---
title: "Andarine"
description: "S4 delivers remarkable hardness and vascularity but its effect on vision (yellow/green tint, especially at night) is its main drawback. The visual effect is reversible upon discontinuation. Split doses 2×/day due to the short half-life."
lang: en
dateModified: 2026-05-25
canonical: https://anaprotokol.com/en/molecule/s4-andarine
---

# Andarine

S4 delivers remarkable hardness and vascularity but its effect on vision (yellow/green tint, especially at night) is its main drawback. The visual effect is reversible upon discontinuation. Split doses 2×/day due to the short half-life.

**Catégorie** : SARM
**Voie d'administration** : Oral
**Demi-vie** : 3–4 heures
**Détection** : 6–8 semaines
**Ratio anabolique** : 100
**Ratio androgénique** : 33
**Aromatisation** : Non
**Progestine** : Non
**Hépatotoxique** : Non
**PCT requise** : Oui

**Autres noms** : Andarine, S-4

## Effets
- Significant hardness
- Vascularity
- Cutting
- Muscle preservation

## Effets secondaires
- ⚠️ Yellow/green vision (binds to eye receptors)
- Reduced night vision
- Moderate HPTA shutdown
- Mild acne

## Suppléments de soutien
- Omega-3
- Zinc
- Preventive TUDCA

## Synergies
- Cardarine (cutting)
- Ostarine
- MK-677

## À éviter
- Night drivers (visual issues)
- Doses > 50 mg/day (vision strongly affected)
- Cycles > 8 weeks

## Dosage masculin
- Débutant : 25 mg/j
- Intermédiaire : 50 mg/j
- Avancé : 75 mg/j

## Dosage féminin
12.5-25 mg/day

**Fréquence** : 2× / day (short half-life)