L-Serine
L-Serine
A non-essential amino acid critical for brain health, phosphatidylserine synthesis, and potential neuroprotection in ALS and other conditions.
L-Serine is a non-essential amino acid that plays crucial roles in the central nervous system. It's a precursor to phosphatidylserine, glycine, cysteine, and D-serine (an NMDA receptor co-agonist). Research has shown interest in high-dose L-serine for neurodegenerative conditions like ALS, where it may slow disease progression. It's also important for myelin formation and overall brain health.
Mechanisms of Action
Phosphatidylserine Precursor
Required for PS synthesis
D-Serine Production
Precursor to NMDA co-agonist
Myelin Support
Required for myelin synthesis
Recommended Dose
3-15g daily (higher for neurological conditions)
Loading: ALS studies use 15-30g/day in divided doses
Optimal Timing
- Divided doses throughout day
- With or without food
Can be taken without food
Best Form
L-Serine powder
Alternatives: L-Serine capsules
Powder is more practical for higher doses. Has mild sweet taste and dissolves in water.
Duration
Minimum: 8 weeks
Optimal: 24 weeks
Cycling: Not required
Note: Higher doses for neurological conditions should be supervised. Can be taken any time; some take before bed for glycine conversion.
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Brain Support
Support for cognitive function and brain health
Neuroprotection
Potential protection of nerve cells
Sleep Support
May improve sleep quality (converts to glycine)
High-dose L-serine is being studied; work with neurologist
Who Should NOT Take This
- Known allergy or hypersensitivity to L-Serine or related compounds
Drug Interactions
May influence D-serine levels which affect NMDA receptors; consult neurologist
L-serine converts to D-serine, an NMDA co-agonist; inform healthcare provider
Possible Side Effects
Tip: Divide into smaller doses; take with food
Warnings
- Very high doses should be supervised
- Most research on neurological conditions is still emerging
Top studies from 40+ peer-reviewed papers
Brouwer A et al. • Neuroscience and biobehavioral reviews (2013)
“All rights reserved.”
Key Findings:
- Blood serine levels were found to be significantly higher in SCZ patients compared to healthy controls (SDM=0.280 (0.021-0.540), p=0.034; N=1671 subjects), whereas CSF serine, l-serine, d-serine, glycine, alanine, proline, and aspartate levels did not differ.
- Stratification by sex suggested that the case-control difference in blood serine levels particularly applies to male subjects.
- These results provide support for blood serine level aberrations in SCZ patients and warrant further research to disentangle the involvement of serine with SCZ in both sexes.Copyright © 2013 Elsevier Ltd.
- All rights reserved.
Imafuku F et al. • Nutrients (2023)
“This study suggests the possibility of personalizing sleep-support supplementation based on personal life habits, sleep conditions, and sleep problems, in addition to the known efficacy of dietary supplements.”
Key Findings:
- All the tested supplements were found to ameliorate sleep problems significantly (Analysis 1).
- In Analysis 2, the PCs specific to improved subjects were found to differ depending on the dietary supplements and sleep problems.
- In addition, subjects who consumed dairy products often showed improvement in their sleep problems with all the tested supplements.
- This study suggests the possibility of personalizing sleep-support supplementation based on personal life habits, sleep conditions, and sleep problems, in addition to the known efficacy of dietary supplements.
Bonvento G et al. • Cell metabolism (2021)
“All rights reserved.”
Key Findings:
- The paradigm of this biological feature is the astrocyte-neuron couple, in which the glycolytic metabolism of astrocytes contrasts with the mitochondrial oxidative activity of neurons.
- Astrocytes generate abundant mitochondrial reactive oxygen species and shuttle to neurons glycolytically derived metabolites, such as L-lactate and L-serine, which sustain energy needs, conserve redox status, and modulate neurotransmitter-receptor activity.
- Conversely, early disruption of this metabolic cooperation may contribute to the initiation or progression of several neurological diseases, thus requiring innovative therapies to preserve brain energetics.Copyright © 2021 Elsevier Inc.
- All rights reserved.
Hornemann T • Neuroscience letters (2021)
“All rights reserved.”
Key Findings:
- About 50 % of the brain dry weight consist of lipids, which makes it the second highest lipid rich tissue after adipose tissue.
- However, the role of lipids in neurological disorders in particular of the peripheral nerves is not well understood.
- This review aims to provide an overview about the role of lipids in the disorders of the PNS.Copyright © 2020 The Author.
- Published by Elsevier B.V.
Murtas G et al. • Cellular and molecular life sciences : CMLS (2020)
“We believe that an in-depth investigation of these enzymes is crucial to identify the molecular mechanisms involved in modulating concentrations of the serine enantiomers and for studying the interplay between glial and neuronal cells and also to determine the most suitable therapeutic approach for various diseases.”
Key Findings:
- Indeed, the phosphorylated pathway is strictly linked to cancer.
- Moreover, L-serine has been suggested as a ready-to-use treatment, as also recently proposed for Alzheimer's disease.
- Here, we present our current state of knowledge concerning the three mammalian enzymes of the phosphorylated pathway and known mutations related to pathological conditions: although the structure of these enzymes has been solved, how enzyme activity is regulated remains largely unknown.
Study Type Distribution
Goals This Supplement Supports
Related Goals
This information is for educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before starting any supplement.