Magnesium glycinate, the form your body absorbs.
400 mg of chelated magnesium glycinate for higher bioavailability and gentler digestion, with glycine's own calming properties for sleep and stress.
How It Works
Magnesium is involved in over 300 enzymatic reactions in the body. It is essential to muscle function, nerve transmission, blood glucose regulation, and the synthesis of proteins and DNA. Despite this, it is one of the most common nutrient deficiencies in adults, primarily because modern food processing significantly reduces magnesium content in staple foods.
The form of magnesium matters. Magnesium glycinate, magnesium bound to the amino acid glycine, is absorbed significantly more efficiently than oxide or citrate forms and is substantially less likely to cause the gastrointestinal side effects associated with cheaper magnesium supplements. Glycine itself has calming properties that complement magnesium's role in sleep and stress regulation.
This formulation is built around what the research supports: the right form, at a dose that moves the needle.
Ingredients
MAGNESIUM (as Magnesium Glycinate)
400 mg per serving (2 capsules)
Magnesium glycinate delivers elemental magnesium bound to glycine, an inhibitory amino acid with its own calming properties. This chelated form bypasses the competitive absorption pathways that limit oxide and citrate forms, resulting in meaningfully higher bioavailability and tissue uptake.*
Other ingredients: Microcrystalline Cellulose, Starch, Colloidal Silicon Dioxide, Talc
Free from: Artificial colours · Preservatives · Gluten · Animal products
Certifications: Vegan · Non-GMO · cGMP Certified
How to Use
Take 2 capsules daily. Best taken 30–60 minutes before sleep to support relaxation and sleep onset.
If you are pregnant, nursing, taking medications, or have a medical condition, consult your healthcare professional before use.
Frequently asked questions
What makes Glycinate different from other Magnesium forms?
Most inexpensive supplements use Magnesium Oxide, which absorbs poorly and commonly causes digestive discomfort. Magnesium Glycinate is bound to glycine, an amino acid, which dramatically improves absorption and is gentle on the gut. The glycine also has a calming effect on the nervous system, which is why this form is preferred for sleep and recovery.
How quickly will I notice a difference in sleep?
Most people notice improved sleep quality within 4 to 8 weeks of consistent use. Some feel a difference on the first night, particularly those who are deficient. Take one to two capsules 30 to 60 minutes before bed for best results.
Can I take Magnesium alongside my other Sierra Vitalis supplements?
Yes, and it pairs well with Vitamin D3+K2 specifically, Magnesium is required for Vitamin D metabolism, so the two work together. If you are also taking Biotin with Zinc, space Magnesium and Zinc two hours apart as they can compete for absorption at high doses.