Stack analysis
Magnesium (glycinate) + L-theanine
Sleep-onset and daytime calm stacks targeting GABA-adjacent tone without heavy sedatives.
Confidence
74/100
Registry ingredients
Structured entries from our supplement intelligence registry (not personalized recommendations).
- Magnesium (glycinate / bisglycinate)mineral
Evidence tier: high·Typical label range: RDA ~310-420 mg elemental; supplements often 200-400 mg elemental; oxide vs chelate affects GI tolerance.
- L-Theaninecompound
Evidence tier: medium·Typical label range: Often 100-400 mg.
What this stack claims
Easier sleep onset, reduced nighttime muscle tension, smoother focus when paired with caffeine in daytime stacks.
Biological logic
Magnesium supports neuromuscular relaxation and is commonly marginal in intake; theanine has modest anxiolytic-like effects in some trials and is frequently combined with caffeine to smooth stimulation.
Evidence level
Registry tier for this stack: MEDIUM
Neither ingredient is a guaranteed fix for chronic insomnia (which can be sleep apnea, mood disorder, medication effect, etc.). Evidence is strongest as a low-harm adjunct for mild complaints and for magnesium repletion where diet is low.
Risks
Diarrhea (magnesium dose-form dependent), hypotension additive with antihypertensives, renal failure contraindications for magnesium, sedation stacking with alcohol/benzodiazepines.
Final verdict
**One of the more defensible two-ingredient stacks** for mild sleep/stress support, provided doses stay reasonable and persistent symptoms trigger medical evaluation.
FAQ
- Better morning or night?
- Often night for magnesium glycinate sleep use; theanine is sometimes used morning with caffeine - depends on goal.
- Will it fix insomnia for months?
- Chronic insomnia deserves evaluation (sleep apnea, depression/anxiety, thyroid, substances). Supplements are not a substitute.
- Is magnesium oxide ‘the same’?
- No - oxide is often cheaper and more laxative at similar elemental targets; tolerance and goals differ.