Magnesium Caps 420 mg
Twinlab
Score 65
An affordable, high-dose magnesium oxide supplement often chosen for its impact on digestive health rather than broad systemic absorption.
Score 65
An affordable, high-dose magnesium oxide supplement often chosen for its impact on digestive health rather than broad systemic absorption.
Also available as 1 option
Analysis
This supplement delivers 420mg of elemental magnesium per capsule, exclusively from magnesium oxide. Magnesium oxide is characterized by its high elemental magnesium content, making it a cost-effective way to ingest a substantial quantity of the mineral. Its primary and most pronounced effect is typically to promote bowel regularity due to its osmotic action in the intestines, though a portion is absorbed systemically.
The product comes in capsule form, with 100 servings per bottle, offering a consistent and economical supply for regular use. It's a straightforward option for those specifically looking for the properties of magnesium oxide.
Pros
- Very economical price per serving, making it highly budget-friendly.
- Provides a substantial 420mg dose of elemental magnesium per capsule.
- Effective for promoting digestive regularity and relieving occasional constipation.
- Capsule form is convenient for swallowing.
Cons
- Magnesium oxide has relatively low systemic bioavailability, meaning less is absorbed for widespread bodily functions compared to other forms.
- Known to have a strong laxative effect, which may be undesirable for some users or in higher doses.
- Fewer reviews compared to some other mass-market magnesium products.
Warnings
- Magnesium oxide can cause significant laxative effects, including loose stools, diarrhea, and abdominal cramping, especially at this high dose.
- Individuals with sensitive digestive systems should start with a lower dose or consider a different form of magnesium.
- Consult a healthcare professional before use if you have kidney conditions or are taking other medications.
$9.34($0.09 per serving)
 iHerb | $ 9.34 | |
 Pure Formulas | $ 10.99 | |
 Vitacost | $ 10.99 | |
 Walmart | $ 12.65 | |
 Amazon | $ 37.95 |
Goals
Impact
Highest effect
Magnesium oxide is highly effective for promoting digestive regularity and relieving occasional constipation due to its strong osmotic effect. This product is a potent and common choice for this specific purpose.
Impact
Moderate effect
As an economical way to get a high dose of magnesium, it contributes to meeting basic mineral needs. However, the form's lower absorption for systemic benefits means it's not the most comprehensive option for general health.
Impact
Moderate effect
Magnesium is crucial for bone health, but the lower absorption of magnesium oxide may limit its optimal contribution to bone density compared to other forms. It offers foundational support rather than comprehensive.
Impact
Moderate effect
While magnesium supports heart health, the lower systemic absorption of magnesium oxide means it may be less effective for this purpose compared to more bioavailable forms. It offers foundational, but not optimal, support.
Impact
Moderate effect
Magnesium does contribute to cardiovascular function, but the magnesium oxide form may offer less direct systemic support than more absorbable forms. Its impact here is more general than targeted.
Impact
Moderate effect
Magnesium is essential for muscle function and energy, but the lower systemic absorption of magnesium oxide might limit its effectiveness for optimizing athletic performance and recovery compared to other forms. It provides basic support.
Impact
Moderate effect
Magnesium is key for energy production, but the lower systemic absorption of magnesium oxide may mean less efficient utilization for cellular energy pathways compared to other forms. It provides fundamental support.
Impact
Moderate effect
Magnesium can promote relaxation, but the potential strong laxative effect of magnesium oxide might interfere with sleep rather than enhance it for some individuals. Its sleep benefits are generally indirect and mild.
Ingredients
| Ingredient | Amount per serving |
|---|---|
Magnesium | 420 mg |
Magnesium 62
This product offers a high dose of magnesium oxide, making it a functional choice for specific needs like digestive regularity. However, its lower systemic bioavailability compared to other magnesium forms means it's a more basic option for overall magnesium replenishment.
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Chelated Magnesium 133 mg
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Magnesium Citrate Pure Powder
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Provides magnesium citrate, which has vastly superior bioavailability and absorption compared to magnesium oxide, making it much more effective for general magnesium needs.
80 Performance
Magnesium Chelate Complex 100 mg
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Delivers a chelated magnesium form (amino acid complex) which ensures better systemic absorption compared to the poorly absorbed magnesium oxide.