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Starting at 250-300mcg regardless of body weight, then adjusting based on response, often works better than jumping to weight-based higher doses

An empty stomach at the time of injection (no food for two hours prior, carbohydrates especially) measurably increases the magnitude of the GH response

Luckily, my GP was much better informed - and where a referral proved useless, would redirect me elsewhere

Here is a more specific review of those issues

Nature Reviews Drug Discovery, 19 (4), 277-289

Linear ordered collagen scaffolds loaded with collagen-binding brain-derived neurotrophic factor improve the recovery of spinal cord injury in rats