ProtokolPROTOKOL
Medication

Liothyronine (T3/Cytomel)

Half-life

~24 hours

What is Liothyronine (T3/Cytomel)?

Active thyroid hormone. Dramatically increases metabolic rate. Used in cutting cycles for fat loss.

How Liothyronine (T3/Cytomel) works

Active thyroid hormone directly binds TR receptors for rapid metabolic and chronotropic effects.

Benefits & uses

Common uses: Hypothyroidism, metabolic rate elevation, fat loss on cycle, T4→T3 conversion issues.

Liothyronine (T3/Cytomel) half-life

~24 hours

Liothyronine (T3/Cytomel) side effects

Palpitations, muscle loss if not enough protein/anabolic support, suppresses natural thyroid.

  • Tachycardia/anxiety
  • Muscle catabolism with excess
  • Arrhythmia risk

Track Liothyronine (T3/Cytomel) in Protokol.

Log doses, model half-lives, check interactions, and line it all up against your bloodwork. Free on iPhone and Android.

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For research and educational purposes only. This page is not medical advice and is not a recommendation to use any compound. Many compounds listed are not approved for human use, and some are prescription-only or controlled in your jurisdiction. Dosing figures are reference or observational reports. Talk to a qualified healthcare provider before starting, stopping, or changing anything. Protokol is for tracking purposes only.