Why Magnesium Helps Concussion Recovery Concussion depletes brain magnesium levels. Animal studies and human research consistently show reduced brain magnesium following traumatic brain injury, including mild concussion. The depletion persists for weeks. The deficiency contributes to NMDA receptor dysregulation, glutamate-induced excitotoxicity, sleep disruption, and headache that characterize PCS (Hoane, 2011). Magnesium supports the systems concussion impairs. Magnesium regulates the NMDA receptors that mediate calcium influx and excitotoxic damage. It supports GABA receptors that produce calming and sleep. It assists mitochondrial energy production. It relaxes muscles. Each of these functions addresses a specific component of PCS symptoms. Form matters more than dose for most uses. Different magnesium forms have different absorption, bioavailability, and target tissues. Glycinate provides general systemic benefit with calming effect. L-threonate crosses the blood-brain barrier for cognitive support. Citrate produces laxative effects. Oxide is poorly absorbed. Matching form to need produces better results than maximizing dose. Most patients benefit from 200-400 mg elemental magnesium daily. This is the dose range associated with clinical benefit in research. Lower doses may be inadequate. Higher doses produce diminishing returns and increased side effects without proportional benefit. Best Overall: Pure Encapsulations Magnesium Glycinate Website: pureencapsulations.com Price: ~$30-35 for 180 capsules Pure Encapsulations uses pure magnesium bisglycinate (also called glycinate) in a hypoallergenic formulation. Glycinate is the best-tolerated form for most people, with high bioavailability and minimal GI side effects. The glycine component itself supports sleep and reduces anxiety. The brand's clinical-grade purity and absence of additives makes it appropriate for chemically sensitive patients. What makes it stand out: 120 mg elemental magnesium per capsule (allows precise titration) Pure magnesium bisglycinate (high bioavailability) No common allergens, gluten, soy, or artificial additives Practitioner-grade brand Glycine itself supports sleep and reduces anxiety Gentle on stomach (minimal GI effects) 3rd party tested Limitations: Higher cost per dose than budget brands. Not widely available at retail (online or through practitioners). Multiple capsules needed for therapeutic dose (2-3 capsules for 240-360 mg). The hypoallergenic formulation costs more than standard formulations. Best for: Patients with chemical sensitivities who want the cleanest formulation, or anyone wanting clinical-grade quality for ongoing recovery use. Best for Cognitive Support: Momentous Magnesium L-Threonate Website: livemomentous.com Price: ~$45-55 for 60 capsules Magnesium L-threonate is the only form proven to substantially raise brain magnesium levels through enhanced blood-brain barrier crossing. The Momentous version uses patented Magtein L-threonate at clinical research doses. For concussion patients with cognitive symptoms (brain fog, memory, attention), the brain-specific form addresses the cognitive component more directly than other magnesium forms. What makes it stand out: Patented Magtein L-threonate (research-grade form) Crosses blood-brain barrier (raises brain magnesium specifically) NSF Certified for Sport tested 2,000 mg L-threonate per serving (matches clinical research dose) May support memory, learning, and cognitive function Used by many professional athletes Vegetarian capsules Limitations: Premium pricing (most expensive magnesium per dose). The elemental magnesium content is lower than other forms (144 mg per 2,000 mg L-threonate). Requires 3 capsules per dose. The brain-specific effects, while supported by some research, are less established than the general magnesium benefits. Best for: Patients with prominent cognitive symptoms (brain fog, memory difficulty, attention problems) who want brain-specific magnesium support. Best combined with a standard magnesium glycinate for whole-body magnesium repletion. Best for Sleep: Thorne Magnesium Bisglycinate Powder Website: thorne.com Price: ~$28-32 for 187 g (37 servings) The Thorne powder version provides 200 mg elemental magnesium per serving in a citrus-flavored powder. The powder form dissolves in water for fast absorption, which works particularly well for sleep onset support. The flavor makes daily consistency easier than capsules for some patients. Thorne's NSF Certified for Sport testing ensures purity. What makes it stand out: 200 mg elemental magnesium per serving Powder form for fast absorption Light citrus flavor (more palatable than unflavored powders) NSF Certified for Sport Easy to mix into evening tea or water Adjustable dose (use less for partial servings) Pre-bed routine integration Limitations: Higher cost per serving than capsules. The citrus flavor uses natural flavors that some chemical-sensitive patients react to. Powder form requires mixing (small extra step at bedtime). The full container provides only 37 servings (1.2 months at one daily serving). Cannot be split for travel as easily as capsules. Best for: Patients who use evening tea or beverage routines and want to integrate magnesium into the pre-sleep ritual. The powder form supports the sensory ritual of preparing for sleep. Best Budget: Doctor's Best High Absorption Magnesium Glycinate Lysinate Website: Available at most retailers Price: ~$15-22 for 240 tablets The Doctor's Best version uses Albion TRAACS chelated magnesium (glycinate-lysinate blend) at budget pricing. Albion TRAACS is one of the most-researched chelated magnesium forms with documented high bioavailability. The 240-tablet bottle provides 4 months of supply at therapeutic doses, making the cost-per-dose competitive with premium brands. What makes it stand out: Albion TRAACS chelated magnesium (research-supported form) 200 mg elemental magnesium per 2 tablets 240 tablets per bottle (4-month supply) Widely available at retail Vegan and non-GMO USP verified Budget pricing for chelated magnesium Limitations: Contains tablet binders (microcrystalline cellulose, stearic acid, magnesium stearate) that some patients react to. Tablets are large and difficult to swallow for some. The combined glycinate-lysinate, while well-absorbed, is not as well-studied as pure glycinate. Less premium positioning may affect perceived quality. Best for: Budget-conscious patients who want effective chelated magnesium without the practitioner brand premium. Particularly useful for long-term use where cost per dose adds up. Best Topical: Ancient Minerals Magnesium Oil Spray Website: ancient-minerals.com Price: ~$20-30 for 8 oz Topical magnesium chloride spray provides transdermal absorption that bypasses GI sensitivity. For patients with GI issues from oral magnesium (laxative effects, nausea) or those who want targeted application to specific muscle areas, the spray provides an alternative or supplement to oral dosing. Apply to areas of muscle tension (neck, shoulders, calves) before bed. What makes it stand out: Transdermal absorption (bypasses GI sensitivity) Topical application to specific muscle areas No GI side effects Direct relief of muscle tension Can combine with oral magnesium for compounded benefit Pure ancient seabed magnesium chloride Limitations: Absorption rates are debated; research on transdermal magnesium efficacy is mixed. The spray produces tingling or itching sensation in many users (usually fades with regular use). The salt residue requires rinsing after 20-30 minutes. Cannot replace oral magnesium for systemic deficiency. Smell is mildly mineral-like. Best for: Patients with GI sensitivity to oral magnesium or those with prominent muscle tension symptoms. Best used as adjunct to oral supplementation, not replacement. How to Choose the Right Magnesium Supplement Your choice depends on three factors: primary symptom (sleep vs cognitive vs muscle), GI tolerance, and budget. Primary symptom is sleep disruption: Pure Encapsulations Magnesium Glycinate ($30-35) for clean glycinate Thorne Magnesium Bisglycinate Powder ($28-32) for evening tea integration Primary symptom is cognitive (brain fog, memory): Momentous Magnesium L-Threonate ($45-55) for brain-specific form Combine with glycinate for systemic plus brain coverage Primary symptom is muscle tension and headache: Pure Encapsulations Magnesium Glycinate ($30-35) for glycine relaxation Ancient Minerals Topical ($20-30) for targeted muscle application GI sensitivity to oral magnesium: Ancient Minerals Topical Magnesium Oil ($20-30) bypasses GI Pure Encapsulations Glycinate ($30-35) is the best-tolerated oral form Budget priority for long-term use: Doctor's Best High Absorption Magnesium Glycinate Lysinate ($15-22) Want both cognitive and general benefit: Momentous L-Threonate ($45-55) for brain + Pure Encapsulations Glycinate ($30-35) for body Forms to Avoid for Concussion Recovery Magnesium oxide. Only 4% absorbed. Common in cheap supplements but ineffective. The 500 mg listed on labels translates to about 20 mg actually absorbed. Skip this form regardless of price. Magnesium citrate at high doses. Produces strong laxative effects. Useful for occasional constipation but problematic for daily supplementation. The laxative effect prevents adequate dosing for therapeutic benefit. Magnesium sulfate (Epsom salt) orally. Used as laxative. Not appropriate for daily supplementation. Epsom salt baths provide some topical benefit but should not be taken internally. Combined products with multiple ingredients you do not need. Sleep formulas often combine magnesium with herbs, melatonin, and other ingredients. The combination prevents titration and exposes you to ingredients you may not want. Use single-ingredient magnesium and add other supplements separately. Dosing Strategy Start with 200 mg elemental magnesium at bedtime. Evening dosing provides sleep benefit. The starting dose minimizes GI side effects while establishing tolerance. Increase to 300-400 mg over 1-2 weeks if tolerated. The therapeutic range for most PCS patients is 300-400 mg elemental magnesium daily. Build up gradually. Split dose for higher amounts. If 400 mg produces GI effects, split into 200 mg twice daily. The split reduces GI exposure while maintaining total dose. Take with food for better tolerance. Food improves absorption and reduces GI effects. Take with dinner if doing single evening dose. Allow 2-4 weeks for full effect. Brain magnesium repletion takes time. Sleep improvement often appears within 1-2 weeks. Full benefit on headache and other symptoms typically develops over 4-6 weeks. Pre-Sleep Mobility Routine Magnesium supports cellular function. These exercises address the cervical and autonomic tension that prevent quality sleep regardless of magnesium levels. Combine for compounded effect. JME 155 Diaphragmatic breathing for 10 breaths activates parasympathetic system that magnesium also supports. The combined effects produce better sleep onset than either alone. JME 14 Chin tucks reduce cervical tension. 10 repetitions with 5-second holds. The cervical release combined with magnesium-supported muscle relaxation addresses both physical and biochemical contributors. JME 3 Lateral cervical flexion releases upper trapezius. 8 repetitions per side with 15-second holds. Magnesium supports the muscle relaxation that the stretching produces. JME 151 Lateral side bends with breathing combine mobility and parasympathetic activation. 8 repetitions per side. Start your 3-day free trial for recovery-support mobility routines designed for concussion patients. Common Mistakes With Magnesium After Concussion Choosing the wrong form. Magnesium oxide is poorly absorbed. Magnesium citrate produces laxative effects. Stick with glycinate for general use, L-threonate for cognitive support, topical for muscle tension. Starting at too high a dose. Jumping to 400+ mg immediately produces GI effects that lead to discontinuation. Start at 200 mg and increase gradually. Stopping too early. Brain magnesium repletion takes 4-6 weeks for full effect. Patients who try magnesium for 1-2 weeks and stop because of incomplete benefit miss the full effect. Drug interactions. Magnesium interacts with certain antibiotics (tetracyclines, fluoroquinolones), bisphosphonates, and some other medications. Discuss with prescriber if you take these. Ignoring kidney function. Patients with kidney disease should not supplement magnesium without nephrology guidance. The kidney clears excess magnesium; impaired clearance can produce dangerous levels. How much magnesium can I take safely? Up to 400 mg daily from supplements is well-tolerated for most adults with normal kidney function. Higher doses produce GI effects (loose stools) before reaching toxic levels. Consult provider before exceeding 400 mg daily, particularly with any kidney concerns. Should I test my magnesium level before supplementing? Serum magnesium tests are unreliable for assessing brain magnesium. RBC magnesium is more informative but still imperfect. Most patients can supplement without testing. Trial of 4-6 weeks supplementation is more informative than baseline testing. Will magnesium interact with my migraine medications? Generally no, and magnesium often helps migraine. Many migraine specialists recommend magnesium as adjunct treatment. The combination is well-established and safe. Can I get enough magnesium from food? Dark leafy greens, nuts, seeds, whole grains, and dark chocolate provide magnesium. Most Americans get 200-300 mg daily from food, below the recommended 400-420 mg for adults. Concussion increases need beyond baseline. Food alone rarely reaches therapeutic levels during PCS recovery. References Hoane, M. R. (2011). The role of magnesium therapy in learning and memory. Magnesium in the Central Nervous System, University of Adelaide Press. PubMed Patricios, J. S., et al. (2023). Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. British Journal of Sports Medicine, 57(11), 695-711. PubMed