Choline Source
Citicoline
Strong EvidenceDecades of clinical use in stroke and vascular cognitive impairment give citicoline an unusually solid tolerability record; the case for cognitive gain in healthy adults is much weaker than that history suggests.
Recommended Dose
250–500 mg daily
Timing
Morning with food
Mechanism of Action
Provides both choline and cytidine (converted to uridine). Supports phosphatidylcholine synthesis for neuronal membranes while boosting acetylcholine and dopamine levels in the prefrontal cortex.
Side Effects & Safety
Well-tolerated at recommended doses. Rare headache, insomnia, or GI discomfort. Slight stimulatory effect — avoid late-day dosing.
Do not use / talk to a doctor first
- Known hypersensitivity to citicoline
Interactions
Levodopa
Commonly assumed to be a hazard, and it is not one on the available evidence - citicoline has been used ALONGSIDE levodopa therapeutically in Parkinson's disease rather than avoided with it. If you take levodopa, discuss it with your neurologist, because the two are being used for related purposes, not because a dangerous interaction is documented
Source: Effects of choline-containing phospholipids on the neurovascular unit, PMC9541750
Meclofenoxate (centrophenoxine)
Both raise choline availability, so combining them is redundant rather than dangerous
Source: mechanistic
Pregnancy & breastfeeding
Not adequately studied in pregnancy or breastfeeding. Not recommended without medical advice.
Who should avoid / see a doctor
There is no strong contraindication to state here, and inventing one would be worse than saying so. The honest caution is narrower: if you take levodopa or any other Parkinson's medication, raise it with your neurologist, and stop if you get headache or insomnia rather than escalating the dose.
Synergies
Used in These Stacks
See Citicoline inside a full protocol — the stack pages cover when and why to combine it.
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References
- 1.Effects of choline containing phospholipids on the neurovascular unit: a review — Review of choline-containing phospholipids including citicoline, covering their therapeutic use in vascular cognitive impairment and their role alongside standard therapy. (narrative review)
