Herb & supplement monograph

Citicoline Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Citicoline interacts with medications. The heart of this page is the interaction list — every drug Citicoline is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Citicoline is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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Reviewed by licensed pharmacists Sourced from Natural Medicines

On this page

Interaction report

Drugs that interact with Citicoline

0 medications have a known interaction with Citicoline, graded by severity. Select any drug for the full evidence-based detail.

We don’t currently list any known drug interactions for Citicoline. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
Each drug listed above links to the full report for that exact Citicoline combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Monograph

Citicoline: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

Citicoline is a naturally occurring compound involved in making brain cell membranes and the messenger chemical acetylcholine. It is popularly taken for memory, focus, and brain aging, and some research is promising, but high-quality evidence is still limited for most uses. It is generally well tolerated, but you should talk with your pharmacist or doctor before starting it.

Part used: Not applicable (a compound the body makes naturally)
Common forms: Capsules, tablets, powder, sometimes liquid

People commonly use it for

Memory and thinking
Brain health and aging
Stroke recovery support
Focus and attention
Eye health (glaucoma)

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance

OverallUse caution

Generally well tolerated in studies, but long-term safety is not fully established.

PregnancyInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full pregnancy detail

BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Citicoline (also written as CDP-choline) is a compound that your body makes on its own. It plays a role in building and repairing the membranes that surround brain cells. It is not an herb, so it does not come from a plant.

As a supplement, citicoline is made in a lab and sold as capsules, tablets, or powder. Some products use branded forms. People take it hoping to support memory, focus, and overall brain health, and it has been studied in conditions like stroke recovery and age-related memory decline.

How it works

Once in the body, citicoline breaks down into two main building blocks: choline and cytidine. These are used to make phosphatidylcholine, an important part of the membranes that wrap around brain cells.

Citicoline may also help the body make acetylcholine, a chemical messenger involved in memory and learning. Some laboratory and animal studies suggest it may help protect brain cells and support blood flow in the brain.

It is important to know that much of this understanding comes from lab and animal research. How strongly these effects apply to healthy people taking supplements is still not fully clear.

Effectiveness

Does Citicoline work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 20 uses evaluated

2 Possibly effective 1 Leans ineffective 17 Insufficient evidence

How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.

2Likely EffectiveGood evidence, though not yet conclusive.

3Possibly EffectiveSome evidence suggests a benefit.

4Possibly IneffectiveSome evidence it may not help.

5Likely IneffectiveFairly strong evidence it doesn’t help.

6IneffectiveStrong evidence it doesn’t work.

7Insufficient Reliable Evidence to RateToo little research to say either way.

Possibly Effective Age-related cognitive decline