Should You Take Vitamins in the Morning or at Night?
The timing of vitamin intake can affect absorption and side effects. Here is a guide to when you should take the most common vitamins and minerals.
Not All Vitamins Are the Same
Vitamins fall into two categories: fat-soluble and water-soluble. This distinction affects when and how you should take them for the best absorption and fewest side effects.
Fat-Soluble Vitamins: Take With a Meal
Vitamins A, D, E, and K are fat-soluble, meaning they need dietary fat to be absorbed properly. Take these vitamins with your largest meal of the day, which typically contains the most fat. Without fat present, a significant portion of the vitamin passes through your digestive system without being absorbed.
Water-Soluble Vitamins: Morning on an Empty Stomach
Vitamin C and the B vitamins are water-soluble and can be taken on an empty stomach. Many people prefer taking these in the morning. B vitamins, in particular, support energy metabolism, so taking them early in the day makes sense. Some people report that B vitamins taken late in the day can interfere with sleep.
Specific Recommendations
- Vitamin D: with the largest meal (breakfast or lunch preferred, as some people report sleep disruption with evening doses)
- Iron: on an empty stomach with vitamin C for better absorption; avoid taking with calcium, coffee, or tea
- Calcium: split into two doses if taking more than 500mg daily, as the body absorbs smaller amounts better
- Magnesium: in the evening, as it can promote relaxation and better sleep
- Probiotics: typically first thing in the morning, 30 minutes before eating
Avoiding Interactions Between Supplements
Some vitamins and minerals compete for absorption. Calcium and iron, for example, should be taken at least two hours apart. Zinc and copper also interfere with each other when taken simultaneously. If you take multiple supplements, spacing them throughout the day can improve overall absorption.
Track Your Supplement Schedule
Add your vitamins and supplements to MedRemind alongside your prescription medications. The app can remind you at the optimal time for each supplement, helping you get the most benefit from everything you take.
This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or pharmacist with any questions you may have regarding a medical condition or medication.
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