Posted by Carpediem Healthcare
on August 14, 2026
There is a reason SLEEPTIME uses magnesium bisglycinate specifically. It is one of the more considered decisions in the formula, and the reasoning is worth knowing.
What bisglycinate means
Magnesium is a mineral, and minerals in supplements are always paired with a carrier. In bisglycinate, that carrier is glycine — the magnesium is chelated, bound to two molecules of this amino acid.
Chelation wraps the mineral inside an amino acid structure, so the body encounters it in a form closer to how minerals arrive in food. Two properties follow, and both matter for something taken at bedtime:
- High bioavailability. It is well absorbed rather than passing through.
- Digestive gentleness. It sits easily, which is exactly what you want from a capsule taken last thing at night.
For a nightly ritual, gentleness is not a luxury. Anything that unsettles you at eleven at night is working against the reason you took it.
The glycine is not just packaging
This is the part most people miss, and it is the most elegant thing about the choice.
Glycine is not an inert wrapper selected for convenience. It is an amino acid in its own right, and one with a long association with rest and relaxation.
So bisglycinate delivers magnesium and glycine together. The carrier chosen for absorption happens to be a carrier that belongs in a sleep formula on its own terms. That is a genuine piece of formulation thinking rather than a marketing angle applied afterwards — and it is why bisglycinate is the natural choice for a night-time product rather than simply a premium one.
What magnesium is doing at night
Magnesium is involved in hundreds of enzymatic reactions in the body and contributes to normal muscle function and normal functioning of the nervous system.
In SLEEPTIME, Magnesium Bisglycinate at 500 mg is included to support muscle relaxation and nervous system calm. It is the physical half of winding down — the active for nights when your mind is ready but your body is still holding the day. Shoulders up. Jaw tight. Legs unwilling to settle.
Different jobs, different forms
Worth knowing: magnesium appears in supplements bound to a range of different carriers, and formulators choose between them according to what the product is for.
A bone and mineral formula, for instance, has different priorities from a bedtime formula — different absorption profiles, different companion nutrients, different quantities. The right magnesium for one is not automatically the right magnesium for another.
Bisglycinate is in SLEEPTIME because the brief was a nightly, gentle, well-absorbed magnesium paired with an amino acid that suits the hour. That is the whole reasoning.
Where it sits in the formula
Magnesium handles the body. The other two actives handle the rest of the evening — L-Theanine at 200 mg for mental calm, covered in the amino acid for a mind that won't switch off, and Melatonin at 10 mg for the body's own sleep-onset rhythm, covered in what melatonin actually does.
Three actives, three parts of the same evening, each declared on the pack with its amount and no proprietary blend. The full formula is in three actives, one night's work.
Using it
Two capsules, 30 to 60 minutes before bedtime, with water. Before bedtime only. Consistency matters more than any single night — sleep rhythms respond to regularity.
More on how we choose ingredient forms on the Ingredient Science page.
This product is a nutraceutical wellness supplement and is not intended to diagnose, treat, cure or prevent any disease. Use only before bedtime. Do not drive or operate machinery after consumption. Consult a healthcare professional before use if you are taking sedatives, antidepressants or any medication, have an autoimmune condition, or have a diagnosed sleep disorder. Not recommended for pregnant or lactating women unless advised by a physician.
