SKU: 5731572280

Hi Tech | Hi-Tech 4A+ | 2-Product Stack

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Description

Hi Tech | Hi-Tech 4A+ | 2-Product StackTwo androgen precursors for real bulking cycles Hi Tech Pharmacueticals 4A+Decabolin Bulk Stack isn't your everyday muscle builder. It's a prohormone style stack using two androgen precursors: 4 Androstenediol as Androdiol and 19 Norandrostenediol as Decabolin. The idea is simple and boldteam up a testosterone precursor with a nandrolone one to help with training intensity, recovery, and packing on lean mass more than regular supps do. First up is 4

Two androgen precursors for real bulking cycles

Hi Tech Pharmacueticals 4A+Decabolin Bulk Stack isn't your everyday muscle builder. It's a prohormone-style stack using two androgen precursors: 4-Androstenediol as Androdiol® and 19-Norandrostenediol as Decabolin®. The idea is simple and bold—team up a testosterone precursor with a nandrolone one to help with training intensity, recovery, and packing on lean mass more than regular supps do.

First up is 4-Androstenediol, in here as Hi-Tech’s Androdiol®. It works as a direct precursor to testosterone, converting through enzymes like 3β-hydroxysteroid dehydrogenase in the body's steroid pathways. Basically, it feeds right into your androgen system instead of just hinting at it. Studies suggest liposomal 4-Andro works around 100–150 mg, but this stack doesn't list the exact dose. That's key to note. Oral 4-Andro can get hit hard by liver metabolism, so the delivery tech is what makes or breaks it. What you'll notice: more drive in the gym, aggressive sessions, a denser look, and better muscle gains when you're eating big.

Next is 19-Norandrostenediol, as Decabolin®. This turns into nandrolone via steroid enzymes, becoming 19-nortestosterone. Nandrolone helps with protein synthesis, holding onto nitrogen, and creating a muscle-building setup for hypertrophy. Since 19-nor stuff misses the carbon-19 methyl group from normal testosterone paths, it usually turns into less estrogen. The k

Key Highlights

  • Doubles up on bulking with two compounds—4-Androstenediol and 19-Norandrostenediol instead of just one. This hits both testosterone and nandrolone paths, making it a smarter way to chase mass than single-ingredient options.
  • Androdiol® handles the 4-Andro side—it's a precursor that converts to testosterone through body enzymes. You'll feel better drive, fuller workouts, and a solid anabolic boost when you're in a surplus.
  • Decabolin® brings the 19-Nor angle—a precursor to nandrolone, which supports protein synthesis and nitrogen retention. For you, that means a stack focused on hypertrophy and recovery, not vague 'muscle help' claims.
  • 19-Nor has a lower chance of turning into estrogen—missing that carbon-19 methyl group makes it different from regular testosterone precursors. So Decabolin® stands out as a unique bulking player.
  • Made for building over time, not quick hits—you're not getting this for a fast rush. It's about seeing changes in gym performance, recovery, muscle fullness, and weight gains when your diet and training are on point.
  • Branded ingredients for clarity—Decabolin® and Androdiol® make it easier to know what you're getting compared to sketchy prohormone products with confusing labels.
  • There's clinical backing, but doses aren't listed—studies point to 100–150 mg for both 4-Androstenediol and 19-Norandrostenediol, but this stack keeps amounts under wraps. That's worth knowing if you're serious.
  • Straight-up for bulking, not cutting hype—the ingredients are all about anabolic precursors for eating big, lifting heavier, and programming for size.

Who Is This For?

  • Bodybuilders kicking off a mass phase wanting aggressive androgen support beyond basic builders. 4-Androstenediol and 19-Norandrostenediol line up with bulking—better training, recovery, and weight gains.
  • Powerbuilders doing high-volume lifts plus hypertrophy who need recovery to match the grind. The testosterone and nandrolone precursor mix suits holding strength while building visible muscle.
  • Gym vets with dialed nutrition—steady protein, surplus calories, solid programs—wanting stronger anabolic targeting than herbs or natural boosters. This requires planning and know-how.
  • Lifters who dig androgen supps and want a two-part bulking play over single ingredients. Androdiol® plus Decabolin® gives drive and mass focus.
  • Intermediate-advanced guys stuck on non-hormonal stacks, hunting anabolic precursors for size and performance in growth blocks. It's focused, not all-over-the-place.
  • Dudes periodizing supps around short bulks. Fits phase thinkers—build, eat big, progress, then support—over random year-round use.

How to Use

Go by the label to a T—verified servings and doses weren't in the data here. Take it every day in your cycle, not just workouts, since these precursors build hormonal effects over time. If you're new, don't up the dose; responsible use is key with hormone stuff more than basic supps. Time it the same daily, maybe with food if label allows and your gut needs it. Avoid casual stacks with other prohormones, SARMs, or hormone agents unless you get the interactions. It fits better with basics like creatine, protein, fish oil than more endocrine gear. Plan support and post-cycle before popping the bottle. Store cool and dry, away from heat, humidity, and kids.

What to Expect

First 1–3 days feel normal, no big rush like stims—this is about long game. Week one, watch for small shifts: gym drive, recovery speed, steady appetite in a bulk, early weight bumps. Days 7–14, things pick up—workouts feel stronger, fullness sticks around. Weeks 2–4 are the sweet spot, aiming for solid training flow, fast recovery from heavies, and clear mass progress with enough calories. No peak and drop since it's not stim-based. Judge it by weekly gym gains and body changes, not 30 minutes post-dose.

Key Ingredients

  • 19-Nor-Andro — Amount not disclosed — Nandrolone precursor built for bulking and recovery support
  • 4-Andro — Amount not disclosed — Testosterone precursor for gym drive and anabolic support

Frequently Asked Questions

What exactly is Hi Tech Pharmacueticals 4A+Decabolin Bulk Stack?

It is a bulking-oriented prohormone-style stack built around two androgen precursors: 4-Androstenediol as Androdiol® and 19-Norandrostenediol as Decabolin®. The formula is designed for experienced users who want more direct hormonal support for mass and training performance than standard non-hormonal supplements provide.

What does the 4A component do in this stack?

The 4A side refers to 4-Androstenediol, included here as Androdiol®. It functions as a direct precursor to testosterone through steroidogenic enzyme pathways, with the intended user experience being stronger gym drive, better training output, and support for lean mass during a bulk.

What does Decabolin® do?

Decabolin® is Hi-Tech’s trademarked form of 19-Norandrostenediol, a precursor to nandrolone. It is included for its bulking reputation, particularly its connection to protein synthesis, nitrogen retention, and a more anabolic environment for muscle gain.

Are the doses of 4-Androstenediol and 19-Norandrostenediol fully disclosed?

No exact verified milligram amounts were available for this stack from the provided data. That means we can identify the active ingredients with confidence, but we cannot fairly confirm whether each lands at the approximate 100–150 mg range often discussed for these compounds.

Is this a pre-workout or something you feel right away?

No. This stack is not built around caffeine or stimulants, and it is not meant to produce an instant rush before training. The category experience is cumulative, with users typically evaluating it by week-to-week changes in performance, recovery, bodyweight, and muscular fullness.

Is this suitable for beginners?

No. This is best reserved for advanced users who already have their training, calorie intake, protein, sleep, cycle support, and post-cycle plan in place. Beginners should exhaust foundational tools like creatine, protein, and structured programming first.

Can I stack this with creatine and protein?

Yes, that is one of the more logical ways to use it. Creatine supports phosphocreatine regeneration for strength and repeat performance, while protein ensures the amino acid supply needed to capitalize on the more anabolic environment this stack is designed to create.

Can I take this with another hormonal product?

Only if you fully understand the overlap and have a clear cycle design. Because this stack already combines two androgen precursors, randomly adding more hormone-active products increases complexity and risk without guaranteeing a better outcome.

How long should a user typically evaluate this stack before judging results?

This category should be judged over weeks, not hours. Most users evaluate changes over the first 2–4 weeks by tracking gym performance, recovery, scale weight, and visual fullness rather than expecting a day-one sensation.

Is this product compatible with drug-tested sports?

No. Both 4-Androstenediol and 19-Norandrostenediol are directly relevant to anti-doping concerns and should not be used by tested athletes.

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SKU: 5731572280

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4.3 ★★★★★
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Jenny
Fort Morgan, US
★★★★★ 3
Sometimes they arrive chewy and great, other times stale and hard as a rock!
Size: 1 Count (Pack of 16)
My dog loves these added to her toys, but alot of time they arrive hard as a rock.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2025
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Verified Purchase
Higgie
Draper, US
★★★★★ 5
If your dog pops with his canines and shreds with his front teeth, this is for you. I have nothing but praise for this toy.
Size: One Size, Style: Bumpy Ball
This is one of the few balls I have purchased that my dog does not destroy. I am surprised at the negative reviews here and have been doing some thinking about why one dog destroys this ball and another does not. Perhaps it is the type of chewer we own? Or because he has a narrow jaw rather than a broad one like a pit bull? My Airedale Terrier likes to shred, preferring to use his back teeth to pop or crush and front teeth to pull apart tennis balls, stuffed animals and the like. I don't know if that will help anyone in making the decision to buy or not to buy this toy. The ball has many dimples where my dog's teeth have sunk in but he has yet to take a chunk out of it. I bought two of these from Marshall's three or four months ago and I play with my dog twice a day, so lots of use here. After I realized what I'd found I promptly ordered two more from Amazon because I wanted to insure I would have them around for a long time. All I can say is that this toy has been a lifesaver for me. My extremely active one year old Airedale Terrier needs a lot of exercise and this ball satisfied that need for us. It is fun for him and I giggle at his antics as he attempts to follow the unpredictable path of the bumble ball. I throw the ball for him from my porch, trying to toss it so it goes over our truck, which my husband leaves in the driveway. If the ball hits the truck, no harm done and more unpredictable for my boy! I can toss the ball around the house without worrying it will break a window. My dog loves to pick up toys and throw them in the air when he plays. He tossed a marrow bone into the air and when it landed I had a nice half inch gash in our coffee table. No more marrow bones in the house for him. I have nothing but praise for this toy and am grateful to have found it.
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Reviewed in the United States on May 3, 2016
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Verified Purchase
William Belden
Boise, US
★★★★★ 5
Great Toy
Size: One Size, Style: Stick
I breed German shepherds. This toy is a soft formed stick made of a memory foam/ rubber polymer. It’s light weight, very durable, floats and my German Shepherds love retrieving this toy. They are not indestructible but they are a great chewing toy for their price. I usually buy several at a time. This toy will help clean their teeth and is soft enough not to damage their teeth. It’s a favorite item for my dogs.
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Reviewed in the United States on November 9, 2024
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Nurse Ratched
Lowell, US
★★★★★ 5
SPECTACULAR dog chew toy!
Size: One Size, Style: Ball
If you look at my profile, you will see that I have bought and reviewed a LOT of dog toys! My boxer is an "aggressive" chewer and we go through dog toys quickly in my house. This has been one of my very favorite chew toys that I have ever purchased. This company sells quite a few of these chew toys in different shapes. This ball is made from a very light foam rubber (I think) material. When I showed it to my husband, he said "that won't last 5 minutes" and I had my doubts too. However, this ball has proven to be EXTREMELY durable! Because it is made from the foam material, it has a lot of tooth sized holes in it after she chews it, but she has been unable to chew the toy apart. I bought another of these chew toys made from the same material in a different shape thinking surely there was some accident that the toy had held up for so long. Nope, the new toy has held up just as well! The toys float in water and are very light and easy to throw. Overall, I will be buying more of these toys and would recommend this product!
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Reviewed in the United States on May 27, 2015
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Verified Purchase
R. Smith
Los Angeles, US
★★★★★ 1
Didn't last one day.
Size: Large, Style: Duck Slingshot, Size: Large, Style: Duck Slingshot
Didn't last even an hour. This damage wasn't from the dog either, it looks like it let loose from the stress of just trying to launch it! It doesn't fly near as far as the discontinued Pig Slingshot toy. Bring back the pig, please. I also ordered the other listed Hyper Pet flying fowl, and it flew the same distance as this one, and has lasted through the day (but needs to be heavier). But for this one, perhaps they needed to double stitch the area under the 'chin'? I'll try to return it. It looks like it should be more durable, but at least that part isn't. Second one: I chose the replacement, instead of a refund because my dog loves me shooting the toys into the yard. He saw the new duck, and was excited. Six shots in and the seam on the bottom of the head was already separating. By 10 or so times, it was getting concerning as the seams were opening enough I was concerned that it would lose its filling. I'm disappointed, and so is my dog. Just in case anyone is wondering, I never let him alone with this, and still feel, even more so, that the failure is the stitching on the bottom of the head, right at the point where the most stresses of launching it are focused. I'd strongly recommend that Hyper Pet use two layers of full canvas over that area, and also Bring Back The Slingshot Pig, PLEASE... The second picture is the second Duck, and my 7 month old. He wasn't ready to end the session. The problem, for us, is that the 'dog run' isn't very long, and all of the other toys I have are bazooka style launching devices that I can't use yet as they would fly far over the fence. Ironically one is from Hyper Pet, and is amazing. Works so well. Too well?
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Reviewed in the United States on July 11, 2022

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