S4 (Andarine) Driada Medical EU

S4 (Andarine) – Driada Medical EU

The product details S4, commonly known as Andarine. This compound is a Selective Androgen Receptor Modulator (SARM) often used illicitly in bodybuilding for its specific effects on muscle hardening and cutting.

Note on Consistency: The product packaging information is inconsistent: it lists a concentration of 25 mg/tab in the first line and 10 mg per Tablet in the third line. The summary uses the most frequently stated concentration in the first line (25 mg/tab) but notes the inconsistency.

Mechanism and Key Benefits

Andarine is an orally active, non-steroidal partial agonist of the Androgen Receptor (AR).¹ It was developed to treat conditions like osteoporosis and muscle wasting.

• Targeted Anabolism: S4 promotes lean muscle growth and is known for its ability to increase muscle hardness and density by binding strongly to ARs in muscle and bone tissue.²

• Fat Loss: It often enhances fat loss, partly by redirecting nutrient partitioning and potentially increasing oxidation, making it highly favored for cutting cycles.

• Preservation: Like Ostarine (MK-2866), it is effective at preserving muscle mass while the user is in a caloric deficit.

• Prostate Selectivity: Research suggests that S4 has a minimal effect on the prostate gland compared to traditional androgens like DHT.³

Usage and Dosage Guidelines (Common Illicit Use)

• Dosage Range: Common illicit dosages typically range from 25 mg to 50 mg per day.

• Frequency: Some users split the dose into 2–3 administrations daily due to its short half-life (shorter than LGD-4033 or Ostarine).

• Cycle Duration: Generally used for 6–8 weeks.

• Bodybuilding Role: Primarily used for cutting, drying out, and body recomposition.

Side Effects and Risks

S4 is unique among SARMs for its characteristic side effect, which was a major reason for the discontinuation of its clinical trials.⁴

• Visual Disturbances (Unique Risk): The most common side effect reported anecdotally (and noted in early clinical trials) involves visual disturbances, such as a yellow or green tint to vision and difficulty adjusting vision in low light or darkness (night vision blindness).⁵ These effects are generally reversible upon cessation or dose reduction.

• Testosterone Suppression: Like most SARMs, S4 causes suppression of natural testosterone production in a dose-dependent manner.

  • PCT Required: Post-Cycle Therapy (PCT) with a SERM is usually necessary after an S4 cycle to restore natural hormone function.

• General Health Risks: The FDA has warned that SARMs, including Andarine, are associated with risks such as liver injury and increased risk of heart attack or stroke.⁶

Frequently Asked Questions (FAQ)

1. What is the most unique and common side effect associated with Andarine (S4)?

The most unique and common side effect is visual disturbance, specifically a yellow or green tint to vision and issues with night vision, which prompted the halting of its original clinical development.⁷

2. Why is Andarine popular for cutting cycles?

Andarine is popular for cutting because it helps users preserve lean muscle mass while in a caloric deficit and promotes a visually harder, drier muscle appearance.

3. Does S4 (Andarine) typically require Post-Cycle Therapy (PCT)?

Yes. S4 causes suppression of natural testosterone, making a PCT protocol with SERMs necessary to help the body recover endogenous hormone production.

4. Why might S4 be injected multiple times per day rather than once?

S4 has a relatively short half-life. To maintain stable blood levels and maximize its effect, users often choose to split the daily dose into 2 or 3 separate administrations.