Below is a practical "rule‑of‑thumb" for how long it takes each of the most common substances—cocaine (and its primary
metabolite benzoylecgonine), heroin (and its main metabolites
6‑acetylmorphine, morphine, and codeine)—to be
detectable in the three most widely used drug‑test matrices:

Substance Matrix Typical detection window What it means for a test

Cocaine / Benzoylecgonine (co

Below is a concise "quick‑reference" guide that you might keep in a notebook or on your
phone. It’s organized by the main points you asked for—key
considerations, pros/cons, and a short checklist of
what to do before making a decision.

> **⚠️ Disclaimer** – This information is for general educational purposes only.

It does not replace professional medical advice, legal counsel, or financial planning.
Always consult a qualified

No – a realistic gain for a 32‑year‑old man under optimal training and nutrition is
about 0.25–0.5 kg of muscle per month, not 2–3 kg.