Would like to share this - hope it may help others...After about 8 years if disturbed sleep- waking up every 2-3 hours or not being able to sleep until 3 or 4 am, the last month I have actually been able to sleep 5-6 hours and a few times even 7 hours- it had been such a relief.
This change coincides with me starting B complex supplements and magnesium. Hope I've hit on the key for me- may be worth a try for others