Source Naturals Ultra-Mag (Catalog #SN0033) is a high-potency, multi-action dietary supplement designed to solve the single biggest problem with traditional mineral pills: poor intestinal absorption. While generic drugstore brands rely on single, harsh mineral salts, Ultra-Mag combines five distinct bioavailable forms of magnesium—Citrate, Malate, Glycinate, Taurinate, and Succinate—paired with Vitamin B-6 (Pyridoxine HCl) to help escort every milligram directly into your muscle fibers, nerve pathways, and heart tissue.
✓ 400 mg Pure Elemental MagnesiumDelivers 95% of your recommended daily value in a stomach-soothing, food-compatible form.
✓ 5 Diverse Absorption PathwaysSpreads uptake across multiple intestinal transporters, reducing loose stool complaints.
✓ Active Vitamin B-6 CatalystSupplies 30 mg of Pyridoxine HCl to carry magnesium through tough cellular membranes.
✓ Clean & Hypoallergenic100% vegetarian; zero gluten, soy, dairy, egg, wheat, sugar, or synthetic coloring.
The Bioavailability Problem: Why Inexpensive Magnesium Leaves You Deficient
Magnesium is essential for human life: it regulates over 300 distinct enzymatic reactions, from relaxing muscles and steadying heartbeat rhythms to creating DNA. Yet national nutrition surveys reveal that roughly 50% of the U.S. population does not consume sufficient magnesium through daily whole foods.
When shoppers reach for typical pharmacy brands, they almost always buy Magnesium Oxide. While oxide looks impressive on a label because it packs a high amount of raw weight into a small tablet, its internal crystalline structure dissolves poorly in stomach acid. Groundbreaking clinical trials demonstrate that as little as 4% of magnesium oxide is absorbed into the bloodstream (Firoz & Graber, 2001).
The “Spillover Effect” of Unabsorbed Minerals
What happens to that remaining 96%? Because your gut cannot absorb it, it stays trapped inside your colon. Through natural osmosis, this unabsorbed salt pulls large volumes of water into the digestive tract, leading to sudden abdominal cramping, urgency, and loose watery stools.
The Ultra-Mag Difference: By binding (“chelating”) elemental magnesium to organic fruit acids and calming amino acids, the mineral is recognized by natural protein transporters in your intestines. It passes seamlessly into your bloodstream without upsetting your stomach or triggering unwanted laxative emergencies.
The 5-in-1 Ultra-Mag Matrix: Five Specialized Forms, Zero Dead Ends
Most single-ingredient supplements rely on only one carrier. But your digestive tract uses different “check-in lanes” for different nutrient shapes. If you flood a single lane, absorption slows down. Source Naturals Ultra-Mag combines five distinct organic carriers to balance absorption across your entire body:
Magnesium Type
Organic Carrier
Primary Target System
Layman Health Role
Magnesium Glycinate
Glycine (calming amino acid)
Brain, Nerves, Sleep Cycles
Crosses easily into nerve tissue to quiet restless thinking, ease nervous tension, and encourage uninterrupted sleep.
Magnesium Malate
Malic Acid (cellular fruit acid)
Skeletal Muscles, Energy (ATP)
Fuels the cellular power plants (mitochondria) to help soothe heavy, stiff muscles and fight daily physical fatigue.
Magnesium Taurinate
Taurine (heart-friendly amino acid)
Heart Muscle, Blood Vessels
Protects vascular elasticity and supports a steady, coordinated heartbeat and healthy arterial blood pressure.
Magnesium Citrate
Citric Acid (citrus fruit acid)
Systemic Tissues, Colon Motility
Highly water-soluble for rapid uptake while gently encouraging comfortable, regular, strain-free bowel movements.
Magnesium Succinate
Succinic Acid (cellular intermediate)
Cellular Respiration, Stamina
Acts as a primary spark plug in the Krebs energy cycle, recharging tired tissues after exercise or stressful workdays.
The Vitamin B-6 Synergy: The “Cellular Key” That Multiplies Results
Absorbing magnesium into your circulating bloodstream is only step one. The real challenge is escorting that mineral across dense cell membranes and into the interior of your muscle and nerve cells where it can work.
In human biochemistry, Vitamin B-6 (Pyridoxine HCl) serves as a natural biochemical chaperone. It stimulates active transport channels that draw magnesium ions out of the bloodstream and directly into cellular cytoplasm. Without adequate Vitamin B-6, a high percentage of ingested magnesium simply circulates in extracellular fluid until your kidneys filter it out into your urine.
Peer-Reviewed Clinical Proof:
In a rigorous randomized clinical trial evaluating adults with low magnesium, researchers discovered that pairing magnesium with Vitamin B-6 produced a 24% greater reduction in perceived stress compared to magnesium taken alone (Pouteau et al., 2018, PLoS ONE). Ultra-Mag builds this proven synergistic ratio directly into every serving.
Evidence-Based Health Benefits: What You Can Expect
1. Relief from Nocturnal Leg Cramps and Muscle Twitches
To picture muscle function, think of calcium as the gas pedal that commands muscle fibers to contract, and magnesium as the brake pedal that commands them to release. When cellular magnesium levels drop too low, calcium floods your muscle fibers unchecked, causing involuntary spasms, persistent neck tension, and sudden nocturnal calf cramps. Ultra-Mag re-establishes optimal mineral equilibrium so your muscles can relax smoothly on command.
2. Deeper, Restorative Sleep and Calmer Nerves
Magnesium binds to and stimulates GABA receptors in the brain—the exact neurotransmitter pathways responsible for calming racing thoughts and quieting the nervous system before bedtime. In double-blind clinical trials, daily magnesium supplementation dramatically boosted sleep efficiency, prolonged total slumber time, and decreased nighttime serum cortisol levels (Abbasi et al., 2012).
3. Cardiovascular Elasticity and Healthy Blood Pressure Support
Your vascular system relies on magnesium to prevent small muscular spasms inside arterial walls. When magnesium is balanced, arteries remain pliable and elastic, allowing blood to circulate effortlessly. A large meta-analysis covering 34 randomized clinical trials confirmed that consistent magnesium supplementation supports healthy systolic and diastolic blood pressure levels already within normal limits (Zhang et al., 2016).
4. Sustainable Cellular Energy (ATP) Without Jitters
Every molecule of ATP (adenosine triphosphate)—your body's basic unit of physical energy—must bond with a magnesium ion to become biologically active (“Mg-ATP”). Without magnesium, your mitochondria cannot convert nutrients into usable fuel. Ultra-Mag supplies malate and succinate to directly recharge these cellular engines, supporting physical vitality without the crash of caffeine.
Medical Literature Citations & Clinical Evidence
In full alignment standards and healthcare criteria, the functional claims detailed on this page are grounded in peer-reviewed clinical literature:
Pouteau, E., Kabir-Ahmadi, M., Noah, L., et al. (2018). “Superiority of magnesium and vitamin B6 over magnesium alone on severe stress in healthy adults with low magnesemia: A randomized, single-blind clinical trial.” PLoS ONE, 13(12): e0208454. DOI: 10.1371/journal.pone.0208454
Abbasi, B., Kimiagar, M., Sadeghniiat, K., et al. (2012). “The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial.” Journal of Research in Medical Sciences, 17(12): 1161-1169. PMID: 23853635
Zhang, X., Li, Y., Del Gobbo, L. C., et al. (2016). “Effects of Magnesium Supplementation on Blood Pressure: A Meta-Analysis of Randomized Double-Blind Placebo-Controlled Trials.” Hypertension, 68(2): 324-333. DOI: 10.1161/HYPERTENSIONAHA.116.07664
Walker, A. F., Marakis, G., Christie, S., & Byng, M. (2003). “Mg citrate found more bioavailable than other Mg preparations in a randomised, double-blind study.” Magnesium Research, 16(3): 183-191. PMID: 14596323
Firoz, M., & Graber, M. (2001). “Bioavailability of US commercial magnesium preparations.” Magnesium Research, 14(4): 257-262. PMID: 11794633
Complete Supplement Facts & Full Ingredient Disclosure
Manufactured under strict Current Good Manufacturing Practices (cGMP) in the USA, every production batch of Source Naturals Ultra-Mag undergoes rigorous analytical testing for identity, heavy metal compliance, and microbial safety.
Supplement Facts
Serving Size: 2 Tablets Servings Per Container: 120 (Bottle of 240 Tablets)
Amount Per Serving
% Daily Value
Calories
10
Total Carbohydrate
1 g (<1%*)
Vitamin B-6 (as pyridoxine HCl)
30 mg (1,765%)
Magnesium (as magnesium citrate, succinate, glycinate, malate, and taurinate)
400 mg (95%)
Sodium
5 mg (<1%)
*Percent Daily Values (% DV) are based on a 2,000 calorie reference diet.
Other Non-Medicinal Ingredients: Stearic acid, acacia gum, modified cellulose gum, hydroxypropyl cellulose, magnesium stearate, and silica.
Allergen Free-From Statement: Contains NO yeast, dairy, egg, gluten, soy, or wheat. Formulated without sugar, artificial preservatives, synthetic dyes, synthetic flavors, or fragrances.
Dietary supplements should support, not replace, comprehensive healthcare. Always consult your personal physician or registered dietitian before introducing high-potency mineral supplements, especially if you take daily prescription drugs or manage chronic health conditions.
Recommended Dosage & How to Take
Take 1 or 2 tablets daily with food. Taking magnesium with a substantial meal minimizes any potential gastric sensitivity and matches the natural rhythm of digestive acid release. If you are new to chelated magnesium, consider taking 1 tablet daily for the first week, then increasing to 2 tablets once your digestive system adjusts.
Key Prescription Drug Interactions
Oral Antibiotics (Fluoroquinolones & Tetracyclines): High doses of magnesium can chemically bind to antibiotic compounds in the digestive tract, rendering the medicine inactive. Take Ultra-Mag at least 2 hours before or 4 to 6 hours after your antibiotic dose.
Bisphosphonates (Osteoporosis Medications): Separate your magnesium dose from bisphosphonates by at least 2 hours to avoid inhibiting bone medication absorption.
Diuretics: Potassium-sparing and loop diuretics alter how the kidneys filter minerals. Consult your prescribing physician to monitor your serum electrolyte panels.
Kidney Disease Warning: If you suffer from severe kidney disease or renal failure, do NOT take supplemental magnesium without express oversight from your nephrologist, as compromised kidneys cannot excrete excess minerals.
Frequently Asked Questions (FAQ)
What makes Source Naturals Ultra-Mag better than common drugstore magnesium?
Standard pharmacy magnesium is almost always magnesium oxide, which clinical studies show has an absorption rate as low as 4%. The remaining 96% draws water into the colon, frequently causing loose stools and cramps. Source Naturals Ultra-Mag blends five premium organic and chelated forms (Citrate, Malate, Glycinate, Taurinate, and Succinate) with Vitamin B-6. This multi-form blend provides high bioavailability, gentle digestion, and multi-system benefits for muscles, nerves, heart, and energy.
When is the best time of day to take Source Naturals Ultra-Mag?
Because Ultra-Mag supports both physical muscle recovery and nervous system calm, timing can be tailored to your primary goals. If you suffer from nighttime leg cramps or restless sleep, take your dose 30 to 60 minutes before bedtime with an evening snack. If your main goal is daytime muscle stamina and cardiovascular support, take 1 tablet with breakfast and 1 tablet with dinner.
Will Ultra-Mag cause loose stools or diarrhea?
Ultra-Mag is formulated with chelated forms like glycinate, malate, and taurinate that are far gentler on your stomach than magnesium oxide. While the citrate component supports healthy, regular bowel motility, it rarely triggers sudden loose stools when taken as directed with a meal. If you have a particularly sensitive digestive tract, start with 1 tablet daily before advancing to the 2-tablet serving.
Why is Vitamin B-6 included in this magnesium formula?
Vitamin B-6 acts as a biological transport partner. It facilitates the cellular uptake of magnesium across cell membranes into red blood cells and tissues. Clinical research demonstrates that pairing magnesium with Vitamin B-6 produces significantly greater stress reduction than magnesium alone.
How long does a bottle of SKU SN0033 last?
Each bottle of SKU SN0033 contains 240 tablets. At the full clinical serving of 2 tablets daily (supplying 400 mg elemental magnesium), one bottle represents a full 120-day (4-month) supply. If taken as a maintenance dose of 1 tablet daily, a single bottle will last 240 days (8 months).
Is Source Naturals Ultra-Mag safe for vegetarians and individuals with food allergies?
Yes. Ultra-Mag is 100% vegetarian and contains no animal-derived ingredients. It is also formulated free of common allergens, including dairy, egg, gluten, soy, wheat, and yeast, and contains no artificial flavors, colors, or synthetic preservatives.
