Unlocking the Benefits of Source Naturals Magnesium Glycinate (120 Tablets)
If you often struggle with restless nights, tense muscles, or daily stress, low magnesium levels could be holding you back. Source Naturals Magnesium Glycinate delivers 200 mg of pure elemental magnesium per serving in a stomach-friendly form known as magnesium bisglycinate chelate. Unlike cheaper forms that cause uncomfortable bathroom trips, this formula is designed to pass smoothly through your digestive tract and absorb directly where your body needs it most.
Understanding Magnesium Glycinate: Why Chelation Makes a Big Difference
To understand why magnesium glycinate works so well, think of the word chelate as coming from the Greek word for “claw.” In this supplement, each magnesium molecule is chemically held by two molecules of glycine (an amino acid famous for its calming effect on the nervous system).
In ordinary supplements—like magnesium oxide—the mineral is poorly bound. When it hits your stomach and intestine, it pulls water into your bowels, often leading to rapid stomach cramps or diarrhea. Because Source Naturals attaches magnesium to glycine, your gut recognizes the molecule as an organic protein fragment (dipeptide) rather than a free mineral salt.
Magnesium Type
Absorption Rate
Digestive Comfort
Best Used For
Magnesium Bis-Glycinate
High (absorbed via amino acid pathways)
✔ Extremely gentle on stomach
Sleep, calm mood, muscle tension, daily mineral replenishment
Magnesium Oxide
Very Low (roughly 4% absorption)
Frequently causes loose bowels
Short-term constipation relief, acid indigestion
Magnesium Citrate
Moderate to High
Moderate laxative effect at higher doses
General supplementation and occasional bowel regularity
Clinical Reference: In human absorption studies, magnesium bisglycinate demonstrated superior intestinal bioavailability without the osmotic gastrointestinal side effects common to inorganic salts (Schuette SA, et al., JPEN J Parenter Enteral Nutr, 1994, PMID: 8014017).
Why Magnesium Matters: The Engine Behind 300+ Essential Body Functions
Magnesium is an essential electrolyte required by every single living cell in your body. It acts as a co-factor in more than 300 biological enzyme systems. Despite its importance, data from large-scale national nutrition surveys reveals that nearly 50% of American adults consume less than the recommended dietary allowance (RDA) of magnesium from food alone.
Cellular Energy (ATP): Your cells cannot generate or store adenosine triphosphate (ATP)—the fundamental energy currency of human life—without attaching to a magnesium ion.
Muscle Contraction & Release: Calcium tells your muscles to squeeze and tighten, while magnesium signals them to loosen and relax. A shortage often triggers twitching, tightness, and nocturnal leg cramps.
Strong Bone Structure: About 60% of your body’s magnesium is stored in bone mineral matrix, where it helps activate vitamin D and regulate calcium balance.
Blood Sugar and Heart Rhythm: Magnesium supports normal insulin response in tissues and maintains the electrical balance needed for a steady, rhythmic heartbeat.
The Science Behind Magnesium Glycinate: Evidence-Based Health Benefits
Peer-reviewed medical research has uncovered distinct physical and neurological advantages when pairing magnesium with glycine:
✔ Deeper, More Restful Sleep and Nighttime Calm
Both magnesium and glycine stimulate gamma-aminobutyric acid (GABA), your central nervous system’s primary “brake pedal” that quiets racing thoughts before bedtime. Glycine also acts directly on receptors in the brain's suprachiasmatic nucleus to gently lower core body temperature, signaling to your body that it is time for restorative slow-wave sleep.
Citations: Abbasi B, et al., J Res Med Sci, 2012 (PMID: 23853635); Kawai N, et al., Neuropsychopharmacology, 2015 (PMID: 25533534).
✔ Relief from Muscle Twitches, Spasms, and Nighttime Cramps
When muscle cells lack adequate intracellular magnesium, calcium flows unchecked into nerve endings, making muscle fibers hyper-excitable. In clinical trials, oral supplementation with chelated magnesium bisglycinate was shown to significantly reduce the frequency and painful intensity of leg cramps.
✔ Cardiovascular Support and Healthy Blood Pressure
Magnesium encourages the release of nitric oxide, a compound that helps blood vessels dilate naturally. A comprehensive meta-analysis published in the journal Hypertension concluded that consistent magnesium supplementation supports healthy systolic and diastolic blood pressure levels already within the normal range.
Citation: Zhang X, et al., Hypertension, 2016 (PMID: 27402922).
Complete Supplement Facts & Ingredient Breakdown
Source Naturals prides itself on clean, honest labeling. Here is the verified nutritional panel for each 2-tablet serving:
Supplement Facts
Serving Size: 2 Tablets
Servings Per Container: 60
Amount Per Serving
% Daily Value
Calories
5
Total Carbohydrate
1 g (<1%*)
Dietary Fiber
1 g (4%*)
Calcium (as dibasic calcium phosphate)
95 mg (7%)
Magnesium (as magnesium bis-glycinate)
200 mg (48%)
Sodium
10 mg (<1%)
*Percent Daily Values (%DV) are based on a 2,000-calorie diet.
Other Ingredients: Microcrystalline cellulose, dibasic calcium phosphate, stearic acid, modified cellulose gum, hydroxypropyl cellulose, magnesium stearate, and silica.
Purity Guarantee: Contains NO yeast, dairy, egg, gluten, corn, soy, or wheat. Free of sugar, starch, artificial preservatives, synthetic colors, artificial flavors, and fragrances.
✔ Suitable for Vegetarians • Non-GMO • Third-Party Tested for Purity
Safe Usage, Recommended Dosage, and Safety Warnings
Taking supplements responsibly means understanding proper dosing, timing, and possible medication interactions:
Suggested Routine & Best Timing
Recommended Use: Take 2 tablets once or twice daily with meals or a full glass of water.
For Restful Sleep: Take your daily serving approximately 30 to 60 minutes before bedtime to allow the combined effects of magnesium and calming glycine to assist your natural sleep onset.
Important Safety Considerations:
Kidney Health: Individuals with severe renal impairment (such as an estimated glomerular filtration rate [eGFR] below 30 mL/min) must consult their nephrologist before taking supplemental magnesium, as kidneys clear excess magnesium from the bloodstream.
Medication Spacing: Magnesium can bind to certain medications and decrease their effectiveness. Separate magnesium doses by at least 2 to 3 hours from tetracycline/fluoroquinolone antibiotics and bisphosphonates (osteoporosis drugs).
Pregnancy & Nursing: If you are pregnant, planning to become pregnant, or breastfeeding, speak with your healthcare provider prior to supplementation.
Why Choose Source Naturals Magnesium Glycinate from VitaNet?
Founded in 1982, Source Naturals is an industry pioneer dedicated to science-backed Bio-Aligned Formulations®. Every single production batch of magnesium bisglycinate undergoes stringent identity, potency, and purity testing to guarantee freedom from heavy metals, microbes, and unlisted fillers.
✔ Verified 100% Chelated
Formulated exclusively with real bisglycinate bonds, not diluted with cheaper magnesium oxide blends.
✔ VitaNet Customer Guarantee
Family-owned and serving health-conscious shoppers online since 1995 with full money-back peace of mind.
✔ Freshness & Potency
Stored in climate-controlled warehousing to preserve compound integrity from our shelf to your door.
Frequently Asked Questions (FAQ)
Will Source Naturals Magnesium Glycinate cause stomach upset or diarrhea?
It is very unlikely. Unlike magnesium oxide or citrate, which draw water into the intestinal tract and create a strong laxative effect, magnesium glycinate is chelated with glycine. This organic bond enables it to be absorbed gently and directly through amino acid pathways, making it the preferred choice for people with sensitive stomachs.
What does “200 mg elemental magnesium” mean?
“Elemental magnesium” refers to the actual weight of the pure mineral itself, separate from the glycine molecules bound to it. Each 2-tablet serving of Source Naturals Magnesium Glycinate gives you 200 mg of active, usable magnesium (supplying approximately 48% of the adult Daily Value).
What is the best time of day to take magnesium glycinate?
Because glycine has a natural calming influence on the nervous system, many people prefer taking their tablets in the evening, roughly 30 to 60 minutes before bed, to support deeper sleep. However, if you are using it primarily for day-to-day muscle relaxation or calm energy, you can take one tablet with breakfast and one with dinner.
How long does it take to feel results from magnesium glycinate?
Many individuals notice physical muscle relaxation and calmer nighttime sleep within 1 to 3 days of consistent use. Replenishing deeper cellular and bone stores to support cardiovascular wellness and sustained energy generally takes 4 to 8 weeks of daily supplementation.
Is this product gluten-free and suitable for vegetarians?
Yes. Source Naturals Magnesium Glycinate 120 Tablets is certified vegetarian and free of gluten, dairy, egg, corn, soy, and wheat. It contains no artificial colors, synthetic flavors, starch, or preservatives.
