Magnesium glycinate vs. citrate vs. threonate: which type is right for you?
By Ulta Beauty Advisors · Published August 2026
All products featured are available at Ulta Beauty. This article is for informational purposes only and is not a substitute for professional medical advice. Consult your healthcare provider before beginning any new supplement regimen.
Why the type of magnesium matters
Not all magnesium supplements are the same. The mineral itself is identical, but the compound it is bonded to determines how well the body absorbs it, which tissues it reaches most readily, and what side effects, if any, it causes. Choosing the wrong form for your goal is one of the most common supplement mistakes.
This guide covers the four forms most relevant to Ulta shoppers: glycinate for sleep and stress, citrate for digestion, threonate for cognitive support, and oxide as a budget baseline. For each type, we explain who it is for, what to look for on the label, and which products at Ulta deliver it well.
Magnesium glycinate: best for sleep and stress
Magnesium glycinate is magnesium bonded to glycine, an amino acid with its own calming properties. The combination is well-tolerated by the digestive system and is among the most commonly recommended forms for sleep support, anxiety, and muscle relaxation. It is a reliable starting point for most people who are new to magnesium supplementation.
Glycinate is less likely than citrate or oxide to cause the digestive upset that leads many people to abandon magnesium supplementation before seeing results. The glycine component complements magnesium's role in muscle and nerve relaxation, which is why this form is frequently recommended for evening use.
Who it is for: Anyone using magnesium for sleep, stress relief, PMS symptoms, muscle tension, or general relaxation. If you are not sure which form to start with, glycinate is the right default.
What to look for on the label: "Magnesium glycinate" and "magnesium bisglycinate" refer to the same type of compound. Bisglycinate specifies that the magnesium is bonded to two glycine molecules. Avoid products that use "magnesium glycinate" in the product name but list magnesium oxide as the primary form in the Supplement Facts panel.
Best magnesium glycinate at Ulta
CODEAGE Liposomal Magnesium Bisglycinate with Black Pepper Extract
Magnesium Bisglycinate Capsules | $29.99
Shop CODEAGE Liposomal Magnesium Bisglycinate at Ulta →
CODEAGE's Liposomal Magnesium Bisglycinate combines two absorption-focused features in one capsule. Bisglycinate is a chelated form of magnesium glycinate, meaning the magnesium is bonded to two glycine molecules for stable delivery through the digestive system. The liposomal format encases the magnesium in a phospholipid layer designed to support absorption. Black pepper extract (piperine) is added as a further bioavailability enhancer.
The formula is NSF certified and manufactured in a cGMP facility, which means the dose stated on the label has been independently verified. The 30-serving count and clean ingredient list make it a straightforward daily capsule. For anyone who has tried magnesium glycinate before without noticeable effect, the additional delivery support in this formula is worth trying before moving on.
Key specs: Magnesium Bisglycinate Chelate 350mg · Liposomal Delivery System · Black Pepper Extract (Piperine) · NSF Certified · cGMP Facility · Vegan · Non-GMO
Sparkle Wellness Magnesium Glycinate Capsules
Magnesium Glycinate Capsules | $29.00
Shop Sparkle Wellness Magnesium Glycinate Capsules at Ulta →
Sparkle Wellness Magnesium Glycinate Capsules feature a chelated glycinate form that is well-absorbed and gentle on the stomach. Digestive discomfort is one of the most common reasons people stop taking magnesium before experiencing results, and the glycinate form reduces that barrier.
This is a straightforward capsule for people who want a pure magnesium glycinate with no added ingredients, no flavoring, and no proprietary blends. At 180 count, one bottle covers six months of daily use.
Key specs: Magnesium Glycinate Chelate · Highly Absorbable · Gentle on Stomach · Supports Nervous System and Muscle Relaxation · Supports Sleep Quality
Advisor Tip: Take two capsules 30 to 60 minutes before bed. Evening timing aligns with magnesium glycinate's sleep-supportive properties and allows the glycine component to complement the body's natural wind-down process.
Magnesium citrate: best for digestion and regularity
Magnesium citrate is magnesium bonded to citric acid. It has good overall bioavailability and is commonly used for digestive support and relieving occasional constipation. At supplement doses, the effect is gentle and supports regularity rather than producing a strong laxative response. It is also one of the most widely available forms in general-purpose magnesium supplements.
Magnesium citrate is a practical choice for general magnesium supplementation when sleep or cognitive function are not the primary goals.
Who it is for: Anyone using magnesium primarily for digestive health, regularity, or general magnesium replenishment. If you want a versatile form that covers most magnesium goals at a lower cost, citrate is a practical starting point.
What to look for on the label: "Magnesium citrate" listed as the primary compound. Check that the elemental magnesium dose, not the total compound weight, falls in the 200-400mg range per serving. Some products list the total citrate salt weight, which is higher than the actual elemental magnesium content.
Best magnesium citrate at Ulta
Moon Juice Magnesi-Om Sleep and Relaxation Supplement
Powder Drink Mix | $44.00
Shop Moon Juice Berry Magnesi-Om at Ulta →
Moon Juice Magnesi-Om combines three forms of magnesium in a single evening powder: magnesium gluconate, magnesium acetyl taurate, and magnesium citrate. The citrate component supports gut regularity, making this formula relevant for both digestive support and relaxation goals. L-Theanine (200mg) is added to support calm without causing drowsiness.
The powder format dissolves in water and replaces the capsule habit with a nightly drink. For anyone who wants the digestive benefits of magnesium citrate alongside relaxation and sleep support, this is the most complete option in the citrate section and one of the highest-rated supplements at Ulta.
Key specs: Magnesium Gluconate + Magnesium Acetyl Taurate + Magnesium Citrate · L-Theanine 200mg · Powder Format · Vegan · Gluten-Free · Sustainable Packaging
Ulta Beauty Advisor's Pick: "The powder ritual is what keeps people consistent with this. It feels like an intentional end-of-day moment rather than another supplement to take."
Lemme Relax: Magnesium Complex Soft Chews
Magnesium Soft Chews | $30.00
Shop Lemme Relax at Ulta →
Lemme Relax combines magnesium citrate and magnesium glycinate with KSM-66 Ashwagandha, L-Theanine, and tart cherry in a single soft chew. KSM-66 is a standardized ashwagandha extract included for stress support. Tart cherry contributes to the formula's sleep-oriented positioning. The combination makes this a broader stress-and-sleep formula compared to a standalone magnesium supplement.
The vegetarian, gluten-free chew is individually wrapped for portioning and travel. Adults take one chew twice daily. The format is more portable than a powder and the magnesium citrate base makes it suitable for anyone also using magnesium for digestive regularity.
Key specs: Magnesium Citrate + Magnesium Glycinate · KSM-66 Ashwagandha · L-Theanine · Tart Cherry · Vegetarian · Gluten-Free · No Synthetic Colors · Sustainable Packaging
Magnesium threonate: best for cognitive support
Magnesium L-threonate is the form with the most targeted research on brain magnesium levels. It was developed specifically to cross the blood-brain barrier, which standard magnesium forms are not designed to do.
Who it is for: Anyone prioritizing brain health, memory, mental clarity, or cognitive longevity alongside general magnesium support. It is not the most efficient choice for sleep or digestion goals. Glycinate and citrate are better fits for those uses at a lower cost.
Best magnesium threonate at Ulta
CODEAGE Liposomal Magnesium L-Threonate
Magnesium L-Threonate Capsules | $44.99
Shop CODEAGE Liposomal Magnesium L-Threonate at Ulta →
CODEAGE Liposomal Magnesium L-Threonate uses Magtein, the patented form of magnesium L-threonate. The formula delivers 2,000mg of Magtein per serving in a liposomal capsule, with the phospholipid delivery system derived from non-GMO sunflower oil. Three capsules daily, with or without food.
The formula is vegan, non-GMO, and free from dairy, gluten, and soy. It is manufactured in the USA in a cGMP-certified facility. For anyone whose primary supplement goal is cognitive support, memory, or brain health, this is a clean, well-manufactured threonate option at Ulta with third-party production standards.
Key specs: Magtein Magnesium L-Threonate 2,000mg · Liposomal Phospholipid Complex (Non-GMO Sunflower) · Vegan · Non-GMO · Dairy, Gluten and Soy-Free · cGMP Certified
Moon Juice Neuro Magnesi-Om
Cognitive Magnesium Powder | $74.00
Shop Moon Juice Neuro Magnesi-Om at Ulta →
Moon Juice Neuro Magnesi-Om combines magnesium L-threonate with organic lion's mane mushroom and caffeine in a lemon powder drink. The magnesium L-threonate is included for its brain-targeted properties. Lion's mane adds neuroprotective and alertness support. Caffeine provides the immediate focus layer. The three-ingredient cognitive stack is designed for morning use as a focus drink or coffee alternative.
One rounded teaspoon in 6 ounces of hot or cold water or milk, up to twice daily. Because this formula contains caffeine, Moon Juice recommends morning use. This is a daytime cognitive supplement, not a sleep or relaxation product. For sleep support, use Moon Juice Magnesi-Om from the citrate section instead.
Key specs: Magnesium L-Threonate · Organic Lion's Mane · Caffeine · Vegan · Powder Format
Advisor Tip: This is a morning supplement. The caffeine content means taking it too late in the day can affect sleep. Morning, with or instead of coffee, is the right use case.
Magnesium oxide: the affordable option
Magnesium oxide has the highest elemental magnesium content by weight of any form, but its absorption rate is lower than glycinate, citrate, or threonate.
Who it is for: Anyone who needs basic magnesium supplementation on a limited budget.
Affordable magnesium at Ulta
Her Own Sleepy Girl: Magnesium Drink Mix
Magnesium Sleep Drink Mix | $17.99
Shop Her Own Sleepy Girl at Ulta →
Her Own Sleepy Girl uses magnesium oxide alongside melatonin and tart cherry extract as a multi-ingredient sleep drink. As noted in the oxide section above, magnesium oxide has lower bioavailability than glycinate or citrate. The melatonin and tart cherry are the primary sleep-support ingredients in this formula, with the magnesium providing general mineral coverage.
Mix one scoop in 8 ounces of cold water once daily.
Key specs: Magnesium (as Magnesium Oxide) · Tart Cherry Extract · Melatonin · Powder Drink Mix · Mix 1 Scoop in 8oz Cold Water · Drug-Free · Online Only
How to choose between types
The right magnesium form depends on your primary goal. Use this as a starting point:
For sleep and stress relief: Choose magnesium glycinate. It is a well-absorbed form with high GI tolerance and is the most commonly recommended for relaxation and evening use.
For digestion and regularity alongside relaxation: Choose magnesium citrate.
For brain health and cognitive support: Choose magnesium threonate.
For a budget starting point: Magnesium oxide is the most accessible option.
Can you take more than one form? Yes. A morning threonate for brain health and an evening glycinate for sleep is a common combination. The main consideration is total daily supplemental magnesium. Check with your healthcare provider if you are combining multiple magnesium products.
Frequently asked questions
What is the best magnesium for sleep?
Magnesium glycinate is the most widely recommended form for sleep. The glycine component has calming properties that complement magnesium's role in muscle and nerve relaxation, and the form is gentle on the digestive system.
What is the best magnesium for anxiety and stress?
Magnesium glycinate is the standard recommendation for anxiety and stress support. The glycine component has independent calming properties, and the chelated form is well-tolerated by the digestive system for daily use.
When should I take magnesium?
For sleep and stress goals, take magnesium in the evening, 30 to 60 minutes before bed. For digestive support, take with a meal. For cognitive support (threonate), take in the morning or split across morning and evening as directed on the product label. Magnesium glycinate and citrate can be taken with or without food, though food reduces the chance of stomach upset for sensitive individuals.
What is the difference between magnesium glycinate and magnesium bisglycinate?
They refer to the same type of compound. Bisglycinate specifies that the magnesium atom is bonded to two glycine molecules. In practice, the terms are used interchangeably by supplement brands. Both names indicate the same chelated, well-absorbed, gentle magnesium form.
Related Content: Best Red Light Therapy Masks & Devices, Best Sleep Supplements, Stress Relief Products, Best Feminine Care Products, Nighttime Skin Care Routine, Everything Shower, Best Supplements for Women, Fragrance-Free Vs Hypoallergenic Skin Care, How Long Does It Take Skin Care to Work, How to Use Essential Oils
Explore more Wellness Buying Guides and Beauty Education Articles