AI PharmCare
Doctor's Best High Absorption Magnesium (Glycinate Lysinate)
Pharmacist Safety Review

Is Doctor's Best High Absorption Magnesium (Glycinate Lysinate) Safe?

Generic: magnesium glycinate lysinate

Reviewed by Dr. Younghun ChoLast reviewed April 24, 2026

Generally yes, Doctor's Best High Absorption Magnesium (Glycinate Lysinate) is considered safe for most healthy adults when taken as directed. This form of magnesium is well-tolerated and less likely to cause digestive upset compared to other magnesium types, making it a good choice for boosting magnesium levels.

Who Should Avoid or Consult First

  • People with kidney disease
  • Individuals with very slow heart rates or heart block
  • Those with myasthenia gravis
  • Pregnant or breastfeeding women should consult a doctor first

Common Side Effects

  • Diarrhea — less common with this form, but possible at higher doses
  • Nausea
  • Stomach cramps
  • Drowsiness — more likely at higher doses or when taken before bed
  • Muscle weakness — typically only at very high doses

Interactions to Watch For

Certain antibiotics (tetracyclines, quinolones)

Magnesium can bind to these antibiotics, reducing their absorption and making them less effective. Take magnesium at least 2-4 hours apart.

Bisphosphonates (for osteoporosis)

Magnesium can interfere with the absorption of these medications. Separate doses by at least 2 hours.

Diuretics (water pills)

Some diuretics can increase magnesium excretion, while others can increase magnesium levels, requiring careful monitoring.

Blood pressure medications (especially calcium channel blockers)

Magnesium can enhance the blood pressure-lowering effects, potentially leading to excessively low blood pressure.

Muscle relaxants

Magnesium can increase the effects of muscle relaxants, leading to increased drowsiness or muscle weakness.

People Also Ask

Can I take magnesium glycinate daily?

Yes, magnesium glycinate is generally safe for daily, long-term use, especially if you have a known deficiency or are using it for benefits like sleep or muscle relaxation. If you have underlying health conditions, regular monitoring by a doctor might be advised.

Is magnesium glycinate safe during pregnancy?

Magnesium is an essential nutrient during pregnancy, and glycinate is often considered a good option due to its gentle nature. However, always consult your doctor before starting any new supplement while pregnant or breastfeeding to ensure appropriate dosing and safety for your specific situation.

What happens if I take too much magnesium?

Taking too much magnesium can lead to symptoms like severe diarrhea, nausea, vomiting, muscle weakness, low blood pressure, and irregular heartbeat. In very rare and extreme cases, it can cause magnesium toxicity, which is a medical emergency. Always stick to the recommended doses.

Can children take magnesium supplements?

Magnesium supplements can be given to children, but it is crucial to consult a pediatrician first. Dosing needs to be carefully adjusted based on the child's age and weight, and a doctor can determine if a supplement is necessary and safe.

Bottom Line

Doctor's Best High Absorption Magnesium is a generally safe and effective supplement for most adults looking to increase their magnesium intake. Always start with the recommended dose and discuss any concerns with your doctor, especially if you have existing health conditions or take other medications.

References

  1. 1.
    FDA Drug Label — Acid Reducer

    FDA DailyMed: Acid Reducer · FDA

  2. 2.
    The Role of Magnesium in Sleep Health: a Systematic Review of Available Literature.

    Arab A, Rafie N, Amani R, et al., Biological trace element research, 2023 · PubMed

  3. 3.
    Oral magnesium supplementation for insomnia in older adults: a Systematic Review & Meta-Analysis.

    Mah J, Pitre T, BMC complementary medicine and therapies, 2021 · PubMed

  4. 4.
    The effect of magnesium supplementation on muscle fitness: a meta-analysis and systematic review.

    Wang R, Chen C, Liu W, et al., Magnesium research, 2017 · PubMed

  5. 5.
    Magnesium and Cognitive Health in Adults: A Systematic Review and Meta-Analysis.

    Chen F, Wang J, Cheng Y, et al., Advances in nutrition (Bethesda, Md.), 2024 · PubMed

  6. 6.
    Magnesium in Prevention and Therapy.

    Gröber U, Schmidt J, Kisters K, Nutrients, 2015 · PubMed

Educational content based on FDA labeling, published research, and pharmacist review. Not a substitute for individualized medical advice.