Andarine (S4): A Tracking Guide for an Older Cutting SARM

Andarine, known as S4, is one of the older selective androgen receptor modulators (SARMs). It is typically used in cutting phases for muscle retention while losing fat. Its most distinctive feature is a reversible vision side effect - a yellow tint to vision and difficulty adjusting to darkness or night vision.

This is an educational tracking guide, not medical advice or a recommendation. Andarine is an unapproved research chemical, not an approved medicine, and consumer products are frequently mislabeled.

What it is

• An older non-steroidal androgen receptor modulator
• Favored for cutting and muscle retention rather than mass
• Notable for a temporary, dose-related effect on vision

Typical protocol shape

• Taken orally, often split through the day due to a short half-life
• Doses and durations commonly reported in research literature; this guide does not prescribe one
• Usually run during a fat-loss phase alongside a calorie deficit

What to track daily

• Any yellow tint to vision or trouble seeing in low light
• Bodyweight and training performance
• Libido, mood, and energy

What to track weekly

• Waist and bodyweight trend
• Strength retention during the deficit
• Any persistence of vision changes

Bloodwork worth doing

• Total and free testosterone, LH, and FSH before, during, and after
• A liver panel (ALT, AST)
• A lipid panel, since HDL commonly falls

Realistic expectations

• Useful for holding muscle while cutting, not for dramatic growth
• The vision effect is reported to reverse after stopping, but it can be unsettling
• Suppression still occurs, so recovery planning applies

Safety notes

The signature andarine effect is a reversible yellow vision tint and impaired night vision; if it appears, it is a signal the compound is having a dose-dependent effect, and it should reverse on discontinuation. Like other SARMs, it suppresses natural testosterone, lowers HDL, and can stress the liver. As an unregulated product, mislabeling and contamination are real risks. Bloodwork and consideration of post-cycle therapy are the sensible baseline.

Peptid AI is an educational and self-tracking tool. Nothing in this post is medical advice. Doses mentioned reflect what is commonly reported in research literature — they are not recommendations. Always consult a qualified physician before starting, changing, or stopping any protocol.