1-Andro vs 4-Andro: Which One Is Right for You
You made the call to run your first prohormone. Good. Now two names keep coming up and they look almost the same: 1-Andro and 4-Andro. One number apart. But they do not do the same job. Pick the wrong one and you can waste a whole cycle chasing a look you were never going to get.
Here is the plain-English breakdown. What each one is, what kind of muscle it builds, which fits a cut, which fits a bulk, and how to run them the smart way.
The short answer. 1-Andro builds lean, dry, hard muscle with little water. It is the pick for a cut or a lean look, and it lives in our 1-Androl Stack. 4-Andro builds fuller size and bigger strength, but it holds more water and needs estrogen control. It is the pick for a bulk, and it anchors our RAD-Mass Stack. Want lean, go 1-Andro. Want mass, go 4-Andro. You can also run both.
What is 1-Andro?
1-Andro is short for 1-Androsterone. Once it is in your body, it converts in a couple of steps into a compound called 1-testosterone. That is the muscle signal.
The key thing about 1-Andro is what it does not do. It does not turn into estrogen. No estrogen means no bloat and no soft, puffy look. The muscle you build comes in dry and hard, with better vascularity and a tight finish.
Think of 1-Andro as a chisel. It does not add a flood of mass fast. It carves. You get dense strength, a harder look, and gains that are easy to keep. That is why it is a favorite for a cut or a lean recomp. You will find it in the 1-Androl Stack.
What is 4-Andro?
4-Andro is short for 4-DHEA. It converts into plain testosterone, the same hormone your body already runs on. That makes it feel like a natural test boost, only stronger.
Here is the trade-off. Some 4-Andro turns into estrogen. That is not all bad. A bit of estrogen helps you feel full, strong, and driven, with better pumps and mood. But too much brings water weight and a softer look. So 4-Andro asks you to manage your estrogen.
Think of 4-Andro as a hammer. It builds size and raw power fast. You will see the scale move and your big lifts climb. It is the pick for a bulk, and it anchors the RAD-Mass Stack. If your goal is pure size, the 19-Nor Stack is another strong mass option.
1-Andro vs 4-Andro: the head to head
| What matters | 1-Andro | 4-Andro |
|---|---|---|
| Converts to | 1-testosterone | Testosterone |
| Turns into estrogen | No | Yes, some |
| The look you get | Lean, dry, hard | Full, big, strong |
| Water weight | Low | Higher |
| Best for | Cut, recomp, lean bulk | Bulk, mass, strength |
| Needs estrogen control | Little | Yes, run support |
| In our line | 1-Androl Stack | RAD-Mass Stack |
Which one is better for cutting?
1-Andro wins for a cut, and it is not close. Because it does not hold water, the muscle you keep in a calorie deficit looks hard and dry, not flat and soft. It helps you hold your size while the fat comes off.
For a lean, hard finish, many men run the 1-Androl Stack and add Win-Test for extra dryness and detail. That combo is built for the cut-and-harden look.
Which one is better for bulking?
4-Andro wins for a bulk. The size comes on fuller, the strength jumps are bigger, and the pumps feel better in the gym. If the goal is to get bigger and stronger, the RAD-Mass Stack is your base.
Just remember the water. Some of that early weight is fluid, not muscle. Manage your estrogen and a good part of the gain sticks around as real size.
Can you run 1-Andro and 4-Andro together?
Yes, and a lot of guys do. Running a dry compound with a wet one is a classic move. The 4-Andro brings the size and strength. The 1-Andro keeps the look harder and tighter than mass alone would give you. You get the best of both.
If you go this route, do not freelance the doses. Start with a plan and keep your support in place from day one.
Both compounds need post-cycle support, and 4-Andro needs it most. The Muscle Support Stack manages estrogen during your run and helps your natural testosterone bounce back after. This is the step that decides whether you keep your gains or watch them fade.
Both are the third door
Notice what neither of these needs. No needle. No prescription. No doctor visit. 1-Andro and 4-Andro are legal prohormones you take under your tongue. They sit in the lane between weak store supplements and going all the way to a clinic.
If you are still deciding whether to run a prohormone at all, or you keep hearing about SARMs, read our Prohormones vs SARMs guide first. It covers which path is safer and more legal before you pick a compound.
So which should you pick?
It comes down to your goal.
- Want lean, dry, and hard, or you are cutting? Go 1-Andro with the 1-Androl Stack.
- Want size, mass, and bigger lifts? Go 4-Andro with the RAD-Mass Stack.
- Not sure and want a proven base? Start with our most reviewed product, the Alpha Test Stack.
- Want both looks? Stack them, and run your Muscle Support Stack with it.
Brother, there is no wrong first step here. There is only the step that matches the body you are after. Pick the goal, pick the compound, and run it right.
Pick your path
Lean and dry, or size and strength. Both are legal, both go under your tongue, both are backed by thousands of reviews.
1-Andro vs 4-Andro FAQ
Is 1-Andro or 4-Andro better for a first cycle?
It depends on your goal. 4-Andro feels like a stronger natural test boost and is a good pick for size. 1-Andro is the pick for a lean, dry look. If you want the simplest proven starting point, the Alpha Test Stack is our most reviewed entry product.
Does 1-Andro cause estrogen side effects?
No. 1-Andro does not turn into estrogen, so it does not bring the bloat or soft look that comes with high estrogen. That is why the gains run dry and hard.
Do I need post cycle support for 4-Andro?
Yes. Because 4-Andro converts to estrogen, run the Muscle Support Stack during and after your cycle to manage estrogen and restore your natural testosterone.
Can I stack 1-Andro and 4-Andro together?
Yes. Running them together pairs the size and strength of 4-Andro with the dry, hard look of 1-Andro. Keep your support in place the whole time.
Which one gives more strength?
4-Andro tends to give bigger, faster strength and size jumps. 1-Andro gives a denser, drier kind of strength that holds up well in a cut.
You do not need to guess your way through your first run. Match the compound to the man you are trying to build, keep your support tight, and let the results speak for themselves.
- Jared
This article is for general education and is not medical advice. Statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Talk with your doctor before starting any supplement, and check the rules that apply where you live.