10.1200/jco.2017.73.0242 94 SuW.FengS.ChenX.YangX.MaoR.GuoC.et al
Its not just about clicking a button and getting a package
For example: Bacopa monnieri (an Ayurvedic herb) has been reported to slightly improve memory acquisition and the speed of attention in chronic use

Your diabetes team may recommend: Checking blood glucose before bed and upon waking Adjusting doses of other diabetes medications if hypoglycaemia occurs do not adjust insulin or sulphonylurea doses without personalised guidance from your healthcare team Having a small, appropriate bedtime snack if advised by your healthcare team Sleep hygiene practices remain important, as recommended by the NHS and NICE Clinical Knowledge Summaries: [13] Maintain a regular sleep schedule, even at weekends Create a cool, dark, quiet sleeping environment Establish a relaxing bedtime routine Limit screen time for at least one hour before bed Consider relaxation techniques such as deep breathing or progressive muscle relaxation If you have symptoms of obstructive sleep apnoea (snoring, witnessed breathing pauses, excessive daytime sleepiness), discuss this with your GP as you may need referral for assessment

So, its important not to take high-strength Vitamin D supplements without checking with a healthcare provider first. Iron Iron is extremely important for our bodies to function