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Timing can significantly impact supplement absorption and effectiveness. Research shows optimal timing varies by type:
- Fat-soluble vitamins (A, D, E, K): Take with meals containing healthy fats
- Iron: Take on empty stomach, avoid with calcium
- B-vitamins: Morning consumption for energy
- Magnesium: Evening intake for relaxation
Additionally, space out calcium and iron supplements by at least 2 hours, as they compete for absorption. Probiotics are generally best taken on an empty stomach, while protein supplements are most effective post-workout.
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Last Updated: August 1, 2025
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