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MagnesiumER 7-Form Magnesium Complex Capsules with Vitamin D3 & B6 – 120 Count
Regular price
$40.00
$1.33 a serving, or $1.20 with a subscription
350 mg magnesium · 7 forms · Vitamin D3 and B6 · 4 capsules a day
350 mg magnesium from 7 forms. 25 mcg vitamin D3. 1.7 mg vitamin B6.
MagnesiumER by Mother Earth Labs is a 7-form magnesium complex supplement for adults: every 4-capsule serving has 350 mg of elemental magnesium from magnesium bisglycinate chelate, citrate, malate, Sucrosomial® magnesium, taurate, orotate and chloride. It also has 2.75 mg zinc and 50 mg fulvic acid, in plant-based capsules with no artificial colors, flavors or sweeteners, to take with your evening meal. It’s made in the USA with globally sourced ingredients.
120 capsules a bottle, 30 servings. US$1.33 a serving, or US$1.20 with a subscription.
Why MagnesiumER magnesium complex capsules
- Magnesium supports normal muscle and nerve function.†
- Magnesium and vitamin B6 help your body turn food into energy.†
- Magnesium and vitamin D3 help maintain healthy bones, and vitamin D3 supports calcium absorption.†
- Magnesium may support restful sleep as part of a healthy evening routine.†
- One bottle a month: 7 forms of magnesium in one formula, 120 capsules, 4 a day for 30 days.
- The facts up front: the full Supplement Facts, directions and cautions are right on this page.
Plant-based capsules · No artificial colors, flavors or sweeteners · For adults
† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
What’s in every serving: 7-form magnesium complex with vitamin D3 and B6
- Magnesium · 350 mg (83% DV) — from 7 forms, listed in the table below.
- Vitamin D3 · 25 mcg (125% DV) — as VegD3, a vegan cholecalciferol.
- Vitamin B6 · 1.7 mg (100% DV) — as pyridoxal 5′-phosphate (P5P), a coenzyme form of vitamin B6.
- Zinc · 2.75 mg (25% DV) — as zinc ascorbate.
- Fulvic acid · 50 mg — Daily Value not established.
The 7 forms of magnesium in MagnesiumER
A magnesium complex supplement combines several forms of magnesium in one formula. MagnesiumER’s 7 forms, each bound to a different partner, are listed below:
| Form | Type |
|---|---|
| Magnesium bisglycinate chelate | Chelate, bound to glycine |
| Magnesium citrate | Salt of citric acid |
| Magnesium malate | Salt of malic acid |
| Sucrosomial® magnesium | Magnesium oxide in a phospholipid and sucrose-ester matrix |
| Magnesium taurate | Bound to taurine |
| Magnesium orotate | Salt of orotic acid |
| Magnesium chloride | Mineral salt |
Elemental magnesium is the magnesium itself, not the weight of the whole compound. The label states the total, not the amount from each form.
Adults: up to 4 capsules a day. For adults, 350 mg is the upper limit for magnesium from supplements and medications. Magnesium from food doesn’t count toward it.
How to take MagnesiumER: how many capsules and when
- Take 4 capsules a day. That’s one serving.
- For an evening routine, take them with your evening meal.
- Don’t take more than 4 capsules a day. One serving is labeled at 350 mg of magnesium, the adult upper limit for magnesium from supplements and medications, so don’t add other magnesium supplements, antacids or laxatives with magnesium unless your healthcare practitioner advises it.
Caution: Not intended for children. Keep out of reach of children. Check with your healthcare practitioner before taking it, especially if you’re pregnant or nursing, take medication (including antibiotics or bisphosphonates) or other supplements, have a medical condition such as kidney disease, or may be allergic to any ingredient. Each serving is labeled at 350 mg of magnesium. High intakes of supplemental magnesium can cause loose stools, nausea or abdominal cramping; if that happens, stop use and talk to your healthcare practitioner. Do not use if the seal under the cap is broken or missing.
To report a side effect or serious adverse event, call 210-408-2800.
Daily stack: MagnesiumER with Algal Omega-3, our algae-based omega-3 softgels. Ask your healthcare practitioner before combining supplements.
Where it’s made
MagnesiumER is made in the USA with globally sourced ingredients.
Left out on purpose: no artificial colors, flavors or sweeteners.
| Ingredient | Amount per serving | % Daily Value |
|---|---|---|
| Vitamin D (as VegD3 vegan cholecalciferol) | 25 mcg | 125% |
| Vitamin B6 (as pyridoxal 5′-phosphate) | 1.7 mg | 100% |
| Magnesium (as magnesium bisglycinate chelate, magnesium citrate, magnesium malate, Sucrosomial® magnesium, magnesium taurate, magnesium orotate, magnesium chloride) | 350 mg | 83% |
| Zinc (as zinc ascorbate) | 2.75 mg | 25% |
| Fulvic acid | 50 mg | * |
*Daily Value (DV) not established.
Other ingredients: hypromellose (capsule), microcrystalline cellulose, ascorbyl palmitate.
Sucrosomial® is a registered trademark of PharmaNutra S.p.A. VegD3 is a trademark of its respective owner.
What is MagnesiumER?
MagnesiumER is a 7-form magnesium complex supplement from Mother Earth Labs, with 350 mg of magnesium, 25 mcg (1,000 IU) of vitamin D3 and 1.7 mg of vitamin B6 (as P5P) in every 4-capsule serving. A bottle holds 120 capsules, or 30 servings. It’s for adults and isn’t intended for children.
How much magnesium is in each serving?
350 mg of elemental magnesium in 4 capsules (87.5 mg per capsule), 83% of the Daily Value. It comes from 7 forms: magnesium bisglycinate chelate, citrate, malate, Sucrosomial® magnesium, taurate, orotate and chloride.
Does MagnesiumER contain magnesium glycinate?
Yes. MagnesiumER contains magnesium bisglycinate chelate (magnesium bound to glycine) as one of its 7 forms, so it isn’t a glycinate-only supplement. The label states the total magnesium, not the amount from each form.
Magnesium complex vs magnesium glycinate: what’s the difference?
Magnesium glycinate is a single form: magnesium bound to glycine. A magnesium complex combines several forms in one formula, and MagnesiumER has 7, including magnesium bisglycinate chelate. To compare products, check the elemental magnesium per serving on each label.
What is Sucrosomial® magnesium?
Sucrosomial® magnesium is magnesium oxide inside a matrix of phospholipids and sucrose esters, developed by PharmaNutra S.p.A. It’s one of MagnesiumER’s 7 forms, so MagnesiumER does contain magnesium oxide in this form.
Why are there 4 capsules in a serving?
Elemental magnesium is only part of each form’s weight, so 350 mg of magnesium from 7 forms takes 4 capsules. Every amount in the Supplement Facts is for all 4.
How many capsules can I take a day?
No more than 4, which is one serving, for adults only. One serving is labeled at 350 mg of magnesium, the adult upper limit for magnesium from supplements and medications, and that limit counts all of them together.
How much magnesium do I need a day?
The Daily Value on supplement labels is 420 mg, and the Recommended Dietary Allowance for adults is 310–420 mg a day from food and supplements, depending on age and sex. The adult upper limit for magnesium from supplements and medications is 350 mg a day; magnesium from food doesn’t count toward it.
Source: NIH Office of Dietary Supplements, Magnesium Fact Sheet for Health Professionals (updated January 6, 2026).
When should I take MagnesiumER?
For an evening routine, take your 4 capsules with your evening meal.
Can I take MagnesiumER with a multivitamin?
Not on the same day as one that contains magnesium, unless your healthcare practitioner advises it. A serving of MagnesiumER is labeled at 350 mg of magnesium, the adult upper limit for magnesium from supplements and medications, so any multivitamin with magnesium taken on the same day takes you over it. Our multivitamins with magnesium: pH Balancer capsules and Live Active Core Daily (200 mg each), Comprehensive Core capsules (150 mg) and Essential MultiVitamins capsules (84 mg).
The first three already have 125 mcg (5,000 IU) of vitamin D3 a serving, above the 100 mcg (4,000 IU) adult upper limit for vitamin D even without MagnesiumER’s 25 mcg (1,000 IU); Essential MultiVitamins capsules have 50 mcg (2,000 IU). A greens powder or any other product with added magnesium or vitamin D counts too.
Can I take MagnesiumER with other magnesium supplements?
Not on the same day as a full serving, unless your healthcare practitioner advises it. A full serving of MagnesiumER is labeled at 350 mg, the adult upper limit for magnesium from supplements and medications. Our SportActive electrolyte stick packs add 100 mg per stick, our Ionic Magnesium+ liquid drops add 50 mg per dropper and our CogniActive capsules add 80 mg per 4-capsule serving, so using any of them on the same day as a full serving goes over that limit. Bone Armor (350 mg a serving) and Bioactive B-Complex (50 mg) would too.
Can I take MagnesiumER with medication?
Ask your healthcare practitioner first if you take any medicine, prescription or over-the-counter. Magnesium can interact with some medicines, including certain antibiotics and bisphosphonates, which may need to be taken hours apart from MagnesiumER.
Does MagnesiumER contain caffeine or other stimulants?
No. None of its listed ingredients is a source of caffeine or other stimulants.
How long does a bottle last?
30 days at 4 capsules a day: a bottle holds 120 capsules. Three bottles are a 90-day supply. In Canada, the UK and the EU, the price shows in your local currency.
How does the subscription work?
Choose how often it renews: every 1, 2, 3 or 4 months. Subscription orders are 10% off: US$1.20 a serving instead of US$1.33. It renews automatically until you cancel. There’s no minimum number of orders. Each renewal is US$36.00 a bottle before any shipping or tax.
Is the capsule plant-based, and does it have a taste?
The capsule is hypromellose, a plant-based shell made from cellulose. MagnesiumER is unflavored, with no artificial colors, flavors or sweeteners.
Where is MagnesiumER made?
MagnesiumER is made in the USA with globally sourced ingredients.
Storage: Store tightly sealed in a cool, dry place.
We offer free shipping on orders over $99. Orders generally ship within 1-2 business days. Delivery details will be provided in your confirmation email.
The holidays are our busiest (and favorite!) time of year. Because of increased order volumes, delivery may take a little longer than normal. Rest assured—we’re doing everything we can to get your items to you as quickly and carefully as possible
Discount available for Military, First Responders, Medical Workers and Teachers
Unlock Discount
Regular price
$40.00
$1.33 a serving, or $1.20 with a subscription
350 mg magnesium · 7 forms · Vitamin D3 and B6 · 4 capsules a day
350 mg magnesium from 7 forms. 25 mcg vitamin D3. 1.7 mg vitamin B6.
MagnesiumER by Mother Earth Labs is a 7-form magnesium complex supplement for adults: every 4-capsule serving has 350 mg of elemental magnesium from magnesium bisglycinate chelate, citrate, malate, Sucrosomial® magnesium, taurate, orotate and chloride. It also has 2.75 mg zinc and 50 mg fulvic acid, in plant-based capsules with no artificial colors, flavors or sweeteners, to take with your evening meal. It’s made in the USA with globally sourced ingredients.
120 capsules a bottle, 30 servings. US$1.33 a serving, or US$1.20 with a subscription.
Why MagnesiumER magnesium complex capsules
- Magnesium supports normal muscle and nerve function.†
- Magnesium and vitamin B6 help your body turn food into energy.†
- Magnesium and vitamin D3 help maintain healthy bones, and vitamin D3 supports calcium absorption.†
- Magnesium may support restful sleep as part of a healthy evening routine.†
- One bottle a month: 7 forms of magnesium in one formula, 120 capsules, 4 a day for 30 days.
- The facts up front: the full Supplement Facts, directions and cautions are right on this page.
Plant-based capsules · No artificial colors, flavors or sweeteners · For adults
† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
What’s in every serving: 7-form magnesium complex with vitamin D3 and B6
- Magnesium · 350 mg (83% DV) — from 7 forms, listed in the table below.
- Vitamin D3 · 25 mcg (125% DV) — as VegD3, a vegan cholecalciferol.
- Vitamin B6 · 1.7 mg (100% DV) — as pyridoxal 5′-phosphate (P5P), a coenzyme form of vitamin B6.
- Zinc · 2.75 mg (25% DV) — as zinc ascorbate.
- Fulvic acid · 50 mg — Daily Value not established.
The 7 forms of magnesium in MagnesiumER
A magnesium complex supplement combines several forms of magnesium in one formula. MagnesiumER’s 7 forms, each bound to a different partner, are listed below:
| Form | Type |
|---|---|
| Magnesium bisglycinate chelate | Chelate, bound to glycine |
| Magnesium citrate | Salt of citric acid |
| Magnesium malate | Salt of malic acid |
| Sucrosomial® magnesium | Magnesium oxide in a phospholipid and sucrose-ester matrix |
| Magnesium taurate | Bound to taurine |
| Magnesium orotate | Salt of orotic acid |
| Magnesium chloride | Mineral salt |
Elemental magnesium is the magnesium itself, not the weight of the whole compound. The label states the total, not the amount from each form.
Adults: up to 4 capsules a day. For adults, 350 mg is the upper limit for magnesium from supplements and medications. Magnesium from food doesn’t count toward it.
How to take MagnesiumER: how many capsules and when
- Take 4 capsules a day. That’s one serving.
- For an evening routine, take them with your evening meal.
- Don’t take more than 4 capsules a day. One serving is labeled at 350 mg of magnesium, the adult upper limit for magnesium from supplements and medications, so don’t add other magnesium supplements, antacids or laxatives with magnesium unless your healthcare practitioner advises it.
Caution: Not intended for children. Keep out of reach of children. Check with your healthcare practitioner before taking it, especially if you’re pregnant or nursing, take medication (including antibiotics or bisphosphonates) or other supplements, have a medical condition such as kidney disease, or may be allergic to any ingredient. Each serving is labeled at 350 mg of magnesium. High intakes of supplemental magnesium can cause loose stools, nausea or abdominal cramping; if that happens, stop use and talk to your healthcare practitioner. Do not use if the seal under the cap is broken or missing.
To report a side effect or serious adverse event, call 210-408-2800.
Daily stack: MagnesiumER with Algal Omega-3, our algae-based omega-3 softgels. Ask your healthcare practitioner before combining supplements.
Where it’s made
MagnesiumER is made in the USA with globally sourced ingredients.
Left out on purpose: no artificial colors, flavors or sweeteners.
| Ingredient | Amount per serving | % Daily Value |
|---|---|---|
| Vitamin D (as VegD3 vegan cholecalciferol) | 25 mcg | 125% |
| Vitamin B6 (as pyridoxal 5′-phosphate) | 1.7 mg | 100% |
| Magnesium (as magnesium bisglycinate chelate, magnesium citrate, magnesium malate, Sucrosomial® magnesium, magnesium taurate, magnesium orotate, magnesium chloride) | 350 mg | 83% |
| Zinc (as zinc ascorbate) | 2.75 mg | 25% |
| Fulvic acid | 50 mg | * |
*Daily Value (DV) not established.
Other ingredients: hypromellose (capsule), microcrystalline cellulose, ascorbyl palmitate.
Sucrosomial® is a registered trademark of PharmaNutra S.p.A. VegD3 is a trademark of its respective owner.
What is MagnesiumER?
MagnesiumER is a 7-form magnesium complex supplement from Mother Earth Labs, with 350 mg of magnesium, 25 mcg (1,000 IU) of vitamin D3 and 1.7 mg of vitamin B6 (as P5P) in every 4-capsule serving. A bottle holds 120 capsules, or 30 servings. It’s for adults and isn’t intended for children.
How much magnesium is in each serving?
350 mg of elemental magnesium in 4 capsules (87.5 mg per capsule), 83% of the Daily Value. It comes from 7 forms: magnesium bisglycinate chelate, citrate, malate, Sucrosomial® magnesium, taurate, orotate and chloride.
Does MagnesiumER contain magnesium glycinate?
Yes. MagnesiumER contains magnesium bisglycinate chelate (magnesium bound to glycine) as one of its 7 forms, so it isn’t a glycinate-only supplement. The label states the total magnesium, not the amount from each form.
Magnesium complex vs magnesium glycinate: what’s the difference?
Magnesium glycinate is a single form: magnesium bound to glycine. A magnesium complex combines several forms in one formula, and MagnesiumER has 7, including magnesium bisglycinate chelate. To compare products, check the elemental magnesium per serving on each label.
What is Sucrosomial® magnesium?
Sucrosomial® magnesium is magnesium oxide inside a matrix of phospholipids and sucrose esters, developed by PharmaNutra S.p.A. It’s one of MagnesiumER’s 7 forms, so MagnesiumER does contain magnesium oxide in this form.
Why are there 4 capsules in a serving?
Elemental magnesium is only part of each form’s weight, so 350 mg of magnesium from 7 forms takes 4 capsules. Every amount in the Supplement Facts is for all 4.
How many capsules can I take a day?
No more than 4, which is one serving, for adults only. One serving is labeled at 350 mg of magnesium, the adult upper limit for magnesium from supplements and medications, and that limit counts all of them together.
How much magnesium do I need a day?
The Daily Value on supplement labels is 420 mg, and the Recommended Dietary Allowance for adults is 310–420 mg a day from food and supplements, depending on age and sex. The adult upper limit for magnesium from supplements and medications is 350 mg a day; magnesium from food doesn’t count toward it.
Source: NIH Office of Dietary Supplements, Magnesium Fact Sheet for Health Professionals (updated January 6, 2026).
When should I take MagnesiumER?
For an evening routine, take your 4 capsules with your evening meal.
Can I take MagnesiumER with a multivitamin?
Not on the same day as one that contains magnesium, unless your healthcare practitioner advises it. A serving of MagnesiumER is labeled at 350 mg of magnesium, the adult upper limit for magnesium from supplements and medications, so any multivitamin with magnesium taken on the same day takes you over it. Our multivitamins with magnesium: pH Balancer capsules and Live Active Core Daily (200 mg each), Comprehensive Core capsules (150 mg) and Essential MultiVitamins capsules (84 mg).
The first three already have 125 mcg (5,000 IU) of vitamin D3 a serving, above the 100 mcg (4,000 IU) adult upper limit for vitamin D even without MagnesiumER’s 25 mcg (1,000 IU); Essential MultiVitamins capsules have 50 mcg (2,000 IU). A greens powder or any other product with added magnesium or vitamin D counts too.
Can I take MagnesiumER with other magnesium supplements?
Not on the same day as a full serving, unless your healthcare practitioner advises it. A full serving of MagnesiumER is labeled at 350 mg, the adult upper limit for magnesium from supplements and medications. Our SportActive electrolyte stick packs add 100 mg per stick, our Ionic Magnesium+ liquid drops add 50 mg per dropper and our CogniActive capsules add 80 mg per 4-capsule serving, so using any of them on the same day as a full serving goes over that limit. Bone Armor (350 mg a serving) and Bioactive B-Complex (50 mg) would too.
Can I take MagnesiumER with medication?
Ask your healthcare practitioner first if you take any medicine, prescription or over-the-counter. Magnesium can interact with some medicines, including certain antibiotics and bisphosphonates, which may need to be taken hours apart from MagnesiumER.
Does MagnesiumER contain caffeine or other stimulants?
No. None of its listed ingredients is a source of caffeine or other stimulants.
How long does a bottle last?
30 days at 4 capsules a day: a bottle holds 120 capsules. Three bottles are a 90-day supply. In Canada, the UK and the EU, the price shows in your local currency.
How does the subscription work?
Choose how often it renews: every 1, 2, 3 or 4 months. Subscription orders are 10% off: US$1.20 a serving instead of US$1.33. It renews automatically until you cancel. There’s no minimum number of orders. Each renewal is US$36.00 a bottle before any shipping or tax.
Is the capsule plant-based, and does it have a taste?
The capsule is hypromellose, a plant-based shell made from cellulose. MagnesiumER is unflavored, with no artificial colors, flavors or sweeteners.
Where is MagnesiumER made?
MagnesiumER is made in the USA with globally sourced ingredients.
Storage: Store tightly sealed in a cool, dry place.
We offer free shipping on orders over $99. Orders generally ship within 1-2 business days. Delivery details will be provided in your confirmation email.
The holidays are our busiest (and favorite!) time of year. Because of increased order volumes, delivery may take a little longer than normal. Rest assured—we’re doing everything we can to get your items to you as quickly and carefully as possible
