HGH Dosage Guide: How Much Growth Hormone to Use (2026)

HGH dosing is not analogous to anabolic steroid dosing. There are no defined “beginner” and “advanced” doses in the same sense — the optimal dose is determined by the goal (fat loss vs body recomposition vs combined cycle), individual IGF-1 response, and tolerance of side effects such as water retention and insulin resistance. This guide covers evidence-informed dose ranges, administration protocols, and how HGH integrates into steroid cycles.

HGH Dosage Reference Table

Goal	Daily Dose	Minimum Duration	Notes
Anti-ageing / wellness	1–2 IU/day	3–6 months	Improved sleep, skin, recovery; minimal sides
Fat loss / body recomposition	2–4 IU/day	3–6 months	Significant fat mobilisation; mild water retention
Muscle gain (with AAS)	4–6 IU/day	4–6 months	Pronounced IGF-1 elevation; water retention managed with AI
Competitive bodybuilding (advanced)	6–12 IU/day	5–6 months+	High insulin resistance risk; requires glucose monitoring

IU vs mg: HGH is dosed in International Units (IU). 1 IU of somatropin equals approximately 0.33 mg of protein. Most HGH vials are 10 IU (approximately 3.33 mg). Reconstitute with bacteriostatic water — not regular sterile water — for multi-dose vials.

Injection Timing: When to Inject HGH

The timing of HGH injection significantly affects its benefits:

Morning Protocol (Fat Loss Priority)

Inject the full daily dose upon waking, before eating. At this point, blood glucose and insulin are at their nadir, maximising HGH-stimulated lipolysis. The exogenous GH pulse mimics the largest natural GH pulse and acts on already-elevated free fatty acid availability.

Pre-Sleep Protocol (Muscle Recovery Priority)

Inject 30–60 minutes before sleep. HGH works synergistically with endogenous GH release during slow-wave sleep. Combined exogenous + endogenous GH creates the highest overnight GH exposure. Best for recovery and muscle protein synthesis. Note: avoid eating carbohydrates 2 hours before sleep injection, as insulin release suppresses GH signalling.

Split Protocol (4+ IU/day)

At doses of 4 IU/day and above, split into two injections: one in the morning (fasted) and one pre-training or pre-sleep. This maintains more consistent receptor stimulation and reduces the side effects (carpal tunnel, water retention) associated with large single doses.

Beginner HGH Protocol (Body Recomposition)

Month	HGH Dose	Timing	Expected Outcomes
1	2 IU/day	Pre-sleep	Improved sleep, early recovery benefits
2–3	2–3 IU/day	Pre-sleep or AM fasted	Visible fat reduction, improved body composition
4–6	3–4 IU/day	Split AM + PM	Continued recomposition; connective tissue benefits

Intermediate HGH + Testosterone Cycle

Weeks	Testosterone Enanthate	HGH	AI	Notes
1–16	500 mg/wk	4 IU/day	Aromasin 12.5 mg EOD	HGH split AM + PM; Test injected twice weekly
PCT (wk 18–22)	Stop week 16	Continue if desired	Nolvadex 40/40/20/20	HGH can continue through PCT; does not suppress HPG axis

See our testosterone enanthate vs cypionate guide for base compound selection, and our PCT guide for full recovery protocols. Browse HGH products.

Advanced HGH + AAS Bulking Cycle

Weeks	Test E	HGH	Deca	Oral Kickstart
1–6	600 mg/wk	6 IU/day	300 mg/wk	Dianabol 50 mg/day
7–20	600 mg/wk	6 IU/day	300 mg/wk	Discontinue oral

HGH and Insulin Resistance

HGH is counter-regulatory to insulin — it raises blood glucose by reducing insulin sensitivity. At doses above 4 IU/day, insulin resistance becomes a significant concern. Management strategies:

• Inject HGH away from carbohydrate meals (minimum 2 hours)
• Monitor fasting blood glucose; target <5.6 mmol/L
• Consider HbA1c testing at baseline and every 3 months on cycle
• At 6+ IU/day, some advanced users use exogenous insulin post-workout (NOT recommended without medical supervision — hypoglycaemia risk is life-threatening)

Side Effect Management Overview

For a full clinical breakdown of HGH side effects, see our HGH side effects guide. Brief overview of the key manageable effects:

• Carpal tunnel syndrome: Common at 4+ IU/day; typically resolves with dose reduction. Can be managed by reducing dose or taking a break.
• Water retention: Dose-dependent; usually resolves within 4–6 weeks as the body adjusts or with dose reduction.
• Morning lethargy: Some users experience fatigue when HGH is injected pre-sleep; switch to AM injection if this occurs.

Reconstitution and Storage

• Reconstitute lyophilised HGH powder with bacteriostatic water (1–2 ml per vial depending on concentration desired)
• Add water slowly down the side of the vial; do not shake (shakes can denature the protein). Gently swirl.
• Reconstituted HGH: refrigerate at 2–8°C, use within 28 days
• Lyophilised (un-reconstituted) powder: refrigerate; some products stable for longer periods at room temperature before opening — check manufacturer specifications
• Draw with an insulin syringe (29–31 gauge); inject subcutaneously into abdominal fat

Frequently Asked Questions

How many IU per day should a beginner use?

2 IU/day is the standard starting point. This dose produces meaningful fat loss and recovery benefits with minimal side effects. Increase to 3–4 IU/day after 4–8 weeks if tolerating well. There is no benefit to starting higher — the body requires time to upregulate GH receptors and IGF-1 production.

Can you use HGH without steroids?

Yes. HGH is effective as a standalone protocol for fat loss, recovery enhancement, and body recomposition, particularly for users not wanting to use anabolic steroids. The results are slower and less dramatic than combined protocols, but meaningful over 4–6 months of consistent use.

Does HGH suppress natural growth hormone production?

Yes, through negative feedback on the pituitary. Unlike testosterone, however, HGH suppression is more rapidly reversible — endogenous GH production typically recovers within 2–4 weeks of cessation. PCT is not required in the same way as post-steroid cycling. Some users continue HGH through their anabolic steroid PCT period.