Calcium/Magnesium Citrate, 100 Capsules
100 Capsules
May be a fit for
- Adults seeking combined calcium and magnesium citrate in a single capsule
- Individuals supporting bone density with highly absorbable citrate mineral forms
- Those with sensitive digestion preferring citrate over oxide mineral forms
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Calcium/Magnesium Citrate by Allergy Research Group delivers both minerals in citrate form, a well-absorbed organic salt that supports bone density, muscle function, and nervous system balance. This pairing is designed for individuals seeking foundational mineral support with attention to bioavailability.
Why It's Worth Considering: Allergy Research Group formulates for clinically-oriented practitioners, and the citrate form here is chosen specifically for its absorption advantage over oxide or carbonate forms, particularly relevant for those with lower stomach acid.
Allergy Research Group · 100 CapsulesMake it part of your routine.
As a dietary supplement, 1 capsule one to three times daily between meals, or as directed as a healthcare practitioner.
Read the complete labelProduct details
Supplement facts & complete label
Serving Size:
1 Capsules
Amount Per Serving:
Calcium ... 100mg
(as Calcium Citrate)
Magnesium ... 100mg
(as Magnesium Citrate)
Other Ingredients:
Hydroxypropyl methylcellulose, microcrystalline cellulose, magnesium stearate, stearic acid.
These nutrients are of the highest quality and purity obtainable, and do not contain preservatives, diluents, or artificial additives.
This statement has not been evaluated by the U.S. Food and Drug administration. The product is not intended to diagnose, treat, cure, or prevent any disease.
Label directions
As a dietary supplement, 1 capsule one to three times daily between meals, or as directed as a healthcare practitioner.
Source: authorized supplier original manufacturer label · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Who it may suit
May be a fit for
- Adults seeking combined calcium and magnesium citrate in a single capsule
- Individuals supporting bone density with highly absorbable citrate mineral forms
- Those with sensitive digestion preferring citrate over oxide mineral forms
- Practitioner protocols requiring dual calcium-magnesium citrate supplementation support
Considerations
- Severe kidney disease (impaired Mg excretion)
- Taking antibiotics — separate by 2+ hours
- Myasthenia gravis
- Already taking high-dose magnesium from another source
Compatibility & interactions
Works Well With
Take Separately From
What to expect over time
Sleep Improvement
Faster sleep onset, deeper REM
Cramp Relief
Reduced nighttime cramps and muscle tension
Mood & Calm
Lower baseline anxiety, improved stress resilience
Serum Optimization
Measurable RBC magnesium improvement
Based on clinical research on magnesium supplementation. Effects are cumulative with consistent daily use.
Compare the options
Compare Magnesium Forms
Which form is right for you?
| Feature | Glycinate | Citrate | Oxide | L-Threonate | Taurate |
|---|---|---|---|---|---|
| Bioavailability | High (chelated) | Moderate-High | Low (4-5%) | Moderate | Moderate-High |
| Best For | Sleep, anxiety, cramps | Constipation, general | Budget (low absorption) | Cognitive function | Heart health |
| GI Tolerance | Excellent | Moderate | Poor (laxative) | Good | Good |
| Laxative Effect | None | Mild–Moderate | Strong | None | None |
| Evidence | Strong | Strong | Weak | Emerging | Moderate |
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A few useful answers.
Research & further reading
More category questions
What is the best form of magnesium to take?
Magnesium glycinate (bisglycinate chelate) is widely considered the best form for sleep, anxiety, and muscle cramps due to high bioavailability and zero laxative effect. Citrate is better for constipation. Threonate may be superior for cognitive function as it crosses the blood-brain barrier. Oxide has only 4-5% absorption and is primarily a laxative.
Does magnesium glycinate cause diarrhea?
No. Unlike magnesium citrate and oxide which draw water into the intestines (osmotic laxative effect), glycinate is chelated and absorbed through a different pathway that does not affect GI motility. It is the most GI-friendly magnesium form available.
When is the best time to take magnesium?
Take 1-2 hours before bed for sleep benefits. The glycine component promotes relaxation via GABA receptor activity. For general supplementation, any time works — glycinate does not require food for absorption.
How do I know if I am magnesium deficient?
Standard blood tests (serum magnesium) are unreliable — only 1% of body magnesium is in the blood. Signs include muscle cramps, poor sleep, anxiety, eye twitches, chocolate cravings, and headaches. Since 80%+ of adults are suboptimal, supplementation is generally recommended.
Can I take magnesium with other supplements?
Yes, but separate from zinc, calcium, and iron by 2+ hours (they compete for absorption). Magnesium pairs well with Vitamin D3, K2, and B6 taken together.
How much magnesium should I take daily?
The RDA is 310-420mg/day for adults. Most functional medicine practitioners recommend 400-600mg for therapeutic benefit. Start with the product's recommended dose and adjust based on response.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.