Manganese Bisglycinate
Last reviewed
Manganese is an essential trace mineral and the cofactor for SOD2 (mitochondrial antioxidant), glycosyltransferases (the enzymes that build glycosaminoglycans for connective tissue), and prolidase (the enzyme that recycles proline for new collagen), all directly relevant for hEDS. ZebraThrive uses 4 mg elemental daily, paired with copper in the AM stack to support balanced trace mineral status.
At a Glance
Daily Dose
4mg elemental manganese daily (AM capsules)
Key Benefits
How It Works
Manganese powers SOD2, the primary antioxidant protecting mitochondria (cellular powerhouses). Deficiency has been shown to upregulate MMP-1, MMP-9, and MMP-13-the exact enzymes overactive in hEDS. It also competes with calcium at mast cell influx channels, inhibiting the release of histamine.
What the Research Shows
Deficiency creates a catabolic state by increasing collagen-degrading enzymes.
Manganese deficiency upregulates MMP-1, MMP-9, and MMP-13.
Enhances cellular protection and stabilizes mast cell membranes.
Sustained supplementation at 15mg/90 days meaningfully increased SOD2 activity.
In vitro mast cell study
Mn2+ blocks calcium influx by competition, inhibiting IgE-mediated degranulation
Manganese is the cofactor for arginase, glutamine synthetase, pyruvate carboxylase, and Mn-SOD. These metalloproteins underpin antioxidant defense (Mn-SOD), urea-cycle handling (arginase), glutamine metabolism (GS), and TCA-cycle anaplerosis (pyruvate carboxylase). Daily dietary intake is the primary determinant of status; the 2 mg supplement dose sits well below the UL (11 mg/day).
Comprehensive metabolic review
Manganese is essential for development, digestion, reproduction, antioxidant defense, energy production, and immune response via cofactor function for arginase, GS, pyruvate carboxylase, and Mn-SOD; deficiency is rare but supplementation is appropriate at the 2 mg dose range
Authoritative dietary intake review
Reviews Mn occurrence in food, bioaccessibility, and adequate-intake levels by age; establishes safe-dose framework for supplementation up to the UL
Addressing the Triad
Tailored benefits for complex conditions
Manganese's MCAS relevance is mostly indirect through two pathways. First, direct: manganese competes with calcium at the L-type calcium channels mast cells use for degranulation. A 1991 study (Hide & Beaven) showed Mn2+ blocks calcium influx, inhibiting mast cell activation. Second, indirect: MnSOD (mitochondrial superoxide dismutase) requires manganese as its cofactor. Mast cells are highly oxidative-stress-sensitive - chronic oxidative stress amplifies degranulation. Manganese-driven MnSOD activity reduces that background. Manganese porphyrin treatment reduced histamine content in mast cells (Tagen 2009). The combination is favorable for MCAS at nutritional doses; no evidence supports manganese as a trigger.
For hEDS, manganese matters because it's a required cofactor for multiple collagen-synthesis and modification enzymes. Prolidase recycles proline from collagen breakdown - without adequate manganese, proline isn't efficiently returned to the pool for new collagen synthesis. Glycosyltransferases require manganese to attach the sugar groups that stabilize collagen structure. Critically, manganese deficiency upregulates MMP-1, MMP-9, and MMP-13 - exactly the matrix-degrading enzymes elevated in hEDS (Dong 2021). Inadequate manganese essentially turns up the volume on the degradation pathway hEDS already runs hot. Adequate manganese keeps that volume down.
For POTS, manganese works through the mitochondrial energy axis. MnSOD is the primary antioxidant defense inside mitochondria, and 100% of ME/CFS patients in clinical audits have measurable mitochondrial dysfunction - and ME/CFS is often comorbid with POTS. Supporting MnSOD activity supports mitochondrial resilience, which supports the cellular energy production that autonomic function depends on. There's no direct POTS clinical evidence for manganese - the case is mechanistic, working through the chronic fatigue and mitochondrial layer that runs alongside POTS in most patients. Foundational trace mineral support rather than a primary autonomic intervention.
Why We Chose This Form
Chelated delivery through amino acid transporters. EFSA confirms bisglycinate offers better GI tolerance than inorganic salts.
Form Comparison
Manganese Bisglycinate
Chelated; amino acid transport; superior GI tolerance
Manganese Sulfate
Standard reference form; higher rates of GI upset
Safety & Interactions
Potential Side Effects
Well-tolerated at 4mg (dose is below IOM upper limit of 11mg). Neurotoxicity risk is only for chronic high-dose inhalation.
Drug Interactions
No clinically relevant interactions with medications. Separate from tetracyclines by 2+ hours.
Excipients to Avoid
- Citric acid
- Soy-based fillers
Safe Excipients
- Rice flour
- HPMC capsules
Iron status affects absorption (low ferritin increases manganese uptake).
How to Start
| Protocol Step | Suggested Dosage | Key Notes |
|---|---|---|
| Weeks 1-2 | 1-2 mg daily | Assess tolerance |
| Week 3+ | 4 mg daily | Target maintenance (AM) |
"SOD2 activity enhancement requires ~3 months for full cellular effect."
State of the Evidence
No direct trials in EDS/POTS cohorts. The 'MMP paradox' requires selenium co-supplementation (included) to be safe.
- [1]Changes of manganese-dependent superoxide dismutase activities and expression with sustained manganese supplementationPMID: 1550052
Davis CD, Greger JL (1992)
- [2]Manganese deficiency increases MMP expressionPMID: 34546491
Dong et al. (2021)
- [3]Suppression of IgE-mediated mast cell activation by Mn2+PMID: 1869551
Hide M, Beaven MA (1991)
- [4]Manganese metabolism in humansPMID: 29293455
Chen P, Bornhorst J, Aschner M (2018)
- [5]Manganese in the Diet: Bioaccessibility, Adequate Intake, and Neurotoxicological EffectsPMID: 32298096
Martins AC et al. (2020)
Common Questions
Written by Ken Chapman, Founder of ZebraThrive. Reviewed and last updated .