Drug & supplement interaction

Citicoline + Alectinib Hydrochloride

Alectinib Hydrochloride brand name: Alecensa.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Citicoline and Alectinib Hydrochloride in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Alectinib Hydrochloride states a food rule worth keeping to, and the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Citicoline and Alectinib Hydrochloride

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Alectinib Hydrochloride and Citicoline in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

Worth understanding: our licensed dataset holds no drug-interaction record for Citicoline at all — not against Alectinib Hydrochloride, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Citicoline safety at a glance

Citicoline overall Use caution Generally well tolerated in studies, but long-term safety is not fully established.
Pregnancy Avoid Not enough safety data, so it is best to avoid during pregnancy.
Breastfeeding Avoid Not enough safety data, so it is best to avoid while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Alectinib Hydrochloride and Citicoline? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Citicoline and Alectinib Hydrochloride May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. 2 of them are worth acting on rather than waiting out — marked below.

  • A slow heartbeat / Chest pain Worth acting on Additional detail

    Citicoline

    “Orally, citicoline may cause chest pain, palpitations, hypotension, bradycardia, tachycardia, and peripheral edema in some patients, although the incidence is likely similar to placebo.”

    Citicoline · Natural Medicines adverse-effect record, reported in hypotension.

    4 sources cited
    1. 12130. Spiers PA, Myers D, Hochanadel GS, et al. Citicoline improves verbal memory in aging. Arch Neurol 1996;53:441-8. PubMed
    2. 12131. Fioravanti M, Yanagi M. Cytidinediphosphocholine (CDP-choline) for cognitive and behavioural disturbances associated with chronic cerebral disorders in the elderly. Cochrane Database Syst Rev 2005;(2):CD000269. PubMed
    3. 12132. Conant R, Schauss AG. Therapeutic applications of citicoline for stroke and cognitive function in the elderly: A review of the literature. Altern Med Rev 2004;9:17-31.
    4. 43225. Warach, S., Pettigrew, L. C., Dashe, J. F., Pullicino, P., Lefkowitz, D. M., Sabounjian, L., Harnett, K., Schwiderski, U., and Gammans, R. Effect of citicoline on ischemic lesions as measured by diffusion-weighted magnetic resonance imaging. Citicoline 0 DOI

    Alectinib Hydrochloride

    Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›

  • Blurred vision / A skin rash reported in 3.5% of FDA reports for Alectinib Hydrochloride Additional detail

    Citicoline

    “Orally, intramuscularly, and intravenously, citicoline seems to be well-tolerated.

    Most Common Adverse Effects:

    Orally: Abdominal pain, back pain, blurred vision, constipation, diarrhea, edema, headache, insomnia, nausea, rash.”

    Citicoline · Natural Medicines adverse-effect record, reported in back pain.

    Alectinib Hydrochloride

    Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • Back pain Additional detail

    Citicoline

    “Orally, citicoline may cause back pain in some patients.”

    Citicoline · Natural Medicines adverse-effect record, reported in back pain.

    1 source cited
    1. 43225. Warach, S., Pettigrew, L. C., Dashe, J. F., Pullicino, P., Lefkowitz, D. M., Sabounjian, L., Harnett, K., Schwiderski, U., and Gammans, R. Effect of citicoline on ischemic lesions as measured by diffusion-weighted magnetic resonance imaging. Citicoline 0 DOI

    Alectinib Hydrochloride

    Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›

  • Constipation / Stomach pain / Diarrhea reported in 6.1% of FDA reports for Alectinib Hydrochloride Additional detail

    Citicoline

    “Orally, citicoline may cause abdominal pain, constipation, diarrhea, and nausea in some patients.”

    Citicoline · Natural Medicines adverse-effect record, reported in constipation.

    6 sources cited
    1. 12130. Spiers PA, Myers D, Hochanadel GS, et al. Citicoline improves verbal memory in aging. Arch Neurol 1996;53:441-8. PubMed
    2. 12132. Conant R, Schauss AG. Therapeutic applications of citicoline for stroke and cognitive function in the elderly: A review of the literature. Altern Med Rev 2004;9:17-31.
    3. 98846. Clark BC, Georgekutty J, Berul CI. Myocardial ischemia secondary to synthetic cannabinoid (K2) use in pediatric patients. J Pediatr 2015;167(3):757-61.e1. PubMed
    4. 100988. Ghajar A, Gholamian F, Tabatabei-Motlagh M, et al. Citicoline (CDP-choline) add-on therapy to risperidone for treatment of negative symptoms in patients with stable schizophrenia: a double-blind, randomized placebo-controlled trial. Hum Psychopharmacol. 2
    5. 105730. Castagna A, Manzo C, Fabbo A, Lacava R, Ruberto C, Ruotolo G. The CITIMERIVA Study: CITIcoline plus MEmantina plus RIVAstigmine in Older Patients Affected with Alzheimer's Disease. Clin Drug Investig. 2021 Feb;41(2):177-182. PubMed
    6. 109015. Jeong H, Yoon S, Sung YH, et al. Effects of cytidine-5'-diphosphate choline on gray matter volumes in methamphetamine-dependent patients: A randomized, double-blind, placebo-controlled study. J Psychiatr Res 2021;143:215-221. PubMed

    Alectinib Hydrochloride

    Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • Swelling Additional detail

    Citicoline

    Recorded for Citicoline in the same Natural Medicines adverse-effect record shown under Blurred vision / A skin rash above.

    Alectinib Hydrochloride

    Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›

  • Headache Additional detail

    Citicoline

    “Orally, citicoline may cause headache and insomnia in some patients.”

    Citicoline · Natural Medicines adverse-effect record, reported in cluster headache.

    6 sources cited
    1. 12130. Spiers PA, Myers D, Hochanadel GS, et al. Citicoline improves verbal memory in aging. Arch Neurol 1996;53:441-8. PubMed
    2. 43230. Lukas, S. E., Kouri, E. M., Rhee, C., Madrid, A., and Renshaw, P. F. Effects of short-term citicoline treatment on acute cocaine intoxication and cardiovascular effects. Psychopharmacology.(Berl.) 2001;157(2):163-167. PubMed
    3. 43273. Dinsdale, J. R., Griffiths, G. K., Castello, J., Maddock, J., Ortiz, J. A., and Aylward, M. CDP-choline: repeated oral dose tolerance studies in adult healthy volunteers. Arzneimittelforschung. 1983;33(7A):1061-1065.
    4. 98846. Clark BC, Georgekutty J, Berul CI. Myocardial ischemia secondary to synthetic cannabinoid (K2) use in pediatric patients. J Pediatr 2015;167(3):757-61.e1. PubMed
    5. 100988. Ghajar A, Gholamian F, Tabatabei-Motlagh M, et al. Citicoline (CDP-choline) add-on therapy to risperidone for treatment of negative symptoms in patients with stable schizophrenia: a double-blind, randomized placebo-controlled trial. Hum Psychopharmacol. 2
    6. 109015. Jeong H, Yoon S, Sung YH, et al. Effects of cytidine-5'-diphosphate choline on gray matter volumes in methamphetamine-dependent patients: A randomized, double-blind, placebo-controlled study. J Psychiatr Res 2021;143:215-221. PubMed

    Alectinib Hydrochloride

    Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›

Showing the 10 most notable of 11 shared effects — ranked by how unusual each one is, not just whether both lists mention it.

Reported for Citicoline but not commonly for Alectinib Hydrochloride: a fast or pounding heartbeat, low blood pressure and trouble sleeping.

Effects for Alectinib Hydrochloride come from the ADVERSE REACTIONS section of its FDA label; effects for Citicoline come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 7,249 voluntary FDA FAERS reports for Alectinib Hydrochloride that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

How to take them

Some Alectinib Hydrochloride Products Have a Food Rule — Citicoline Should Not Break It

At least one FDA label for a product containing Alectinib Hydrochloride says to take it with food. If you take Citicoline on an empty stomach out of habit, keep them separate — and take Alectinib Hydrochloride with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Alectinib Hydrochloride products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

Administer ALECENSA with food.

From the Dosage and Administration section of the FDA label we read for Alectinib Hydrochloride — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Everything else you take

See Every Supplement That Interacts With Alectinib Hydrochloride

This page covers Citicoline only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Alectinib Hydrochloride page lists 74 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Beer (major), Siberian Cocklebur (major), Wine (major) and Alfalfa (moderate).

By severity: 4 major · 60 moderate · 10 minor.

From our pharmacist’s overview on the Alectinib Hydrochloride page

“Alectinib (Alecensa) treats ALK-positive lung cancer, and because your liver already has to tolerate this drug, check this page before adding any supplement, not after. Of the 74 ingredients on file, 38 can add stress to the liver, and three of the four major-rated entries (beer, wine, and Siberian cocklebur) are the clearest examples…”

Reviewed by 2 · Jul 18, 2026

Open the Alectinib Hydrochloride interaction page

One more smart check

Taking Citicoline as Part of a Dietary Supplement Product? Check It for Interactions

We hold 464 real supplement products containing Citicoline, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Citicoline. Even though Citicoline itself has no known interaction with Alectinib Hydrochloride, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Citicoline and Alectinib Hydrochloride Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Citicoline
Top 25%

#291 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Alectinib Hydrochloride
Steady interest

#2,395 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Citicoline reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Citicoline and Alectinib Hydrochloride records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Citicoline

What is Citicoline?

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

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.

Not applicable (a compound the body makes naturally) · Capsules, tablets, powder, sometimes liquid

An interaction check asks whether these two react with each other — it does not ask whether Citicoline is a good idea for someone in your situation. Here is what our Citicoline record says about it on its own.

Citicoline: dosing

There is no official standard dose of citicoline for supplement use. Doses used in research have varied widely depending on the condition being studied.The safest approach is to follow the directions on the product label and not exceed the recommended amount.

From our Citicoline monograph — the full record covers uses, side effects and every documented interaction.

Read the full Citicoline monograph & all interactions
Medication

About Alectinib

What Is Alectinib Used For?

Brand name: Alecensa

Alecensa (alectinib) is used in adults with non-small cell lung cancer (NSCLC) whose tumors have a specific genetic change called ALK-positive (anaplastic lymphoma kinase-positive), confirmed by an FDA-approved test.

Alecensa is used in two situations: as adjuvant treatment — meaning after surgical removal of the tumor — in patients whose tumors were at least 4 cm or had spread to nearby lymph nodes; and as treatment for metastatic NSCLC, meaning cancer that has spread to other parts of the body.

Most-Reported Side Effects for Alectinib Hydrochloride

From FAERS, the FDA’s public side-effect reporting system (7,249 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 518 reports
Constipation 445 reports
Rash 257 reports
Dyspnea 234 reports
Disease progression 210 reports
See full Alectinib drug information
Keep checking

Other Drugs & Citicoline

Browse every other medication we’ve checked against Citicoline — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
0Minor
2,829No known interaction
No interaction 2,829 drugs checked — show the list
Evidence & sources

Citicoline References

The 11 references that drive our Citicoline monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Spiers PA, Myers D, Hochanadel GS, et al. Citicoline improves verbal memory in aging. Arch Neurol 1996;53:441-8. PubMed
  2. Fioravanti M, Yanagi M. Cytidinediphosphocholine (CDP-choline) for cognitive and behavioural disturbances associated with chronic cerebral disorders in the elderly. Cochrane Database Syst Rev 2005;(2):CD000269. PubMed
  3. Conant R, Schauss AG. Therapeutic applications of citicoline for stroke and cognitive function in the elderly: A review of the literature. Altern Med Rev 2004;9:17-31.
  4. Warach, S., Pettigrew, L. C., Dashe, J. F., Pullicino, P., Lefkowitz, D. M., Sabounjian, L., Harnett, K., Schwiderski, U., and Gammans, R. Effect of citicoline on ischemic lesions as measured by diffusion-weighted magnetic resonance imaging. Citicoline 0 DOI
  5. Lukas, S. E., Kouri, E. M., Rhee, C., Madrid, A., and Renshaw, P. F. Effects of short-term citicoline treatment on acute cocaine intoxication and cardiovascular effects. Psychopharmacology.(Berl.) 2001;157(2):163-167. PubMed
  6. Dinsdale, J. R., Griffiths, G. K., Castello, J., Maddock, J., Ortiz, J. A., and Aylward, M. CDP-choline: repeated oral dose tolerance studies in adult healthy volunteers. Arzneimittelforschung. 1983;33(7A):1061-1065.
  7. Clark BC, Georgekutty J, Berul CI. Myocardial ischemia secondary to synthetic cannabinoid (K2) use in pediatric patients. J Pediatr 2015;167(3):757-61.e1. PubMed
  8. Ghajar A, Gholamian F, Tabatabei-Motlagh M, et al. Citicoline (CDP-choline) add-on therapy to risperidone for treatment of negative symptoms in patients with stable schizophrenia: a double-blind, randomized placebo-controlled trial. Hum Psychopharmacol. 2
  9. Castagna A, Manzo C, Fabbo A, Lacava R, Ruberto C, Ruotolo G. The CITIMERIVA Study: CITIcoline plus MEmantina plus RIVAstigmine in Older Patients Affected with Alzheimer's Disease. Clin Drug Investig. 2021 Feb;41(2):177-182. PubMed
  10. Jeong H, Yoon S, Sung YH, et al. Effects of cytidine-5'-diphosphate choline on gray matter volumes in methamphetamine-dependent patients: A randomized, double-blind, placebo-controlled study. J Psychiatr Res 2021;143:215-221. PubMed
  11. Nakazaki E, Mah E, Sanoshy K, Citrolo D, Watanabe F. Citicoline and Memory Function in Healthy Older Adults: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. J Nutr 2021;151(8):2153-2160. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Citicoline and Alectinib Hydrochloride Together: Common Questions

Is it safe to take Citicoline with Alectinib Hydrochloride?
We do not list a known interaction between Citicoline and Alectinib Hydrochloride. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Citicoline and Alectinib Hydrochloride have any of the same side effects?
Yes — our sources link each of them separately to 10 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
Should I take Citicoline and Alectinib Hydrochloride at the same time of day?
At least one FDA label for a product containing Alectinib Hydrochloride says to take it with food. If you take Citicoline on an empty stomach out of habit, keep them separate and take Alectinib Hydrochloride with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Alectinib Hydrochloride products can differ — so check the directions on your own box. This is about absorption, not an interaction.
Does Alectinib Hydrochloride interact with any supplements?
Yes. Alectinib Hydrochloride has documented interactions with 74 supplements in our database — Citicoline is not one of them. The Alectinib Hydrochloride interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Still Have a Question About Alectinib Hydrochloride and Citicoline?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.