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Uridine Monophosphate
A pyrimidine nucleotide and precursor for brain membrane phospholipids, marketed as a nootropic. The honest picture: nearly all positive HUMAN evidence is for the COMBINATION of uridine + DHA/EPA + choline (the Souvenaid / Fortasyn Connect medical food) in early Alzheimer's — and even there the effect is small. Standalone uridine human evidence is essentially preclinical.
What the evidence says
Most Uridine Monophosphate studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from medium-quality randomised trials published 2008–2017.
Based on 3 studies · 1 RCT
Confidence
LowBy outcome
Uridine Monophosphate has an evidence score of 3/10 — emerging evidence based on 3 indexed studies. A pyrimidine nucleotide and precursor for brain membrane phospholipids, marketed as a nootropic. The honest picture: nearly all positive HUMAN evidence is for the COMBINATION of uridine + DHA/EPA + choline (the Souvenaid / Fortasyn Connect medical food) in early Alzheimer's — and even there the effect is small. Standalone uridine human evidence is essentially preclinical. Representative study: PMID 27767993.
The commonly studied dose of Uridine Monophosphate is No human-trial-validated standalone dose; nootropic users commonly take 150-500 mg/day. Individual needs vary — start at the lower end of the range and adjust based on how you respond.
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Last reviewed June 2026 · evidence from 3 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Uridine monophosphate (UMP) is a pyrimidine nucleotide that, together with choline and the omega-3 fatty acid DHA, supplies the precursors brain cells use to build phosphatidylcholine and other membrane phospholipids (the Kennedy pathway). This 'membrane synthesis' rationale is the basis for its use as a nootropic and in early Alzheimer's disease. The crucial honesty point: the clinical evidence is almost entirely for the COMBINATION, not uridine alone. The Souvenaid medical food (Fortasyn Connect — uridine monophosphate plus DHA, EPA, choline, phospholipids, B-vitamins, and antioxidants) has been tested in randomized controlled trials in mild Alzheimer's, with small effect sizes on memory in the mildest patients and no effect in mild-to-moderate disease. Animal studies show UMP — especially combined with DHA — improves memory and raises brain phospholipid levels. But there is essentially NO robust standalone-uridine human efficacy trial for memory or neuroprotection. So UMP is mechanistically reasonable and part of a modestly-evidenced combination product, but on its own it is an emerging, largely preclinical supplement.
Supplies uridine for the Kennedy pathway, providing precursors (with choline and DHA) for phosphatidylcholine and synaptic membrane formation.
Uridine and its nucleotides act on P2Y receptors and may influence neuronal signaling — mechanistic, not yet a proven clinical effect.
How Uridine Monophosphate works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
No human-trial-validated standalone dose; nootropic users commonly take 150-500 mg/day
Take with food
| Form | Type |
|---|---|
| 💊Uridine monophosphate | Recommended |
| 💊Triacetyluridine (TAU) | Alternative |
Best evidence is for the uridine + DHA + choline combination, not standalone UMP.
Minimum: 12 weeks
Optimal: 24 weeks
Cycling: Not required
Note: Commonly taken with food, often alongside choline and an omega-3 source.
Dose-response data unavailable. The current published research for Uridine Monophosphate does not provide sufficient dose-specific outcome data to generate reliable dose-response curves.
Refer to the Dosage & Timing section above for recommended dose ranges based on available evidence.
Small memory effect in mild Alzheimer's as part of the Souvenaid combination, not standalone UMP.
Standalone uridine memory benefits are shown mainly in rodents, not in humans.
Use caution — nucleotide metabolism could theoretically affect uric acid.
Not studied — avoid.
Older reports suggest uridine/nucleotide supplementation could theoretically interact with Parkinson's medication; data are limited — use caution.
Tip: Take with food; reduce dose
DHA from omega-3 is a co-precursor with uridine for membrane phospholipid synthesis; the positive human trials combined the two.
Membrane-synthesis support — the combination is what the Alzheimer's RCTs actually tested.
Choline is the third precursor in the Kennedy pathway alongside uridine and DHA.
Completes the uridine + DHA + choline triad used in Souvenaid/Fortasyn Connect.
Citicoline (CDP-choline) yields both choline and cytidine/uridine intermediates feeding the same membrane-synthesis pathway.
Overlapping support for phosphatidylcholine and synaptic membrane formation.
The best time to take Uridine Monophosphate is with meals. Take it with food. Often taken with food; note that no standalone-UMP human efficacy trial anchors this dose.
Uridine Monophosphate is generally safe at recommended doses, with a few precautions worth noting. The most commonly reported side effects are mild GI upset or headache. Use caution if any of these apply to you: Pregnancy/breastfeeding (not studied); Gout / hyperuricemia (theoretical — uridine is a nucleotide and could affect purine/pyrimidine metabolism).
Dual precursor to acetylcholine and phosphatidylcholine — enhances memory, focus, and brain cell membrane repair.
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