
How long does it take for testosterone to work? A clinical timeline for results

Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Nov 29, 2025 · 13 min read
Testosterone therapy can lift libido, energy, and strength — but not overnight. Here is a realistic, evidence-based timeline for when men actually start to feel the benefits. “The most common question I hear is, ‘How long does it take for testosterone to work?’ The honest answer is that some changes show up in a few ...