25/03/2026
One of the biggest mistakes people make with melatonin? Starting with the wrong dose.
You've probably heard stories: someone took melatonin and felt groggy. Someone else felt nothing. Another became dependent. These aren't melatonin failures—they're dosing failures.
Here's the truth: melatonin dosing in the UK is different from the US. UK prescriptions are typically lower, more physiological doses. Why? Because melatonin works best when it mimics your body's natural rhythm.
**The dosing principles:**
🌙 **Start low** – Most people respond well to 0.5–2mg (much lower than online supplements).
🌙 **Timing matters** – Take it 30–60 minutes before bed when your body naturally prepares for sleep.
🌙 **Consistency is key** – Same time every night helps reset your circadian rhythm.
🌙 **Individual variation** – Age, metabolism, medications, and your condition all matter.
🌙 **Patience** – It takes 3–7 days to see effects as your circadian rhythm resets. It's not a knockout pill.
The problem? Most people start too high (and feel terrible) or give up too quickly (before their body responds).
That's why working with a healthcare provider who understands melatonin dosing is crucial. We assess your situation, start you at the right dose, monitor your response, and adjust. No guessing. No trial and error. Just evidence-based dosing tailored to you.
Ready to get your melatonin dosing right? Book a free consultation with our team.
https://medicalmojo.co.uk/a-patients-guide-to-melatonin-dosage-for-sleep-in-the-uk/