When and How Should Vitamins and Minerals Be Taken?

When humankind transitioned to settled life and began farming, things did not progress as smoothly as expected. With the arrival of the technological and industrial revolutions, we caused considerable damage to our soil.

“Let’s increase productivity and get five times the return,” “There are more people, so this amount of food is not enough,” and “Let’s use more pesticides because there is no other way to increase yields.” As this mindset became widespread, the soil grew increasingly polluted. Productivity increased, but the nutritional value of the crops declined. Instead of being rich sources of vitamins and minerals, the foods offered to us by Mother Nature became increasingly exposed to pesticides.

Over time, we have struggled to maintain the vital levels our bodies need. Our immune resilience has declined, chronic health conditions have become more common, and our quality of life has been adversely affected.

To improve our blood test results and support our health, we began taking vitamin and mineral supplements. We started with one, then wanted to add another. We were told, “Taking these together improves bioavailability,” so we added yet another…

But how should these supplements actually be taken?

This is where pharmacists—your most accessible healthcare advisers—come in. I would like to share some important recommendations to help you incorporate supplements into your daily routine and get the greatest possible benefit from them.

Vitamin D

How to take it: Vitamin D in tablet or capsule form may be taken with breakfast. Fat-soluble vitamins are generally absorbed more effectively when taken with foods containing fat.

Spray and drop forms: These products are usually dissolved in carrier oils such as olive oil, pumpkin seed oil, avocado oil, or coconut oil. Therefore, consuming an additional source of fat alongside them may not be necessary.

I do not recommend taking vitamin D at night. In some people, it may create a feeling of increased energy and affect sleep.

Magnesium

Did you know that your magnesium status should also be assessed if your vitamin D level is low and you are taking a high-dose vitamin D supplement to raise it?

Magnesium plays an important role in the metabolic processes that activate vitamin D in the body. The balance between vitamin D, magnesium, and parathyroid hormone is interconnected.

When to Take Different Forms of Magnesium

Magnesium Citrate: It may be taken approximately two hours after a meal or on a full stomach.

Magnesium Glycinate: It may be taken on an empty stomach or approximately two hours after a meal. It is often preferred at night before bedtime.

Magnesium Malate: As it may feel energising, it is generally preferable in the morning or afternoon, approximately two hours after a meal.

Magnesium Taurate: It may be taken approximately two hours after a meal. It is often preferred at night before bedtime.

Magnesium Threonate: It may be taken approximately two hours after a meal, either in the morning or before bedtime.

If your supplement contains a combination of different magnesium forms, you may take it in the morning or evening, either on an empty stomach or approximately two hours after a meal, depending on your digestive sensitivity.

If you are starting magnesium to address a specific concern—such as constipation, indigestion, anxiety, poor sleep, low energy, blood pressure concerns, or forgetfulness—it is important to mention this to your pharmacist. Your pharmacist can help guide you towards the form of magnesium most appropriate for your needs.

Iron

Whether you use sucrosomial, liposomal, chelated, or microencapsulated iron, we generally recommend leaving approximately two hours between taking the supplement and eating. This may help support bioavailability and allow you to gain greater benefit from the product.

If you take iron, you should also pay attention to the timing of supplements containing zinc, magnesium, calcium, and copper. To help preserve the absorption of each mineral, we recommend leaving at least two hours between them.

The advanced formulations and innovative technologies mentioned above may minimise interactions with food. Even so, allowing sufficient time between products and meals may help you benefit more fully from your supplements.

Vitamin B12

If you use vitamin B12 in a sublingual form, it generally does not matter whether you take it on an empty or full stomach. These products are absorbed through the tissues inside the mouth—a route known as buccal absorption. I am particularly fond of products in this form.

Because this route largely bypasses the effects of stomach acid and the intestinal environment, it may help some individuals reach their target blood levels more efficiently.

If you use a tablet or capsule, taking it on an empty stomach and during the daytime may be preferable. In some people, it may create a feeling of increased energy and affect sleep if taken at night.

Vitamin C

If you take an iron supplement that does not already contain vitamin C, taking vitamin C alongside it may be recommended to support iron absorption.

Effervescent form: If you have a sensitive stomach, it may be taken after food. If you do not experience sensitivity, it may be taken on an empty stomach. Allow the tablet to dissolve completely in water and wait for the bubbles to settle before drinking it.

Ester form: This may be preferable for people with sensitive stomachs. Its specialised formulation may be gentler on the stomach and can be taken on an empty stomach.

Liposomal form: This is another option that may be suitable for people with digestive sensitivity. It can be taken on an empty stomach.

I recommend taking vitamin C in the morning or afternoon. Before, during, and after an illness, it may help a person feel more energised.

A Final Note…

I have shared some of the key points to consider when using the most commonly taken vitamins and minerals.

As a pharmacist who genuinely loves the profession and is committed to continued learning, I would like to offer one valuable piece of advice: Always seek professional guidance when choosing vitamins and minerals.

A supplement that works well for your neighbour or friend may not be suitable for you. Likewise, not every newly launched “longevity” product is necessary for your individual needs. Your pharmacist and the healthcare professional overseeing your care can provide the most appropriate guidance on formulation, dosage, timing, and potential interactions with other products.

Stay healthy!

This article is intended for general informational purposes only and does not replace medical diagnosis or treatment. If you have a chronic health condition, take regular medication, are pregnant, or are breastfeeding, consult your doctor or pharmacist before using any supplement.