Morning Or Night? When Is The Best Time To Take Magnesium?

In this article: 

• What magnesium does: Supports muscle function, nerve conduction and energy production.
• Morning vs night: Both can work. Timing depends on lifestyle, tolerance and goals.
• Night-time use: Support muscle relaxation as part of a wind-down routine.
• Morning use: Can suit those focused on daytime energy production or muscle support.

You may have heard about taking magnesium to help support a healthy stress response in the body¹, but that’s not all it does. Involved in almost all major processes in our body, it plays an important role in supporting bone, muscle and nervous system health¹. However, some wonder how to fit it into their daily routine and whether you should take magnesium morning or night.

Magnesium plays a crucial role in over 300 enzymatic reactions in our body, including energy production and nerve function². Knowing how to use it and whether to take magnesium morning or night can have a big impact on your overall wellbeing. This guide will help you learn if a morning or nighttime routine better suits your goals and how your body responds to magnesium. 

The quick rundown on magnesium

Magnesium is an essential mineral involved in many everyday processes in the body, including supporting muscle function, nerve signalling and bone health. It also plays an important role in supporting heart health³.

When it comes to sleep, Magnesium can also influence how nerves communicate and how muscles relax, helping your body enter a calm state and wind down⁴.

How to take magnesium 

The type of magnesium you choose can influence how well it’s absorbed and used by the body, as different forms vary in their solubility and bioavailability². A range of different oral supplements are available¹, including gummies, tablets and powders. 

Some people prefer to take magnesium with food, while others choose a format that fits easily into their daily routine. As individual needs can vary, it’s best to follow product directions and speak with a healthcare professional if you’re unsure which option is right for you.

When is the best time to take magnesium?

What time of day to take magnesium often comes down to your routine and how your body responds to it. For those wanting to take it at night, a magnesium supplement can be part of their wind-down or bedtime routine. Others prefer to take magnesium around their workout for its muscle health support³. As magnesium is linked to supporting energy production², however, some people prefer to avoid taking it at night. 

Let’s take a closer look at the differences. 

Taking magnesium at night 

There can be a range of benefits to taking magnesium at night. Known for its supporting role in nervous system health and function⁵. 

In general, having a night time routine can help your body know when it’s time to sleep. This can include⁶: 

• Sticking to a sleep routine by going to bed and waking up at the same time each day. 
• Creating good sleep habits and avoiding using screens in your bed 
• Finding a relaxation technique, such as gentle stretching or meditation, before sleep.
• Ensuring your room is quiet, dark and the right temperature.
• Avoiding alcohol, coffee and cigarettes before sleep. 

What is the best time to take magnesium for sleep?

The calmer you feel before bed, the easier it can be to fall and stay asleep. Taking a night time magnesium supplement as part of your wind-down routine may help start to slow down the mind and support with muscle relaxation⁷. The key to finding the best timing is all down to consistency and ensuring you choose a time that you’ll remember. 

Taking magnesium in the morning 

With this in mind, can you take magnesium in the morning? The quick answer is yes, especially if it suits your lifestyle and tolerance better. Magnesium is involved in the supporting body’s energy-production⁸ and because of this, some people prefer taking magnesium in the morning to support energy production and muscle function as part of their daily routine.

Some people find it easier to take all their vitamins and supplements at once, which may be in the morning.

Does magnesium make you sleepy during the day?

Keep in mind, magnesium may have some benefits to help you wind down at the end of the night to help you sleep by supporting muscle relaxation^1,5,7, but it is not a sedative. Keep in mind that while taking a magnesium supplement, you won’t necessarily feel sleepy like you would with a dedicated sleep medication. 

Signs your magnesium timing might need adjusting

Whether you take magnesium in the morning or at night comes down to your personal preference. However, there are a few signs your timing might not be quite right:

• Forgetting to take it regularly because it doesn’t fit into your routine. 
• Feeling over relaxed or very energetic throughout the day

Making small adjustments to timing or format can help magnesium fit more comfortably into your day.

How to choose the best time of day to take magnesium

The best time of the day to take magnesium will vary person to person, and will depend on your lifestyle, goals and how your body responds. You may prefer to take it in the evening as part of your bedtime routine to help you unwind or as part of your morning routine to support your energy throughout the day. Whether you plan to take magnesium at night or during the day, always consult a doctor before changing your supplement routine.

There are plenty of other potential benefits of magnesium. Check out the Swisse Wellness Hub to explore how it may be able to help with muscle, bone and nervous system health support and more.

References:

1. Zhang Y, Chen C, Lu L, Knutson KL, Carnethon MR, Fly AD, Luo J, Haas DM, Shikany JM, Kahe K. “Association of magnesium intake with sleep duration and sleep quality: findings from the CARDIA study.” Sleep. 2022;45(4):zsab276. Available at: https://academic.oup.com/sleep/article/45/4/zsab276/6432454
2. Cepeda V, Ródenas-Munar M, García S, Bouzas C, Tur JA. “Unlocking the power of magnesium: a systematic review and meta-analysis regarding its role in oxidative stress and inflammation.” Antioxidants (Basel). 2025;14(6):740. https://doi.org/10.3390/antiox14060740
3. Healthdirect Australia. “Magnesium and your health.” Available at: https://www.healthdirect.gov.au/magnesium
4. Healthdirect Australia. “Sleep.” Available at: https://www.healthdirect.gov.au/sleep
5. Pickering G, Mazur A, Trousselard M, Bienkowski P, Yaltsewa N, Amessou M, Noah L, Pouteau E. “Magnesium status and stress: the vicious circle concept revisited.” Nutrients. 2020;12(12):3672. https://doi.org/10.3390/nu12123672
6. Hausenblas HA, Lynch T, Hooper S, Shrestha A, Rosendale D, Gu J. “Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: a randomized controlled trial.” Sleep Medicine: X. 2024;8:100121. https://doi.org/10.1016/j.sleepx.2024.100121
7. Barbagallo M, Veronese N, Dominguez LJ. “Magnesium—an ion with multiple invaluable actions, often insufficiently supplied: from in vitro to clinical research.” Nutrients. 2023;15(14):3135. https://doi.org/10.3390/nu15143135