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250-500mg daily (varies by form)
Morning or with meals, Alpha-GPC before cognitive tasks
Alpha-GPC or CDP-Choline (Citicoline)
2000-4000 IU daily
Morning with breakfast
D3 (cholecalciferol) softgel or liquid
2-4 weeks
4-8 weeks
1-2 weeks
4-8 weeks
4-8 weeks
2-4 weeks
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