Citicoline and medications.
Citicoline is in the Distil supplement database, evidence Grade B. The page below lists every medication we have explicitly assessed it against.
Citicoline, also known as CDP-choline, supplies raw material for acetylcholine and for repairing the phospholipid membranes of brain cells, with a mild effect on dopamine as well. It is used for focus, memory and neuroprotection, and the evidence is Grade B: a Cochrane review by Fioravanti covers cognitive impairment and McGlade's trial looks at healthy attention, so it is reasonably but not strongly supported. The usual dose is 250 to 500mg daily, which is well tolerated; higher doses can bring headache, stomach upset or trouble sleeping. Its interactions are constructive ones rather than risks: it pairs with omega-3 DHA for brain membrane synthesis and with lion's mane as part of a cognitive stack. There are no significant negative drug interactions noted in the source. For someone targeting cognition, it is a steady, low-risk choice, best judged over weeks rather than days and kept earlier in the day if sleep is sensitive.
Below are the 2 documented pairs we have explicitly assessed for Citicoline: 2 amber. The pairs cluster around 1 mechanism: Dopaminergic potentiation (levodopa-sparing). Every call is cited to either a clinical reference (PMID) or the British National Formulary. Anything not listed here is either still to be assessed or beyond our database scope. The checker beneath surfaces assessments by medication, and the missing-item form at the bottom of the page routes any uncatalogued medication into our next curation pass.
Documented interactions
Dopaminergic potentiation (levodopa-sparing)
Citicoline raises dopamine activity in the brain, and in Parkinson's studies it has let people get the same control of symptoms on a lower dose of levodopa, in some cases up to half. This is generally a helpful effect rather than a dangerous one, but it is still an interaction: do not adjust your levodopa dose yourself. If you want to try citicoline, raise it with your Parkinson's team so any change in your levodopa dose is planned and supervised.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Citicoline raises dopamine activity in the brain, and in Parkinson's studies it has let people get the same control of symptoms on a lower dose of levodopa, in some cases up to half. This is generally a helpful effect rather than a dangerous one, but it is still an interaction: do not adjust your levodopa dose yourself. If you want to try citicoline, raise it with your Parkinson's team so any change in your levodopa dose is planned and supervised.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
What this list does not say. Pairs not flagged here are not implicitly safe. They are either not yet in our database, or fall outside our inclusion scope. Use the checker below to surface any medication, and submit a missing item if you take something we have not catalogued.
How we grade severity, choose what's in scope, and what we exclude.
Every call on this page is reasoned. We publish the full rubric for severity tiers, the medication inclusion logic, the evidence grades we accept, and what we deliberately leave out. About three thousand words. Worth reading once if you use this tool more than occasionally.
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This page checks the pairs you enter. The personalised Distil report goes further:
- the same graded, cited interaction check across your whole stack, not just the pairs you thought to type in
- where your current routine may be leaving you short of your goals
- the evidence-backed compounds worth adding, and the ones worth dropping
It's a paid report: £79, or £49 for the first 25 customers. The interactions check is one section of it, and you can read a real one in full before you buy.
See a real sample reportSomething missing?
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