---
title: "Magnesium L-Threonate vs Glycinate Dosage Calculator: Exact mg/kg & Weight Scaling (2026 Data) | Nutrition Research Labs"
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description: "Calculate weight-adjusted clinical trial dosages (120 lbs to 240+ lbs) for Magnesium L-Threonate vs Glycinate. Literature-validated minimum effective doses, therapeutic ranges, and timing protocols."
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> **Canonical Source:** [https://nutritionresearchlabs.com/dosage/magnesium-l-threonate-vs-glycinate-sleep-brain](https://nutritionresearchlabs.com/dosage/magnesium-l-threonate-vs-glycinate-sleep-brain)
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> *Calculate weight-adjusted clinical trial dosages (120 lbs to 240+ lbs) for Magnesium L-Threonate vs Glycinate. Literature-validated minimum effective doses, therapeutic ranges, and timing protocols.*

## Human Body Weight Dosage Scaling Reference (120 lbs to 240+ lbs)

Calculated for human metabolic surface area scaling based on L-Threonate: 2,000mg/day | Glycinate: 300–400mg elemental/day:

| Body Weight (lbs / kg) | Calculated Daily Therapeutic Target | Suggested Dosing Frequency | Expected Plasma T½ |
| :--- | :--- | :--- | :--- |
| 120 lbs (54.4 kg) | Lower range of L-Threonate: 2,000mg/day \| Glycinate: 300–400mg elemental/day | L-Threonate taken morning/afternoon for cognitive focus; Bisglycinate taken 45 minutes prior to sleep. | Elemental clearance ~24 hours |
| 140 lbs (63.5 kg) | Standard median: L-Threonate: 2,000mg/day \| Glycinate: 300–400mg elemental/day | L-Threonate taken morning/afternoon for cognitive focus; Bisglycinate taken 45 minutes prior to sleep. | Elemental clearance ~24 hours |
| 160 lbs (72.6 kg) | Standard median: L-Threonate: 2,000mg/day \| Glycinate: 300–400mg elemental/day | L-Threonate taken morning/afternoon for cognitive focus; Bisglycinate taken 45 minutes prior to sleep. | Elemental clearance ~24 hours |
| 180 lbs (81.6 kg) | Standard optimal: L-Threonate: 2,000mg/day \| Glycinate: 300–400mg elemental/day | L-Threonate taken morning/afternoon for cognitive focus; Bisglycinate taken 45 minutes prior to sleep. | Elemental clearance ~24 hours |
| 200 lbs (90.7 kg) | Upper boundary of L-Threonate: 2,000mg/day \| Glycinate: 300–400mg elemental/day | L-Threonate taken morning/afternoon for cognitive focus; Bisglycinate taken 45 minutes prior to sleep. | Elemental clearance ~24 hours |
| 220 lbs (99.8 kg) | Upper boundary of L-Threonate: 2,000mg/day \| Glycinate: 300–400mg elemental/day | L-Threonate taken morning/afternoon for cognitive focus; Bisglycinate taken 45 minutes prior to sleep. | Elemental clearance ~24 hours |
| 240+ lbs (108.9+ kg) | High-end therapeutic range (L-Threonate: 2,000mg/day \| Glycinate: 300–400mg elemental/day) | L-Threonate taken morning/afternoon for cognitive focus; Bisglycinate taken 45 minutes prior to sleep. | Elemental clearance ~24 hours |

## Diagnostic Tools & Monograph Links for Magnesium L-Threonate vs Glycinate

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