Comparison
Citicoline vs Nicotinamide Riboside
Side-by-side of Citicoline and Nicotinamide Riboside. Every row below is pulled from the compound schema and will update as our data grows. For deeper reads, follow through to each compound page.
Citicoline
Citicoline supplement profile: CDP-choline as a phosphatidylcholine precursor, Cognizin dosing 250-2000 mg, cognition trials, stroke recovery evidence.
Nicotinamide Riboside
Nicotinamide riboside (NR) is the most-studied NAD+ precursor in humans. Sold as Niagen by Chromadex; raises plasma NAD+ 30-60% at 250-1,000 mg/day.
Effects at a glance
Citicoline
- •Choline donor and phosphatidylcholine precursor; oral bioavailability roughly 99%
- •Standard prescription medication for stroke recovery and vascular cognitive impairment in much of the world
- •Healthy-adult cognitive trials (Cognizin) report small gains in attention and working memory at 250 to 500 mg/day
- •ICTUS trial (n=2,298) was negative on stroke recovery in the modern thrombolysis era
- •Lower per-gram choline content than alpha-GPC (~18% vs ~40%), meaning smaller TMAO load at equivalent dose
- •Long uridine half-life (~56 hours) supports once or twice daily dosing
Nicotinamide Riboside
- •Most-studied NAD+ precursor in human trials; the original Niagen formulation by Chromadex
- •Plasma NAD+ rises 30-60% at 250-1,000 mg/day across multiple human PK trials
- •Martens 2018 reported reduced BP and arterial stiffness at 500 mg/day for 6 weeks
- •Dollerup 2018 found no insulin sensitivity change despite plasma NAD+ rise
- •Tissue NAD+ rise inconsistent; hard clinical endpoints not yet measured
- •Larger human safety database than NMN; comparable mechanistic effects
Side-by-side
| Attribute | Citicoline | Nicotinamide Riboside |
|---|---|---|
| Category | supplement | supplement |
| Also known as | CDP-choline, cytidine 5'-diphosphocholine, Cognizin | NR, Niagen, nicotinamide riboside chloride |
| Half-life (hr) ↗ | 56 | 8 |
| Typical dose (mg) ↗ | 500 | 500 |
| Dosing frequency | 1 to 2 times daily | daily, typically morning |
| Routes | oral, intravenous | oral |
| Onset (hr) | 1 | 1 |
| Peak (hr) | 2 | 4 |
| Molecular weight | 488.32 | 255.25 |
| Molecular formula | C14H26N4O11P2 | C11H15N2O5 |
| Mechanism | Hydrolyzed to cytidine and choline after absorption; both cross the blood-brain barrier and are recombined intracellularly to reform CDP-choline, supporting phosphatidylcholine synthesis and acetylcholine production. | NAD+ precursor via salvage pathway. Phosphorylated to NMN by nicotinamide riboside kinase (NRK), then converted to NAD+. Substrate for sirtuins, PARPs, and CD38. |
| Legal status | Dietary supplement (US, Cognizin GRAS); prescription medication in most of the world | OTC dietary supplement |
| WADA status | allowed | allowed |
| DEA / Rx | OTC supplement (US); Rx in most of the world | OTC supplement |
| Pregnancy | Insufficient data for routine use | Insufficient data at supplement doses |
| CAS | 987-78-0 | 1341-23-7 |
| PubChem CID | 13804 | 439924 |
| Wikidata | Q411470 | Q3343054 |
Safety profile
Citicoline
Common side effects
- mild GI upset
- headache
- restlessness
- occasional insomnia with evening dosing
Contraindications
- concurrent strong anticholinergic therapy
- established cardiovascular disease (TMAO concern, smaller than alpha-GPC)
Interactions
- anticholinergic medications: partial mutual antagonism(minor)
- cholinesterase inhibitors: additive cholinergic effect(minor)
- antimetabolite chemotherapy (5-FU): theoretical cytidine pathway interaction(minor)
Nicotinamide Riboside
Common side effects
- mild GI upset (rare)
- headache (rare)
Contraindications
- pregnancy / lactation (insufficient data)
- active cancer (theoretical, no contraindicating data)
Interactions
- pterostilbene: complementary sirtuin pathway (Basis combination)(minor)
- TMG (trimethylglycine): methylation support during high NAD+ precursor dosing(minor)
Which Should You Take?
Nicotinamide Riboside comes out ahead for most readers on the criteria we weight: 3 catalogued goals, OTC dietary supplement, oral dosing, with a Tier-A outcome catalogued. Citicoline is the right call when one of the conditionals below applies.
- → If your priority is focus or working memory, pick Citicoline.
- → If your priority is stroke recovery, pick Citicoline.
- → If your priority is healthspan extension, pick Nicotinamide Riboside.
- → If your priority is energy and stamina, pick Nicotinamide Riboside.
Edge case: Half-lives differ materially (Citicoline ~56 hr vs Nicotinamide Riboside ~8 hr). Citicoline reaches steady state faster; Nicotinamide Riboside is easier to dial in if tolerability is uncertain.
Default choice: Nicotinamide Riboside. Lower friction to source, a Tier-A evidence outcome catalogued, and broader goal coverage. Reach for Citicoline only if your priority sits squarely in the goals it owns above.
This verdict is generated from each compound's schema (goals, legal status, evidence outcomes, dosing route). It updates automatically as our compound data evolves; the deeper read sits on each individual compound page.
Common questions
What is the difference between Citicoline and Nicotinamide Riboside?
Citicoline and Nicotinamide Riboside differ in category (supplement vs supplement), mechanism, and typical dosing. See the side-by-side table for full details.
Which has a longer half-life, Citicoline or Nicotinamide Riboside?
Citicoline half-life is 56 hours; Nicotinamide Riboside half-life is 8 hours.
Can you stack Citicoline with Nicotinamide Riboside?
Stack compatibility depends on mechanism overlap, legal status, and individual response. Check each compound page for specific interactions and contraindications before combining.
Go deeper