---
title: "YK-11"
description: "⚠️ YK-11 is classified as a SARM but also acts partially as a myostatin inhibitor. Much closer to steroids than classic SARMs in terms of effects AND risks (hepatotoxic, strong suppression). Reserved for experienced users."
lang: en
dateModified: 2026-05-25
canonical: https://anaprotokol.com/en/molecule/yk11
---

# YK-11

⚠️ YK-11 is classified as a SARM but also acts partially as a myostatin inhibitor. Much closer to steroids than classic SARMs in terms of effects AND risks (hepatotoxic, strong suppression). Reserved for experienced users.

**Catégorie** : SARM
**Voie d'administration** : Oral
**Demi-vie** : 12 heures
**Détection** : 4–6 semaines
**Aromatisation** : Non
**Progestine** : Non
**Hépatotoxique** : Oui
**PCT requise** : Oui

**Autres noms** : YK11

## Effets
- Myostatin inhibitor (potentially)
- Significant muscle gains
- Strength
- Effects close to steroids

## Effets secondaires
- Hepatotoxicity (C-17 alkylated)
- Significant HPTA suppression
- Joint pain
- Acne
- Aggression

## Suppléments de soutien
- TUDCA
- NAC
- Omega-3
- AI if needed

## Synergies
- MK-677
- LGD-4033
- RAD-140

## À éviter
- Beginners
- Without TUDCA
- Cycles > 8 weeks

## Dosage masculin
- Débutant : 5 mg/j
- Intermédiaire : 10–15 mg/j
- Avancé : 15–20 mg/j

## Dosage féminin
2.5-5 mg/day (virilization risk)

**Fréquence** : 2× / day