PlanYourVitamins.com

When to take
Manganese

Manganese is an essential mineral that plays a key role in brain health, bone health and nervous system function, as well as fighting inflammation.

What is manganese good for?

Short answer: Manganese is studied for bone health and joint health.
Not to be confused with its more popular cousin magnesium, manganese is one of several essential minerals that your body needs in order to function properly, although it is only required in trace amounts. Specifically, your body needs manganese for brain function and for the nervous system, as well as for ensuring correct enzyme function.

Role in bone health

Manganese is also important for bone growth and bone maintenance, and it works in conjunction with calcium, zinc and copper to contribute toward bone density, something that becomes increasingly important as we age.

Inflammation

Manganese also forms part of a powerful antioxidant called superoxide dismutase, or SOD for short, which plays an important role in reducing inflammation, and it is studied in several inflammatory conditions.

Role in thyroid function

It also plays a role in the production of a hormone called thyroxine, which your thyroid gland needs in order to function properly. This means that a deficiency in manganese could result in a condition known as hypothyroidism, which in turn could lead to disrupted metabolism, weight gain, and further hormonal imbalances.

Role in blood sugar research

Manganese has also been studied in relation to blood sugar levels, and in some animal studies, a deficiency of manganese has been associated with glucose intolerance similar to that which occurs with diabetes in humans. Although results from human studies are mixed, research does show that people that suffer from diabetes do have lower manganese blood levels.

When should I take manganese?

Short answer: Manganese supplements are best taken with any meal.

There does not appear to be a consensus on the best time of day for taking manganese, however most supplement manufacturers suggest taking manganese with a meal for optimal absorption.

What else pairs well with manganese?

Short answer: While not found to provide additional benefits when taken at the exact same time, research has shown that manganese pairs well with chondroitin, glucosamine and serrapeptase.

Also taken with glucosamine & chondroitin, for joint health

Recent research has looked at whether manganese combined with glucosamine and chondroitin can reduce pain associated with osteoarthritis, a condition characterized by the degradation of the cartilage in our joints.

One study that involved 93 people suffering from osteoarthritis found that 52% of participants reported an improvement in their symptoms after six months of taking manganese, glucosamine and chondroitin.

Also taken with serrapeptase

Manganese is also studied in combination with the enzyme serrapeptase. Specifically, serrapeptase was found to be more stable and have more efficacy when in the presence of metal ions like manganese.

What should I avoid taking manganese with?

Short answer: Avoid taking manganese supplements at the same time as calcium, copper, iron or magnesium.

Avoid taking manganese at the same time as iron, calcium, magnesium or phosphorus

Several minerals have been found to either inhibit the absorption of manganese, or otherwise limit manganese retention, and these include iron, calcium, magnesium and phosphorus, so avoid taking any of these at the same time as your manganese supplement.

Avoid taking manganese at the same time as copper

Copper absorption is in turn limited by the presence of manganese, so it is important to not combine copper with manganese when planning your supplements, and instead take them at least three hours apart.

What are natural sources of manganese?

Short answer: Natural sources of manganese include mussels, nuts, grains, tofu, sweet potatoes, spinach, pineapple and garlic.

If you are interested in obtaining your daily manganese through your diet, you can often find it in:

Who should avoid taking manganese?

Short answer: Avoid taking manganese supplements if you have liver problems.

Before taking manganese supplements, check with your trusted healthcare professional if any of the following apply to you:

  • Liver problems

Manganese is cleared by your liver and excreted in bile, so a diagnosis of liver disease is the situation where a manganese supplement could cause excess buildup, and long-term exposure to high manganese is associated with a Parkinson-like movement disorder.

The other consideration is that manganese arrives inside several other supplements, including glucosamine blends, so your day's total is easier to exceed than a single label might suggest.

Remember to always discuss any vitamins or supplements with your trusted healthcare professional if you are suffering from any health conditions.

Possible side effects of manganese

Short answer: Side effects of manganese supplements can include nerve damage at chronic high intake.

Possible side effects from taking manganese supplements may include (but are not limited to) the following:

  • Nerve damage at chronic high intake

If you are experiencing negative side effects from taking manganese supplements, stop taking them immediately and reach out to your trusted healthcare professional.

Drug interactions with manganese

Short answer: Manganese supplements can interact with antacids, antibiotics, chemotherapy & radiotherapy and hormone therapy.

The medicines listed below are the ones most often named in interaction reports for manganese, but it is by no means a comprehensive list:

  • Antacids
  • Antibiotics
  • Chemotherapy & radiotherapy
  • Hormone therapy

Antibiotics

Certain types of antibiotics, such as tetracycline antibiotics, may reduce the absorption of manganese if taken together, so it is advisable to spread these out by at least three hours.

Antacids

The same applies to antacid medications, which often contain magnesium, a mineral which can inhibit manganese absorption, as noted above.

If you are taking any prescription drugs or medication, check with your trusted healthcare professional before taking manganese supplements.

Can I take manganese while pregnant or breastfeeding?

Short answer: Manganese supplements are safe to take during pregnancy and breastfeeding.

Manganese requirements rise to 2 mg a day during pregnancy, and it sits inside the enzyme that protects cells from oxidative damage. A shortfall hasn't been described on ordinary diets, and the amounts in a prenatal multivitamin should cover the requirement regardless.

Remember to always discuss any vitamins or supplements with your trusted healthcare professional while pregnant or breastfeeding, or while attempting to conceive.

What are deficiency symptoms of manganese?

Short answer: Manganese deficiency symptoms can include poor growth, scaly skin and hair color changes.

Possible signs of manganese deficiency may include (but are not limited to) the following:

  • Poor growth
  • Scaly skin
  • Hair color changes

True manganese deficiency is rare, because grains, nuts, leafy greens, tea and shellfish carry it and the body needs only a very small amount.

If you are experiencing abnormal symptoms, reach out to your trusted healthcare professional as soon as possible.

Where should I store manganese?

Short answer: You can store manganese supplements in the cupboard.

For optimal shelf life, it is recommended to keep manganese supplements stored in the cupboard. Always make sure the bottle or container is tightly closed, and kept away from sources of light, heat and humidity.

Manganese data sources & further reading

  1. 1.
  2. 2.
  3. 3.
  4. 4.
  5. 5.
  6. 6.
  7. 7.
  8. 8.
  9. 9.
  10. 10.
  11. 11.

Last updated October 29th, 2026

Remember

A balanced diet and a healthy lifestyle always come first, and supplements are meant to be just that: supplementary. While every effort has been made to ensure that the data on this page is accurate, said accuracy can never be guaranteed. The information provided is not medical advice, it is not intended to cover all possible interactions or adverse effects, and neither is it a substitute for the expertise of professional healthcare practitioners. You are always encouraged to do your own research, and to consult with your trusted doctor or pharmacist before taking any supplements.

Read our FAQ »

We use cookies to save your site preferences and manage site traffic.

More info