RAD-140 vs LGD-4033

The Dose Guy’s verdict
Oct 27, 2026
6 sources

If you are set on one of these two, run LGD-4033. It builds the size people come for and runs calmer in the head, but the bill is real: it suppresses your testosterone, crushes lipids, holds water, and carries its own liver risk. RAD-140 is for someone chasing dry strength who accepts a louder liver record and a shorter fuse to get it. Never stack them, and run a full PCT after either. If neither trade sounds worth it, ostarine is the SARM I would actually point you to.

Which would I take?LGD-4033 for size, if it has to be one.

How they differ

On raw output these two are close, the two strongest SARMs people actually run, and both behave like oral steroids with a nicer label. The difference is what the gains look like and what they cost. LGD-4033 makes you bigger: full, round, and heavier on the scale within a couple of weeks, with a few pounds of water that leave when you stop. RAD-140 makes you harder: little water, a strength jump early, a drier look, and a temper the people around you notice before you do.

The costs differ in kind. Both suppress your testosterone hard and drag HDL down, with RAD-140 a notch heavier on suppression. The liver is where RAD-140 earns the louder warning: it hits the liver harder than the selective label suggests, and the case reports are young men at gym doses. LGD-4033 has liver case reports too, so the liver is a reason for bloodwork on either, not a reason to pick one. What decides it is the goal. LGD-4033 is the size SARM, water included, and it runs calmer; RAD-140 is drier and more aggressive. That is why LGD-4033 gets my pick when size is the goal.

RAD-140 wins one case: a cut or recomp where you want to look dry, since LGD-4033’s water blurs the picture. Day to day the rhythm is identical. One capsule a day, and both clear slowly, so the time you take it barely matters and a missed day changes nothing. If both of these sound like more than you want to recover from, ostarine is the step down, milder in every direction.

What the research shows

Nobody has run these two against each other. Each has one human trial, in very different people at very different doses, plus liver case reports:

No head-to-head trial of RAD-140 against LGD-4033 exists, and no randomized human trial of RAD-140 for muscle gain, strength, or body composition exists.as of Aug 2026
LGD-4033 at 0.1, 0.3, or 1.0 mg daily for 21 days in 76 healthy men: lean body mass rose with dose, and total testosterone, SHBG, HDL, and triglycerides fell with dose, all returning to baseline after treatment stopped. AST and ALT did not change significantly.J Gerontol A 2013 · RCT · n=76
RAD-140 at 50, 100, or 150 mg daily in 22 women with metastatic breast cancer: elevated AST in 59.1%, elevated ALT in 45.5%, and elevated total bilirubin in 27.3% of participants.Clin Breast Cancer 2022 · phase 1 · n=22
A 32-year-old man developed severe drug-induced liver injury after using LGD-4033, with biopsy showing cholestatic hepatitis and mild fibrosis.ACG Case Rep J 2020 · case report
A 24-year-old man developed cholestatic liver injury after five weeks of RAD-140, with peak total bilirubin of 38.5 mg/dL. It resolved after he stopped.Ochsner J 2022 · case report

Different trials, different people, doses at least 50 times apart, so the enzyme numbers do not make LGD-4033 safe and RAD-140 dangerous. They say both can hit the liver, and RAD-140 has the louder record.

How people run them

Both run the same shape: one capsule a day for eight weeks, bloodwork before and after, a full PCT when it ends. What differs is the scale. LGD-4033 starts at 5 mg and RAD-140 at 10, so a milligram of one tells you nothing about the other. On either, hold the starting dose while strength and fullness keep coming. Going up buys more suppression and liver load for a difference most people cannot see in the mirror.

There is no good reason to switch mid-cycle. Between cycles, recover fully first, with bloodwork back to baseline, then start the other one at its own entry dose. The usual moves: bloated on LGD-4033 and want a drier look next time, go to RAD-140; temper or liver panel went sideways on RAD-140, go to LGD-4033.

Forums stack the two. Skip it. You double the suppression and the liver load, and when the bloodwork comes back ugly you cannot tell which one did it.

Recovery is the same after either: a SERM for four weeks, starting about a week after the last capsule, because both clear slowly and an early start wastes the first week. Skip the alcohol the whole way through; both stress the liver, and drinking on top is how people end up in the case reports. Expect libido and energy to dip by mid-cycle on either. Get a third-party COA before the first capsule, because this market gets the label wrong often. Both are WADA-banned, with no short detection window on either.

LGD-40335 mg/dayEight weeks; 10 mg only if 5 genuinely stalls, and the extra shows up as water first.
RAD-14010 mg/dayEight weeks; 15–20 mg only if 10 genuinely stalls, at more liver cost.
Switchingnext cycle onlyFinish PCT and get clean bloodwork, then start the other at its entry dose.
Stackingskip itDouble the suppression and liver load, and no way to tell which one wrecked the panel.
PCT, eitherNolvadex 20 mg or enclomiphene 12.5 mgFour weeks, starting about a week after the last dose.

Side effects, side by side

Same suppression and lipid hit on both; LGD-4033 adds water, RAD-140 adds temper and the louder liver record:

commonTestosterone suppression on both, a notch heavier on RAD-140. Libido, mood, and energy dip by mid-cycle. A full PCT afterward on either.
commonHDL drops on both while you are on. Lipids recover after the cycle; check a panel before you start another.
commonWater retention on LGD-4033: a few pounds on the scale and a softer look, gone when you stop. RAD-140 holds little.
anecdotalAggression and short temper on RAD-140, reported widely and dose-related. If the people around you mention it, lower the dose. LGD-4033 runs calmer.
monitorLiver injury on both, in case reports of healthy young men, with RAD-140 carrying the louder signal. Liver enzymes before and after, mid-cycle too on RAD-140, and stop if they climb.

Where to buy RAD-140

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Where to buy LGD-4033

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