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Testosterone

top pick

Also seen as: Testosterone Enanthate, Testosterone Cypionate, Testosterone Propionate, Test

The Dose Guy’s verdict
Sep 1, 2026
6 sources

The one anabolic worth considering even if you never plan to step on a stage. I have wanted to run it for years as a life enhancer and still have not pulled the trigger, partly because my own levels test high, and that is the honest first question: if your natural levels are already good, the case gets weaker. Testosterone is the most studied, best understood, and most forgiving compound on this shelf, and it is the base of every serious stack. The catch: once you start managing your own hormones, you are on that road for good, cycling with a proper PCT or accepting that TRT is part of your life now.

Would I take it?Yes, and I've wanted to for years.

What it is

Your body already makes testosterone. Exogenous testosterone is the same molecule, intramuscularly injected as an ester that sets the pinning rhythm, cypionate and enanthate for twice-weekly shots, propionate for more frequent ones. At TRT-range doses you are replacing what your body makes on its own. At cycle doses you are running multiples of it, and the extra drives protein synthesis, nitrogen retention, and red cell production harder than your natural output ever could.

Every other anabolic on this shelf is a modification of testosterone. Nandrolone, boldenone, trenbolone, all of them suppress your own production, which is why nearly every stack runs testosterone as the base: without it your levels crater, your libido disappears, and you feel terrible. Testosterone is both the tool and the floor.

What the research shows

Testosterone has what almost nothing else on this shelf has: large, long, randomized human trials. The data runs from dose-response work in young men through multi-year cardiovascular safety trials in older hypogonadal populations:

In healthy young men given graded weekly doses of enanthate for 20 weeks, fat-free mass rose dose-dependently: 3.4 kg at 125 mg, 5.2 kg at 300 mg, and 7.9 kg at 600 mg.AJP Endocrinology 2001 · dose-response RCT · n=61
Healthy men on 600 mg weekly plus strength training gained 6.1 kg of fat-free mass over 10 weeks, with bench press up 22 kg and squat up 38 kg.NEJM 1996 · RCT · n=43
In the largest testosterone safety trial, major adverse cardiovascular events occurred in 7.0% on testosterone and 7.3% on placebo, hazard ratio 0.96, meeting noninferiority. TRAVERSE also flagged higher rates of atrial fibrillation, acute kidney injury, and pulmonary embolism versus placebo.NEJM 2023 · TRAVERSE safety RCT · n=5246
In the same program, clinical fracture occurred in 3.50% on testosterone versus 2.46% on placebo over a median 3.19 years, hazard ratio 1.43, 95% CI 1.04 to 1.97.NEJM 2024 · TRAVERSE fracture subtrial · n=5204
In older men with analyzable scans, testosterone gel increased noncalcified coronary plaque volume 41 mm3 more than placebo over one year, 95% CI 14 to 67 mm3.JAMA 2017 · TTrials plaque RCT · n=138
Among older men with unexplained anemia, hemoglobin rose by at least 1.0 g/dL in 54% on testosterone versus 15% on placebo at 12 months.JAMA IM 2017 · TTrials anemia RCT · n=788

Realistic protocols

Two contexts, two protocols. If you are running testosterone as TRT, the goal is stable levels in the upper-normal range, 100 to 200 mg a week of enanthate or cypionate, split into two pins to keep blood levels flat. Bloodwork at six weeks to check your trough. Most men settle between 120 and 160 mg and stay there indefinitely.

If you are running a cycle for size and strength, the beginner dose is 300 to 500 mg a week for 12 to 16 weeks. Keep an aromatase inhibitor on hand but do not start it preemptively: run bloodwork mid-cycle, and only bring the AI in if estrogen sides show or your labs confirm high E2. More testosterone aromatizes more, so the higher the dose, the more likely you need it.

Every cycle needs an exit plan. Either you are on TRT and you cruise back down after the blast, or you run a PCT to restart your own production. Plan the exit before the entry. Bloodwork before, during, and after is the price of doing this with your eyes open: lipids, hematocrit, liver, estrogen at minimum.

Alcohol is not the disaster on testosterone that it is on GLP-1 compounds, but it stresses the liver and your lipid profile on top of a compound that already nudges hematocrit up. Keep it moderate or skip it during a cycle.

TRT100–200 mg/wkEnanthate or cypionate, split into two pins. Stable upper-normal levels.
First cycle300–500 mg/wk12–16 weeks. Test-only is the smart first run.
EstrogenAI on handDo not start preemptively. Bloodwork or sides first.
PCTAfter last pinNolvadex or clomid. Plan the exit before the entry.

Side effects

The side profile is well mapped and mostly manageable if you are paying attention:

commonAcne, oily skin, and water retention, all dose-dependent and worse at cycle doses. Estrogen-driven sides like bloating or sensitive nipples mean E2 is climbing.
monitorHematocrit rises, sometimes past the safe line. Donate blood or back off the dose.
monitorLipids shift: HDL drops, LDL can rise. The higher the dose and the longer the run, the worse it gets. Bloodwork catches it before your arteries do.
commonTesticular atrophy while you are on. Your body stops making its own when you supply it from outside. HCG during cycle preserves size and makes PCT recovery easier.
anecdotalHair thinning in men predisposed to male-pattern baldness. Testosterone converts to DHT, and DHT is the hair killer.

Where to buy

PCT.zone–
$48 / 3750mg vial$0.013/mg
✓ verified Sep 12
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5AR Society–
$75 / unit
✓ verified Sep 12
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