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The LURA team
Scientific documentation
COMPARISON
Corti-Glow vs magnesium tablets
Magnesium is one of the 7 ingredients in Corti-Glow. So why pay for the whole formula when you can just buy magnesium? This page explains the difference — honestly, with numbers.
TL;DR
Magnesium is cheap, effective, and has well-studied effects on sleep and muscles. If your only problem is cramps or a mild deficiency — magnesium for 5-8 € is an excellent choice. Corti-Glow is for women with a more complex picture: stress + insomnia + PMS + sugar cravings. The formula combines magnesium bisglycinate with ashwagandha, myo-inositol, L-theanine and 3 more ingredients — something magnesium alone can't do.
Not all magnesium is equal
Pharmacies carry dozens of magnesium supplements. Most contain oxide — the cheapest form with ~4% absorption. Here's what the different forms mean:
Magnesium oxide
Absorption: ~4%For sleep: WeakPrice: Cheapest
The most common in pharmacies. Barely absorbed.
Magnesium citrate
Absorption: ~16%For sleep: MediumPrice: Cheap
Good value for money, but may cause loose stools.
Magnesium bisglycinate (in Corti-Glow)
Absorption: ~80%+For sleep: ExcellentPrice: Medium
Chelated form — crosses the blood-brain barrier. Doesn't irritate the stomach.
Magnesium L-threonate
Absorption: ~80%+For sleep: GoodPrice: Expensive
Promising form for the brain, but more expensive and with less clinical data.
What magnesium does — and what it can't
Magnesium is a mineral that ~50% of Bulgarians don't get enough of (European Food Safety Authority, 2015). It participates in over 300 enzymatic reactions, including:
What magnesium DOES
- Supports GABA receptors (calming neurotransmitter)
- Relaxes muscles (helps with cramps and PMS pain)
- Boosts natural melatonin production
- Reduces inflammation (with chronic use)
What magnesium CAN'T do
- Doesn't lower cortisol (the stress hormone)
- Doesn't improve insulin sensitivity in PCOS
- Doesn't produce alpha brain waves (L-theanine does)
- Doesn't support the gut microbiome (inulin does)
Corti-Glow includes 670 mg of magnesium bisglycinate (100 mg elemental) — an effective dose for the nervous system. But magnesium is just 1 of 7 ingredients. The other 6 do things magnesium alone can't.
Comparison table
| Criterion | Corti-Glow | Magnesium (alone) | Advantage |
|---|---|---|---|
| Ingredients | 7 ingredients: magnesium bisglycinate + myo-inositol + ashwagandha + L-theanine + inulin + bromelain + vit. B6. | 1 ingredient: magnesium (various forms). | Corti-Glow |
| Form of magnesium | Bisglycinate (chelated form) — high bioavailability ~80%+, doesn't irritate the stomach. | Depends on the product. Most cheap pharmacy brands = oxide (~4% absorption). | Corti-Glow |
| Elemental Mg dose | 100 mg elemental magnesium (from 670 mg bisglycinate). | Usually 200-400 mg elemental Mg (depends on form). | Magnesium |
| Action on stress | Ashwagandha + L-theanine + magnesium work synergistically: cortisol, GABA, alpha waves. | Magnesium alone supports GABA receptors but doesn't lower cortisol. | Corti-Glow |
| Hormonal balance (women) | Myo-inositol (2000 mg) has been studied in PCOS — improves insulin sensitivity and the cycle. | Magnesium helps with menstrual cramps but doesn't address PCOS or insulin resistance. | Corti-Glow |
| Format | Sachet — dissolves in 150ml of water. Wild strawberry and lime flavor. No pills to swallow. | Tablets or capsules (1-3 per day). | Depends |
| Monthly price | 49.99 EUR / 30 sachets (7 ingredients). | 8-25 EUR / 30-60 tablets (1 ingredient). | Magnesium |
| Stomach comfort | Bisglycinate doesn't irritate the stomach. Inulin may cause mild discomfort in the first few days. | Oxide and citrate can cause diarrhea. Bisglycinate — doesn't. | Depends |
Ingredients Corti-Glow
Corti-Glow
7 ingredients: magnesium bisglycinate + myo-inositol + ashwagandha + L-theanine + inulin + bromelain + vit. B6.
Magnesium
1 ingredient: magnesium (various forms).
Form of magnesium Corti-Glow
Corti-Glow
Bisglycinate (chelated form) — high bioavailability ~80%+, doesn't irritate the stomach.
Magnesium
Depends on the product. Most cheap pharmacy brands = oxide (~4% absorption).
Elemental Mg dose Magnesium
Corti-Glow
100 mg elemental magnesium (from 670 mg bisglycinate).
Magnesium
Usually 200-400 mg elemental Mg (depends on form).
Action on stress Corti-Glow
Corti-Glow
Ashwagandha + L-theanine + magnesium work synergistically: cortisol, GABA, alpha waves.
Magnesium
Magnesium alone supports GABA receptors but doesn't lower cortisol.
Hormonal balance (women) Corti-Glow
Corti-Glow
Myo-inositol (2000 mg) has been studied in PCOS — improves insulin sensitivity and the cycle.
Magnesium
Magnesium helps with menstrual cramps but doesn't address PCOS or insulin resistance.
Format Depends
Corti-Glow
Sachet — dissolves in 150ml of water. Wild strawberry and lime flavor. No pills to swallow.
Magnesium
Tablets or capsules (1-3 per day).
Monthly price Magnesium
Corti-Glow
49.99 EUR / 30 sachets (7 ingredients).
Magnesium
8-25 EUR / 30-60 tablets (1 ingredient).
Stomach comfort Depends
Corti-Glow
Bisglycinate doesn't irritate the stomach. Inulin may cause mild discomfort in the first few days.
Magnesium
Oxide and citrate can cause diarrhea. Bisglycinate — doesn't.
When plain magnesium tablets are enough
You don't always need a complex formula. Plain magnesium is enough if:
- You have a magnesium deficiency: Cramps, eyelid twitches, irritability — pure magnesium (bisglycinate or citrate, 300-400 mg elemental) will do the job.
- You don't have a stress problem: If you sleep well most of the time and just want to top up your mineral balance — magnesium is enough.
- Budget is the priority: Magnesium bisglycinate from a good brand: 8-13 €/month. Accessible and effective.
- You prefer to combine things yourself: Some people like to pick ingredients separately. If you already take ashwagandha + L-theanine from another source — you don't need Corti-Glow.
When Corti-Glow is the better choice
Corti-Glow isn't "magnesium with seasoning". The formula is for women with more complex needs:
- Stress + insomnia: If you can't fall asleep because your mind won't stop — magnesium alone isn't enough. Ashwagandha lowers cortisol, L-theanine produces alpha brain waves (relaxation without drowsiness).
- PMS or PCOS: Myo-inositol (2000 mg) is another axis — improves insulin sensitivity and the cycle. Magnesium doesn't do that.
- Evening sugar cravings: Myo-inositol and magnesium together work on the insulin axis. Many women report reduced sugar cravings after 2-3 weeks.
- You don't want 5 separate supplements: If you buy ashwagandha + magnesium + L-theanine + myo-inositol + inulin separately: ~80-120 EUR/month. Corti-Glow combines them in 1 sachet for 49.99 EUR.
- You hate pills: A sachet with wild strawberry and lime flavor is more pleasant than swallowing 3 capsules.
Bioavailability: why form matters
"Bioavailability" means how much of the dose you take actually reaches your cells. With magnesium, the difference is dramatic:
Magnesium oxide (the cheapest) has bioavailability of ~4% (Firoz & Graber, 2001, Magnesium Research). From 400 mg of magnesium oxide, your body absorbs only ~16 mg. The remaining 384 mg passes directly through the stomach (which is why oxide has a laxative effect).
Magnesium bisglycinate (in Corti-Glow) is a chelated form — magnesium bound to the amino acid glycine. This bond allows absorption via the amino acid transport pathway, bypassing competition with other minerals. Result: ~80%+ bioavailability.
Bonus: glycine itself is an inhibitory neurotransmitter. A study by Yamadera et al. (2007, Sleep and Biological Rhythms) shows that 3g of glycine before bed improves subjective sleep quality and reduces next-day drowsiness.
Questions and answers
Corti-Glow contains magnesium. Can I also take extra magnesium separately?
Yes, you can. Corti-Glow contains 100 mg elemental magnesium (bisglycinate). The recommended daily intake is 300-400 mg. If you want a higher dose, you can add 200-300 mg of magnesium from another source. Caution: don't exceed 600 mg elemental Mg per day without consulting a doctor.
Why does Corti-Glow use bisglycinate instead of citrate?
Magnesium bisglycinate is a chelated form, bound to the amino acid glycine. Advantages: 1) Higher bioavailability — absorbs better from the stomach. 2) Glycine itself is a calming agent — a 2015 study (Bannai et al.) shows improved sleep quality from 3g of glycine. 3) Doesn't cause diarrhea, unlike citrate and oxide.
If magnesium is so important, why does Corti-Glow contain only 100 mg?
Because Corti-Glow isn't a magnesium supplement — it's a formula of 7 ingredients. Magnesium is one of the components. 100 mg of bisglycinate is an effective dose for the nervous system (sleep studies use 200-500 mg, but the combination with L-theanine and ashwagandha amplifies the effect). If you have a magnesium deficiency, supplement with a separate product.
Magnesium is 5 times cheaper. Why should I choose Corti-Glow?
If your only problem is mild muscle discomfort or cramps — magnesium for 5-8 € is perfectly sufficient. But if you have sleep issues, stress, PMS or sugar cravings — magnesium alone doesn't address cortisol (ashwagandha), hormonal balance (myo-inositol), or evening brain hyperactivity (L-theanine). Corti-Glow replaces 4-5 separate supplements.
More than magnesium. 7 ingredients in 1 sachet.
Magnesium bisglycinate + ashwagandha + myo-inositol + L-theanine + inulin + bromelain + vitamin B6. Wild strawberry and lime flavor.