thank you guys for this mix you have come across. Would like to give you updates somehow. Anyway, thank you again.

Old School Mass Activator - DIOBOL

I can feel the difference in my muscle already. I'm 75 years old and this makes big difference. I'm looking forward to working out much better. All I can say is, this is great.

Old School Mass Activator - DIOBOL

Wooo!! Stuff seems to be working great.. In conjunction with some other stuff I'm using.. My gym results are great. At my age.. And illness.. I'm doing a lot better than before.

Old School Mass Activator - DIOBOL

Been 11 days today, stacking with myo 11 and methyl test pumps are great workouts are longer we’ll see if the size changes towards the end

Old School Mass Activator - DIOBOL

Definitely working. Notice an increase in strength for sure a couple weeks in. Gotta get diet more on point but hey it is bulking season. So far two thumbs up Besides the taste that is

Old School Mass Activator - DIOBOL

Hi ,I'm six days in and I'm starting to notice muscles are getting fuller and staying pumped longer!

Old School Mass Activator - DIOBOL

This is the only supplement from Vintage Muscle that really has not made a big difference in my gains. I take the recommended dosage that is on the bottle everyday. I’m a little disappointed with this product. The one thing I can say as a positive comment this product tastes better than any of the other products.

Old School Mass Activator - DIOBOL

👍🏻💪🏻💪🏻💪🏻💪🏻💪🏻💪🏻💪🏻💪🏻💪🏻

Old School Mass Activator - DIOBOL

I feel good energy throughout my workouts and strength is improving and/or at least maintained while I’m in a calorie deficit. Very positive signs.

Old School Mass Activator - DIOBOL

"If My Products Don’t Build You Up, We Don’t Want Your Money."

"If My Products Don’t Build You Up, We Don’t Want Your Money."

If Vintage Muscle doesn’t help you get stronger, harder, and more powerful within 30 days of daily use, we don’t want a dime from you.

We’re confident because these formulas work. They’ve already transformed thousands of men.

But here’s the truth — nothing works for everyone. And if it doesn’t work for you, we’ll refund you. No excuses.