Solaray Magnesium Glycinate Review
Solaray Magnesium Glycinate 350 mg is presented as a formula designed for optimum bioavailability and gentle digestion. The page describes it as an award-winning supplement that supports healthy muscles, bones, relaxation, and a healthy heart. It is produced in the company's GMP facility certified by NSF and tested to meet strict guidelines on potency, purity, and contaminants. Each serving is 4 VegCaps and delivers 350 mg of magnesium from magnesium bisglycinate, made through the company's in-house chelation process using only magnesium, glycine, heat, and water. The formula also includes BioPerine black pepper extract, which the page says helps with gentle digestion. The product is listed as Voted Best Single Mineral supplement in the Vitamin Retailer 2025 Vity Awards and is described as TESTED by SuppCo, with anonymous purchase and independent testing in ISO 17025 accredited labs to verify label claims. The page lists testing for heavy metals, contaminants, microorganisms, identity, purity, and potency, and notes that most contaminants, heavy metals, and microbes are tested to ensure no more than 3 ppm. The manufacturing facility is in Ogden, Utah, where the company says it sources and triple-tests raw materials, makes most products in-house, and runs an ISO-accredited lab. The page explains that chelation combines magnesium with glycine, and that the company believes it is the only U.S. supplement finished product manufacturer with its own in-house proprietary chelation process, which it says allows control and testing of inputs and outputs. Suggested use is 4 VegCaps daily with a meal or glass of water, stored in a cool, dry place. The FAQ notes it can be taken at any time of day, split between morning and bedtime, with or without food. The page also says it is a popular choice for supporting healthy bones and muscles and for help finding rest and relaxation, and that statements have not been evaluated by the FDA and the product is not intended to diagnose, treat, cure, or prevent any disease. Solaray has made supplements since 1973 and states that what people put in their bodies should be proven, not promised.
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Study, Trial or Testing Result Summary
Members Only12 human studies · 5 improved
The evidence for magnesium and thyroid health is mixed. This product gives 350 mg of magnesium a day, above the 250 mg used in one trial. A large pooled review of 35 trials in people with an underactive thyroid found that adding zinc, magnesium and vitamin A to meds raised free thyroxine, but magnesium was not tested on its own [1]. A 10-week trial in 86 adults with an underactive thyroid found the same three-nutrient combination raised free thyroxine and lowered an inflammation marker, with no change in thyroid-stimulating hormone [2]. A small 4-week study found magnesium alone raised active thyroid hormone in athletes and inactive people [3]. Magnesium before thyroid surgery did not clearly change calcium levels [4], and diet magnesium was not linked to thyroid cancer risk [5]. Magnesium taken with a thyroid hormone tablet cut its absorption, so take them hours apart [6]. The black pepper extract is present at 5 mg, and its studied dose is unclear. The only human study used a multi-herb blend and reported no thyroid result [7], while animal studies disagree on whether piperine raises or lowers thyroid hormone [8][9]. Animal and cell studies are never counted.
See all 12 studies →Hide the studies
- Across 35 trials of 3,508 people with underan underactive thyroid, adding zinc, magnesium and vitamin A to a med raised free thyroxine compared with placebo, but magnesium was not tested on its own.Additional treatment strategies for hypothyroidism: a network meta-analysis.
- A review of 11 studies found inconsistent results for magnesium and other vitamin and mineral supplements and thyroid cancer risk, so no protective or harmful effect could be concluded.Vitamin and mineral supplements and thyroid cancer: a systematic review.
- In 86 adults with an underactive thyroid, 10 weeks of daily magnesium 250 mg combined with zinc and vitamin A raised free thyroxine and lowered a blood marker of inflammation versus placebo, with no change in thyroid-stimulating hormone.Randomized Study of the Effects of Zinc, Vitamin A, and Magnesium Co-supplementation on Thyroid Function, Oxidative Stre…
- In 69 prediabetic or newly diagnosed type 2 diabetes patients given a multi-herb blend containing piperine twice daily for 120 days, blood sugar improved similarly to a med, but the abstract reports no thyroid-stimulating hormone result, so thyroid effects are unclear.Read the study on PubMed (34789340) →
- In 62 very low birth weight infants fed fortified human milk for 6 weeks, higher trace element and magnesium intake did not show a reported thyroid benefit; thyroid results were not described as different.Nutrition of very low birth weight infants fed human milk with or without supplemental trace elements: a randomized cont…
- In 62 people having thyroid surgery, 2 weeks of magnesium 300 mg plus calcium before surgery gave somewhat higher calcium levels and fewer low-calcium symptoms than no supplements, but the differences were not statistically significant.Impact of Preoperative Calcium and Magnesium Supplementation on Quality of Life and Hypocalcemia Post-Thyroidectomy.
- In a 4-week study of sedentary people and Tae-Kwon-Do athletes, 10 mg/kg daily of magnesium raised free T3 and prevented the exercise-related drop in thyroid hormone activity.The effects of magnesium supplementation on thyroid hormones of sedentars and Tae-Kwon-Do sportsperson at resting and ex…
- In a crossover study of 15 healthy adults, taking magnesium aspartate with a med tablet reduced a med absorption by 12%, and magnesium citrate reduced it by 7% without statistical significance, so the two should be taken apart.Read the study on PubMed (41221788) →
- In a large cohort of 566,398 adults followed for years, dietary magnesium intake was not associated with thyroid cancer risk.The association between selenium and other micronutrients and thyroid cancer incidence in the NIH-AARP Diet and Health S…
- In rats fed a high-fat diet and given an antithyroid drug, adding piperine at 40 mg per kg of body weight for 10 weeks brought thyroid hormone levels and insulin back to near normal, while also lowering blood fats. This was an animal study, not a human trial.Piperine, an active principle from Piper nigrum, modulates hormonal and apo lipoprotein profiles in hyperlipidemic rats.
- In adult male mice, piperine given by mouth at 2.5 mg per kg of body weight daily for 15 days lowered thyroid hormone levels and blood glucose, which the authors suggest could inhibit thyroid function. This was an animal study, not a human trial.Piperine lowers the serum concentrations of thyroid hormones, glucose and hepatic 5'D activity in adult male mice.
- In rats made hypothyroid, a mixture of four herbs (one of them black pepper) for 6 weeks improved memory and lowered brain tissue damage from oxidation. The piperine dose was not separated out, and this was an animal study.The effects of the combination of Cyperus rotundus, Crocus sativus, Piper nigrum, and Boswellia serrata on learning and …
Review Totals and Summary
Members Only8,911 reviews · 99% positive
Across the stores, Solaray Magnesium Glycinate has garnered 8911 ratings, and the following themes emerge from the written reviews that could be read on their pages. Customers frequently praise the effectiveness of these magnesium glycinate capsules, particularly for their impact on sleep and relaxation. Several users report significant improvements in their ability to sleep properly, with some noting they had struggled with sleep before starting the supplement. One verified buyer described it as "very effective" for evening use, stating that it surpassed other brands of magnesium glycinate she had tried. Beyond sleep, the product is also credited with aiding recovery. The brand itself, Solaray, enjoys a high level of trust among its users, who consistently commend its quality and reliability. Customers express general satisfaction with Solaray supplements, often describing them as good quality and dependable. Service and delivery also receive positive mentions, with one reviewer noting prompt shipping. An AI-generated summary of customer feedback on one page further highlights the product's effectiveness in supporting muscle, bone, and relaxation health, emphasizing optimal absorption and gentle digestion. It also notes the flexible dosing and describes the capsules as a popular choice for those seeking a dependable magnesium supplement. The primary criticism mentioned by reviewers concerns the pill count. Users note that the recommended serving of four VegCaps per day can feel like a substantial number of pills to take daily, with one customer expressing a wish for fewer pills to achieve the daily value. Overall, these Solaray Magnesium Glycinate capsules appear to be well-suited for individuals seeking support for sleep, relaxation, and recovery. They are also favored by those who prioritize a trusted brand known for reliable quality, optimal absorption, and gentle digestion. The product is seen as a dependable option for general magnesium supplementation, particularly for those looking to support muscle and bone health. While the written comments are few in number, they consistently point to high satisfaction, with the main caveat being the daily pill volume.
Biohacker Summary
Members Only8 of 10 recommend it
Most of the panel recommends or uses magnesium, and sleep is the main reason, with several also citing blood pressure, stress, muscle recovery, bone health and mood. Forms vary: two panelists specifically recommend glycinate, while several others take or favor threonate, often 400 mg before bed, and others use blended or electrolyte products. Doses mentioned include 300 mg before bed, 400 to 600 mg a day as a general need, and 300 to 500 mg a day as a minimum for bone health, and some suggest timing it 90 minutes to 2 hours before bed or taking it in the evening. One panelist cautions that labels can mislead by listing the whole compound weight instead of the actual magnesium, and says the evidence that it reliably improves sleep is not yet strong or consistent, though it may modestly lower blood pressure.
See all 10 biohackers →Hide the biohackers
Dr. Rhonda Patrick · Magnesium · recommends
- Explains that magnesium helps the body activate and metabolize vitamin D, and that magnesium intake has been associated with lower odds of vitamin D deficiency and insufficiency.
- Mentions that getting too little magnesium may play a role in declining testosterone levels.
- Recommends getting enough magnesium, around 300–400 mg daily from diet and supplements, as it is an essential cofactor for vitamin D metabolism. Magnesium glycinate is a good form.
- Mentions magnesium as one of the micronutrients found in multivitamins that people often don't get enough of from their diets.
- Explains that magnesium helps control blood pressure by boosting the production of substances that relax blood vessels and improve cardiovascular health, citing a meta-analysis that found magnesium supplementation at an average dose of 368 mg per day notably lowers both systolic and diastolic blood pressure.
- Magnesium supplementation has lowered blood pressure in randomized controlled trials. An analysis of 34 trials involving over 2,000 participants found modest reductions in both systolic and diastolic pressure, with a median dose of 368 mg/day.
- Warns that some magnesium supplements make the dose look much larger than it really is and that labels can fool people.
- Mentions magnesium as an important nutrient component for testosterone.
- Warns that some supplement companies mislead consumers by listing the total compound weight of magnesium citrate as the elemental magnesium dose, when the actual elemental magnesium content is much lower, potentially around 44-66 milligrams.
- States there is not yet strong, consistent evidence that magnesium supplementation reliably improves sleep, noting that while some meta-analyses suggest it can improve sleep quality scores, sleep efficiency, and sleep duration, individual studies are inconsistent and several have found no meaningful effect.
- Adds black pepper to her turmeric tea because the piperine in it stops enzymes in the liver from clearing out polyphenols, thus extending their half-life.
Dr. Eric Berg · Magnesium · recommends
- Recommends Magnesium glycinate, noting its high absorption rate compared to magnesium oxide, and its support for energy, sleep, muscle relaxation, and vitamin D function.
- Dr. Berg states that when nutrients like magnesium are too low, fatigue and weakness can follow.
- Recommends focusing on magnesium to support stronger bones if a neck hump is associated with osteoporosis.
- Explains that leg and calf cramps are most often caused by low magnesium, with leafy greens being a top source.
- States that magnesium is a cofactor that allows B1 to work more efficiently.
- States that magnesium is the most important mineral for energy production, as one cannot make energy without it.
- Magnesium is involved in 300 to 600 enzyme reactions, acts as a biological brake pedal, is the master controller over calcium, and is involved in making ATP, the energy currency of the body. It takes energy to go to sleep, and magnesium is required for relaxation and good sleep. Magnesium also helps balance cortisol levels and calm you.
- Dr. Eric Berg recommends pairing black pepper with turmeric to improve curcumin absorption.
- Dr. Eric Berg states that magnesium supports energy, muscle function, and sleep, and that most of it is stored inside cells, making deficiencies harder to detect with a standard blood test.
- Notes that magnesium could also be a factor in preventing muscle cramps.
- Recommends magnesium, specifically magnesium glycinate, stating it is key for D3 and K2 to work and is probably more important than calcium for building bone.
- Notes that black pepper aids in the absorption of Curcumin.
- Dr. Eric Berg recommends adding black pepper to eggs to support satiety, antioxidant potential, cardiovascular, and liver health.
- Recommends adding black pepper to food, especially when consuming turmeric, to increase absorption.
Thomas DeLauer · Magnesium · recommends
- Recommends taking magnesium glycinate and threonate at night to act as a brake on the nervous system, block excitatory signaling, help wind down, and support serotonin and melatonin production for better sleep.
- Mentions that magnesium glycinate also helps a lot with sleep.
- Mentions that restless leg syndrome is often treated with magnesium, but states that the sensation is actually coming from three other issues.
- Uses Element's cans which contain 30 milligram magnesium, finding that electrolytes help his workout performance.
- Uses Element's 30 mg magnesium cans first thing in the morning to prime his day and help with workout performance.
- Recommends magnesium around the time one would normally break a fast to calm the brain and dull feelings of conditioned hunger.
- Recommends magnesium, noting it is a cofactor for enzymes that build neurotransmitters, and deficiency can affect mood, happiness, and motivation.
- Notes that modern agricultural practices have led to soils depleted of trace minerals like magnesium, resulting in widespread magnesium deficiency.
- Recommends taking some magnesium glycinate tonight to help calm down and sleep.
- Mentions that magnesium in pumpkin seeds relaxes bronchial smooth muscle.
- Recommends taking black pepper with curcumin to increase its bioavailability, as curcumin gets metabolized before it can do anything without it.
- Recommends mixing curcumin with black pepper (piperine) for general inflammation, as piperine inhibits the breakdown of curcumin, increasing its bioavailability by up to 2,000%.
- Recommends black pepper with turmeric because its piperine blocks liver clearance, allowing curcumin to absorb and shut down inflammatory response.
- Black pepper makes curcumin actually absorb.
Andrew Huberman · Magnesium · recommends
- Notes that Les Spellman's team includes 'Magnesium timed right' as part of their game plan to optimize recovery in unfavorable conditions.
- Discusses Magnesium Threonate as a tool for falling asleep.
- Takes 400 mg of Magnesium Threonate before bed for sleep.
- Uses Element, an electrolyte drink with sodium, magnesium, and potassium in correct ratios and no sugar, to ensure adequate hydration and electrolytes, especially when starting days fast or during physical exercise.
- Takes 400 mg of Magnesium L-Threonate before bed for sleep.
- Confirms that magnesium is absolutely important for cognitive function, noting studies show those with lower magnesium intakes tend to perform less well on cognitive function tests, and it's related to brain changes over time and dementia risk.
- Takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
- He takes 400 mg of Magnesium L-Threonate from Double Wood before bed for sleep.
- Takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
- Takes 400 mg of magnesium L-threonate before bed for sleep.
- Recommends avoiding bioavailable curcuminoids like black pepper extract if someone's DHT is already low or if they have somewhat insensitive androgen receptors.
- States that black pepper extract, also known as BioPerine, is a 5-alpha-reductase inhibitor.
- Huberman states he avoids black pepper fruit extract (Bioperine) like the plague because it is a 5-alpha reductase inhibitor and affects liver cytochrome, which he believes caused his negative experience with turmeric.
Dr. Mark Hyman · Magnesium · recommends
- Recommends magnesium breakthrough advanced ten from Biooptimizers, which is their most complete magnesium formula with 10 bioavailable forms and 550 milligrams of elemental magnesium, designed to support restful restorative sleep, muscle recovery, stress resilience, and metabolic health.
- Recommends considering magnesium glycinate before bed for nervous system support, deeper sleep quality, and to help the body transition into rest, and states that they take it every night.
- Explains that a lack of magnesium can cause muscles and nerves to malfunction, resulting in muscle weakness, twitching, and cramps.
- Recommends Magnesium Breakthrough Advanced 10 from Bioptimizers for restful sleep, muscle recovery, stress resilience, and metabolic health, especially during stressful times of the year.
- Recommends magnesium because it is involved in over 600 reactions in the body and up to 80% of people may have low levels that never get flagged on a standard blood test.
- Recommends magnesium as a basic supplement during detoxification to support pathways, help with constipation, and provide electrolytes.
- Recommends Magnesium Breakthrough Advanced 10 from Biooptimizers, which contains 10 bioavailable forms and 550 mg of elemental magnesium, to support restful sleep, restorative sleep, muscle recovery, stress resilience, and metabolic health.
- Has recommended magnesium breakthrough from bioptimizers for years and now uses Magnesium Breakthrough Advanced 10 as part of his evening routine, especially during periods of travel, training, and higher stress, to support sleep, muscle recovery, and metabolic health.
- Recommends correcting nutrient deficiencies with magnesium.
- Recommends Magnesium Breakthrough Advance 10 from BiOptimizers, which has 10 bioavailable forms of magnesium and more elemental magnesium, as part of his evening routine for sleep, muscle recovery, and metabolic health.
- Recommends seasoning turmeric with black pepper to help the body absorb more nutrients.
- Notes that black pepper, along with gentle heat, improves the absorption of curcumin in Paleovalley's turmeric complex.
- Recommends taking curcumin with black pepper, specifically piperine, because it increases the absorption of curcumin.
- Uses black pepper with turmeric to activate curcumin.
Dave Asprey · Magnesium · uses
- Looks at magnesium alongside protein to keep muscle for the long run.
- Suggests adding magnesium to help keep potassium in the system longer, as they work hand in hand.
- Mentions magnesium in the context of sleep but states that it doesn't address the core issue of waking up during the night.
- Suggests that magnesium may help slow aging, support cellular repair, and improve sleep.
- States that magnesium can affect how the body responds to a supplement.
- Recommends fixing sleep with 300mg of Magnesium 101 before bed if diet and exercise aren't melting stubborn belly fat.
- Dave Asprey says his daily routine includes magnesium as part of a carefully developed combination for longevity.
- Recommends magnesium glycinate for sleep, stating that trials show it helps people fall asleep about 17 minutes faster and that he finds it incredibly effective.
- Mentions magnesium glycinate as one of the five gut-friendly, extensively researched ingredients in Kill Switch that helps with natural sleep.
- Dave Asprey recommends Magnesium Glycinate for sleep, noting human studies show it helps people fall asleep faster, is safe, and works on a fundamental aspect of health, unlike magnesium oxide which acts as a laxative.
- Dave Asprey used to research black pepper extract but changed his mind about its use after a discussion with Christian DPO, who highlighted its downsides.
- Dave Asprey states that black pepper is higher in aflatoxin and oxalate, neither of which is good for dogs.
- Dave Asprey warns against curcumin that comes with black pepper extract because studies show it pokes holes in the gut, allowing bacterial toxins to enter and cause inflammation, which is counterproductive to stopping inflammation.
- Recommends skipping black pepper when seasoning meals to avoid oxalates.
Ben Greenfield · Magnesium · uses
- Uses magnesium during surgery because it is neuroprotective.
- Says he is drinking LMNT, which contains sodium, potassium, and magnesium, and states that he actually drinks this stuff.
- Mentions magnesium as part of a bare-minimum protocol.
- Advises getting red blood cell magnesium levels to the high end of the range as a minimum step for overall health and to slow down heart disease.
- Recommends supplementing with magnesium threonate if one is low in magnesium, as it crosses the blood-brain barrier and is demonstrated to increase hippocampus plasticity, theoretically making one smarter and improving memories.
- Uses Magnesium Breakthrough from BIOptimizers as part of their daily stack, taking four capsules in the evening to support relaxation, recovery, and a good night of sleep.
- Recommends Celtic Sea Salt's new electrolyte drink "Hydrate" for replacing electrolytes and trace minerals lost through sweat, noting it contains 70 naturally occurring trace minerals, plus magnesium, taurine, and potassium.
- Had heart palpitations when he was really overdoing magnesium, not knowing what he was taking.
- Recommends taking magnesium as a co-factor to increase vitamin D absorption.
- Notes a new study indicating that magnesium is a core dietary antioxidant closely associated with a reduced risk of accelerated biological aging.
- Advises watching out for black pepper, as it is eliminated in core AIP and many people are surprisingly sensitive to it.
- Recommends combining black pepper with Triphala and Himalayan pink salt as a powder to brush with, as it is astringent, drives up inflammation and infection in the gums, is refreshing, and prevents plaque.
- Rubbed the beef with black pepper before searing.
- Mentions black pepper as something that can help with quelling tobacco/nicotine addiction.
Siim Land · Magnesium · recommends
- States that Magnesium can be a useful addition for some people for sleep.
- Recommends magnesium for sleep, especially deep sleep, and suggests trying better types like Threonate, Biscinate, or Torate, referencing a study where magnesium supplementation improved deep sleep.
- Recommends Magnesium for blood pressure, migraines and deficiency, based primarily on human research, especially randomized controlled trials showing measurable benefits.
- Lists Magnesium as one of 15 supplements backed by human studies.
- States that magnesium is a fundamental mineral governing over 600 enzymes and metabolic reactions, and recommends that most people need at least 400-500 mg/d for health, with some needing up to 600 mg/d.
- Lists seafood and pumpkin seeds as sources of Magnesium.
- Thinks magnesium has some of the strongest evidence and is worth considering.
- Recommends taking magnesium, specifically glycinate and threonate forms, 1 to 2 hours before bed for sleep benefits, noting that glycinate promotes relaxation and threonate crosses the blood-brain barrier for sleep quality and cognitive function.
- Notes that Boron reduces calcium/magnesium loss.
- Notes that magnesium is important for activating thiamine into its more biologically active form, and a magnesium deficiency can impair blood sugar regulation even with adequate thiamine intake.
- Lists black pepper as an herb or spice that is high in oxalates.
- Adds black pepper to his autophagy-boosting cocktail to promote bioavailability and slow down digestion.
Bryan Johnson · Magnesium · uses
- Takes 400 mg of Magnesium Threonate before bed for sleep.
- Takes 400 mg of Magnesium L-Threonate before bed for sleep.
- Takes 400 mg of Magnesium Threonate before bed for sleep.
- He takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
- Takes 400 mg of Magnesium L-Threonate before bed for sleep.
- Takes 400 mg of Magnesium Threonate before bed for sleep.
- Takes 400 mg of Magnesium L-Threonate before bed for sleep.
- Takes 400 mg of magnesium L-threonate before bed for sleep.
- He takes 400 mg of Magnesium L-Threonate before bed for sleep.
- Takes 400 mg of magnesium threonate before bed for sleep.
- Adds black pepper to turmeric because a compound in pepper called piperine boosts the power of turmeric by slowing the breakdown of curcumin in the gut and liver, making its antioxidant, anti-inflammatory, and metabolic benefits last longer.
Peter Attia · Magnesium · neutral
- Peter reviews the evidence for select off-label medications and supplements commonly used for sleep, including glycine, magnesium, ashwagandha, and phosphatidylserine.
- Suggests that zinc and magnesium could potentially help with vasodilation and sleep, particularly for women experiencing severe symptoms in the luteal phase.
- Peter discusses electrolytes and fiber and the ketogenic diet, specifically preventing magnesium loss.
- Recommends magnesium as one of the 'big three' micronutrients for bone health, suggesting a daily intake of 300 to 500 milligrams as a minimum, and personally aims for about a gram of supplemental magnesium.
- Recommends magnesium for optimizing bone mineral density, suggesting a daily intake of 300 to 500 milligrams as a minimum, but personally aims for about a gram.
- Takes a hardline view that most people do not have adequate or optimal levels of magnesium, and suboptimal levels will impede the metabolism of vitamin D because magnesium is a cofactor in its enzymatic conversion.
- Takes a hardline view that most people do not have adequate or optimal levels of magnesium, and suboptimal levels will impede vitamin D metabolism because magnesium is a co-factor in the enzymatic conversion of vitamin D.
- Takes magnesium as a straightforward supplement.
- Mentions that magnesium intake is often super low and impactful on testosterone levels.
- Discusses the important roles of magnesium in the body, how to determine if one might be deficient, the prevalence of magnesium deficiency, and its potential cognitive benefits.
RAL Summary
Members OnlyTier 4 for Thyroid Health
The tier 2 grade rests on a pooled review and a trial that gave magnesium only combined with zinc and vitamin A, so they do not show magnesium alone works for the thyroid, and five of eight human studies found no effect. So it is graded Tier 4, lower than the rules alone gave.
- Emerging: not enough evidence to rank higher yet.
Where the evidence disagrees: 7 of the 12 human studies found no effect.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Endocrine system, Nervous system, Musculoskeletal system
Combine with: To further support thyroid health alongside Magnesium Glycinate, consider supplementing with Selenium, which is crucial for the conversion of T4 to T3 and protects the thyroid from oxidative stress. Iodine is another fundamental nutrient, as it is a building block for thyroid hormones. Zinc plays a role in thyroid hormone synthesis and TSH production. Vitamin D is important for immune modulation and overall thyroid function, while B vitamins, particularly B12, can address common deficiencies and support energy metabolism. Additionally, adaptogens like Ashwagandha can help balance thyroid hormones and manage stress, which often impacts thyroid function.
Possible side effects: Magnesium can reduce absorption of thyroid hormone tablets if taken at the same time. Some reviewers note the four-capsule daily serving is a lot of pills.
Supplement Facts
Magnesium 350 mg · BioPerine® Black Pepper Extract 5 mg
| Calories | 10 | |
| Magnesium (from Magnesium Bisglycinate) | 350 mg | 83% |
| BioPerine® Black Pepper Extract (Piper nigrum) (fruit) | 5 mg | † |
Other ingredients: Vegetable Cellulose Capsule, Magnesium Stearate, Cellulose and Silica.
Directions: Use only as directed. Take 4 VegCaps daily with a meal or glass of water. Store in a cool, dry place.
Label source: Solaray · Report a label change
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Our articles on this subject
- Magnesium Glycinate vs Citrate: What the Studies ShowArticle · Oct 30, 2026
- Magnesium Glycinate vs Threonate: Which Form Is Right for You?Article · Nov 6, 2026
Graded October 28, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
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