TRT Dosage Guide: Finding Your Optimal Testosterone Protocol

There is no "standard" TRT dose — only your optimal dose, determined by your baseline levels, body composition, metabolism, SHBG levels, and symptomatic response. The goal is to find the minimum effective dose that resolves your symptoms and places your total testosterone in the 600–1,000 ng/dL range with acceptable estradiol and hematocrit levels.

This guide covers starting doses by delivery method, the adjustment timeline, injection frequency optimization, and the most common dosing mistakes that lead to unnecessary side effects. Telehealth FX clinicians personalize your protocol and adjust based on regular lab monitoring. See our pricing breakdown for plan details.

Starting Doses by Delivery Method

The Dose Adjustment Timeline

Testosterone cypionate reaches steady-state serum levels after approximately 4–5 half-lives — roughly 5–6 weeks. This means blood work drawn before 6 weeks does not accurately reflect your true steady-state levels. The standard optimization protocol:

1. Week 0: Baseline labs drawn. Starting dose prescribed (typically 100mg/week cypionate).
2. Week 6–8: First follow-up labs (trough draw — morning of injection day, before injecting). Assess total T, free T, E2, hematocrit, PSA.
3. Week 12–16: Second follow-up. Dose adjusted if levels aren't in the 600–1,000 ng/dL range or if side effects are present.
4. Every 6 months: Maintenance labs. Most men are fully optimized by month 3–4.

Injection Frequency: Why 2x/Week Is Superior

The old-school protocol of 200mg every 2 weeks creates dramatic peaks and valleys — high testosterone for days 1–5 followed by subtherapeutic levels for days 8–14. This causes mood swings, energy crashes, and elevated estradiol during the peak phase. Modern protocols split the dose:

• 100mg 1x/week: Good serum stability for most men
• 50mg 2x/week: Superior stability, lower E2 conversion, fewer side effects — the gold standard
• Daily micro-dosing (14–20mg/day): The flattest possible curve — best for men sensitive to hormonal fluctuation

If you experience mood swings or energy dips mid-week on a 1x/week protocol, switching to 2x/week at the same total weekly dose often resolves the issue entirely. See delivery method comparison for more on injection protocols.

Signs You Need a Dose Change

• Dose too low: Persistent fatigue, low libido, no improvement in mood or body composition after 8+ weeks. Trough total T below 500 ng/dL.
• Dose too high: Acne flares, oily skin, anxiety/irritability, elevated hematocrit (>52%), water retention, gynecomastia tenderness. E2 above 50 pg/mL.
• Wrong frequency: Energy crashes mid-week, emotional volatility 3–4 days after injection, high peaks on lab work. Switch to 2x/week.

Common Dosing Mistakes

1. Starting too high: Beginning at 200mg/week increases side effects. Start at 100mg and titrate up based on labs.
2. Chasing a number: The goal is symptom resolution, not a specific lab number. Some men feel optimal at 650 ng/dL; others need 850+.
3. Ignoring SHBG: Men with high SHBG may need higher total T to achieve adequate free T. Men with low SHBG may aromatize excessively at moderate doses.
4. No trough monitoring: Always draw labs at trough (morning of injection day) for accurate assessment.

Frequently Asked Questions

What's the maximum safe TRT dose?

The Endocrine Society recommends targeting 400–700 ng/dL (mid-range). Most men achieve this with 100–160mg/week of testosterone cypionate. Doses above 200mg/week start entering supraphysiological territory and significantly increase side effect risk.

Should I take an aromatase inhibitor (AI) with TRT?

Only if your estradiol is consistently elevated (>50 pg/mL with symptoms). The modern approach is to first optimize injection frequency (2x/week or daily) and dose before adding an AI. Anastrozole at 0.25–0.5mg 2x/week is the standard if needed. Many men never need an AI.

Do I need HCG with my TRT?

Not always — but it helps prevent testicular atrophy and preserves fertility. See our complete HCG guide. Enclomiphene is an oral alternative.