top of page
Writer's pictureIssa Cirelos

Different Forms of Magnesium and Their Absorption Rates: What You Need to Know

Magnesium plays a vital role in numerous bodily functions, from muscle and nerve function to energy production. However, not all magnesium supplements are created equal. Different forms of magnesium vary in their absorption rates and specific health benefits, making it important to choose the right type for your needs.


Common Forms of Magnesium and Their Benefits

  1. Magnesium Citrate

    • Absorption Rate: Around 30%

    • Benefits: Known for its role in promoting digestion, magnesium citrate is often used to alleviate occasional constipation. It also has a relaxing effect, which can help improve sleep quality.

  2. Magnesium Glycinate

    • Absorption Rate: Approximately 24%

    • Benefits: A favorite for its calming effects, this form supports relaxation, better sleep, and reduced anxiety. It’s also gentle on the stomach, making it suitable for long-term use.

  3. Magnesium Threonate

    • Unique Property: Crosses the blood-brain barrier

    • Benefits: Ideal for enhancing brain health, memory, and cognitive function. It’s often recommended for individuals focusing on mental clarity and sleep improvements.

  4. Magnesium Chloride

    • Absorption Rate: Around 20%

    • Benefits: Useful for individuals with low stomach acid, as it supports digestion and nutrient absorption. It can also be applied topically to relieve muscle tension.

  5. Magnesium Sulfate (Epsom Salt)

    • Absorption: Primarily topical

    • Benefits: Commonly used in baths to soothe muscle aches and reduce inflammation. While it has a high absorption rate through the skin, it’s not as effective for oral supplementation.

  6. Magnesium Oxide

    • Absorption Rate: Only 4%

    • Benefits: Despite its low absorption, magnesium oxide can still help with constipation and is often included in multivitamins.

  7. Magnesium Aspartate

    • Absorption Rate: Up to 60%

    • Benefits: Provides a quick boost in magnesium levels and is sometimes paired with potassium for addressing fatigue and muscle cramps.


Choosing the Right Form

When selecting a magnesium supplement, it’s essential to align your choice with your health goals:

  • For digestive support, opt for magnesium citrate.

  • To improve relaxation and sleep, try magnesium glycinate or threonate.

  • For muscle health or topical applications, magnesium chloride or sulfate might be best.


Dosage Guidelines

Most individuals benefit from daily magnesium doses of 200-400 milligrams. In some cases, higher amounts (up to 1,000 milligrams) may be recommended. Always start with lower doses to avoid side effects like diarrhea and adjust as needed based on your body’s tolerance. Consulting a healthcare professional is advised before beginning supplementation.


Magnesium is a versatile and essential mineral that can significantly improve overall health when used correctly. If you’re unsure which form is right for you, we’re here to help.


Call Altair Integrative Wellness at 907-357-1818 to schedule a consultation and discover how magnesium can support your well-being!

Recent Posts

See All

© 2023 by Altair Integrative Wellness, Inc.

Tel: 907-357-1818

Fax: 907-357-1814

892 E USA CIR Suite 108 Wasilla, AK 99654

  • Instagram
  • White Facebook Icon
bottom of page