Nutrition and supplement support
Timing can matter more than adding products
Caffeine late in the day can interfere with sleep even when someone feels accustomed to it. Alcohol may make falling asleep easier while worsening sleep continuity. Heavy late meals can aggravate reflux. A stable meal pattern and attention to these triggers may be more useful than adding another supplement.
Magnesium and melatonin
Magnesium is not a universal insomnia treatment and can cause diarrhoea; kidney disease requires particular caution. Melatonin is used for specific timing problems, not as a mandatory DSIP companion. Combining products makes it harder to know what caused morning grogginess or a change in sleep.
Iron and B12
Restless legs and fatigue can have nutritional contributors, but iron should be guided by assessment and testing rather than taken indiscriminately. B12 matters when intake or absorption is inadequate. Neither is an established way to increase DSIP's effectiveness.
Recovery nutrition
Adequate food and protein support recovery, especially with regular training. Going to bed hungry after severe calorie restriction can undermine the routine someone is trying to improve. A simple food and sleep diary can identify patterns without turning every poor night into a supplement deficiency.