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Stenabolic vs T3 (Cytomel): side-by-side comparison

Fat Burner

SR9009 · SR-9009

A Rev-Erb agonist that improves metabolic rate and circadian rhythms. Enhances exercise capacity and metabolism without affecting hormones.

5.0/10 natty
Full breakdown →
VS
Fat Burner

Liothyronine · Cytomel · Triiodothyronine

The most biologically active thyroid hormone, roughly 3-4x more potent than T4 at the cellular level. Used in bodybuilding to dramatically accelerate metabolic rate and fat loss during cutting phases. Powerful but carries significant risks including muscle catabolism and thyroid suppression if used improperly.

5.0/10 natty
Full breakdown →

5 / 10 natty scale / 5

Same lane

Both sit in the same class and are run for cutting, performance. This is a like-for-like comparison: read the gaps as real trade-offs.

The tape

Core ratings

The same three rulers every entry on the site is scored with, read head to head.

StenabolicT3 (Cytomel)
5.0

Natty scale

1 natural · 10 heavy

5.0
3.5

Effectiveness

Documented effect · of 5Δ1

4.5
2.0

Side-effect severity

Documented burden · of 5Δ1

3.0

Cost side

Body-load fingerprint

Where each one actually lands its strain, on the calculator's thirteen channels. Tap a row for what it means and which labs track it.

StenabolicT3 (Cytomel)

Cardiometabolic

Organ strain

Hormonal

Systemic

Bars show strain at each one's typical protocol, not your dose. ≈ marks values inferred from side-effect data or category rather than hand-graded. For your numbers, run the calculator.

Logistics

The vitals

StenabolicT3 (Cytomel)
Fat Burner
Classmatch
Fat Burner
Oral
Routematch
Oral
10-30 mg/dayDaily oral, split into 3-4 doses due to the short (~4 hour) half-life. Some users switch to injectable (reportedly ~5-10mg) or sublingual dosing to bypass first-pass metabolism and improve bioavailability, community-reported, not clinically verified.
Typical dose
25-100 mcg/dayOnce daily or split into 2 doses. Take in the morning.
~4 hours
Half-life
~1 day
6-8 weeks
Typical run
4-8 weeks
Research chemical
Legal status
Prescription only
ProhibitedS4. Hormone and Metabolic Modulators
WADA
Not prohibited

Benefit side

What each is for

Shared goals carry both dots; a goal with one dot belongs to that side alone.

StenabolicT3 (Cytomel)
CuttingPerformance

Run for

Metabolic EnhancementIncreases metabolic rate and energy expenditure.
Exercise CapacityImproves endurance and exercise performance.
Circadian RegulationMay improve sleep-wake cycles and circadian rhythm.

Documented upside

  • Increased metabolism
  • Enhanced exercise capacity
  • No hormonal effects
  • May improve sleep patterns
  • Fat loss support

Run for

Fat Loss AccelerationDramatically increases metabolic rate and caloric expenditure. A controlled VLCD trial (Wilson & Lamberts 1981) showed T3 increased daily weight loss from 269g/day to 395g/day.
Contest PrepUsed by competitive bodybuilders in the final weeks before competition to achieve extremely low body fat levels.
Metabolic EnhancementIncreases BMR by stimulating cellular oxidation, enhancing carbohydrate metabolism, and improving thermogenesis.
Counteracting Metabolic AdaptationCan prevent the metabolic slowdown that occurs during prolonged caloric restriction.

Documented upside

  • Roughly 3-4x more potent than T4 at cellular level
  • Rapid onset - effects begin within hours
  • Dramatically increases basal metabolic rate
  • Enhances fat oxidation and thermogenesis
  • Short half-life allows quick adjustment if issues arise
+3 more on the full page

The downsides

Side effects, aligned

Each entry's documented side effects, sorted onto the same body systems so the gaps and the overlaps are visible. Tap any effect for the detail.

StenabolicT3 (Cytomel)

None documented

Heart
Mood, sleep & CNS

None documented

Suppression & fertility
Other documented effects

The exit

Hormonal fallout & recovery

What each does to your own hormone axis while on, and what leaving it costs.

StenabolicT3 (Cytomel)
Not required
PCT
Not required
While-on only
What sticks
While-on only

Stenabolic

Not hormonal. No PCT required.

T3 (Cytomel)

T3 does not affect the HPT (testosterone) axis. However, it does suppress the hypothalamic-pituitary-thyroid axis. No traditional PCT needed but MUST taper dose and allow thyroid recovery. Older TRH-stimulation studies of thyroid hormone withdrawal found the pituitary TSH response returning within roughly 1-2 weeks in many patients, with full normalization of the axis taking longer. Exact timelines are dose- and duration-dependent and not tightly established for bodybuilding-style protocols, so treat "2-8 weeks" as the working estimate.

Read-out

How they separate

  1. 01

    Enhancement

    They land at almost the same point on the natty scale (5/10 vs 5/10): a similar distance beyond natural.

  2. 02

    Side-effect bill

    T3 (Cytomel)'s documented side-effect severity is heavier (3/5 vs 2/5). The body-load fingerprint above shows where that weight actually lands.

  3. 03

    Body load

    The widest gap at typical protocols is blood pressure (T3 (Cytomel) 7.8/10 vs 0/10), then heart structure (T3 (Cytomel) 5.6/10 vs 0/10).

  4. 04

    Coming off

    Neither requires PCT: both leave the natural testosterone axis running.

  5. 05

    Logistics

    typical runs are 6-8 weeks vs 4-8 weeks.

  6. 06

    Tested athletes

    Stenabolic is WADA-prohibited; T3 (Cytomel) is not on the prohibited list.

Generated from each entry's data file. Descriptive, not a recommendation; nothing here is medical advice.

Full breakdownStenabolic→Full breakdownT3 (Cytomel)→

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