Drug & supplement interaction

Cannabidivarin (cbdv) + Cefdinir

Cefdinir brand name: Omnicef.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Cannabidivarin (cbdv) and Cefdinir 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 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

Cannabidivarin (cbdv) and Cefdinir

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 Cefdinir and Cannabidivarin (cbdv) 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 Cannabidivarin (cbdv) at all — not against Cefdinir, 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.

Cannabidivarin (cbdv) safety at a glance

Cannabidivarin (cb... overall Not established Human safety data are very limited, so long-term effects are not well understood.
Pregnancy Avoid There is not enough safety information, so it is best avoided during pregnancy.
Breastfeeding Avoid Safety while breastfeeding is unknown, so avoid use.

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

Still wondering about combining Cefdinir and Cannabidivarin (cbdv)? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Cannabidivarin (cbdv) and Cefdinir 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. One of them is worth acting on rather than waiting out — marked below.

  • Kidney problems Worth acting on reported in 11.1% of FDA reports for Cefdinir Additional detail

    Cannabidivarin (cbdv)

    “Orally, azotemia and acute kidney failure have been reported in one patient in a clinical trial who had been taking cannabidivarin 800 mg twice daily for 32 days. Kidney failure resolved after treatment discontinuation.”

    Cannabidivarin (cbdv) · Natural Medicines adverse-effect record, reported in myasthenia gravis.

    1 source cited
    1. 107343. Brodie MJ, Czapinski P, Pazdera L, et al. A Phase 2 Randomized Controlled Trial of the Efficacy and Safety of Cannabidivarin as Add-on Therapy in Participants with Inadequately Controlled Focal Seizures. Cannabis Cannabinoid Res 2021;6(6):528-536. PubMed

    Cefdinir

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

  • Drowsiness / Dizziness / Headache Additional detail

    Cannabidivarin (cbdv)

    “Orally, cannabidivarin has been associated with dizziness, somnolence, and headache. Ataxia, confusion, and dysarthria have been reported in one patient in a clinical trial who had been taking cannabidivarin 800 mg twice daily for 30 days. This patient also experienced other symptoms of intoxication, including arterial hypotension, nystagmus, diplopia, and elevated liver transaminases.”

    Cannabidivarin (cbdv) · Natural Medicines adverse-effect record, reported in cluster headache.

    2 sources cited
    1. 107343. Brodie MJ, Czapinski P, Pazdera L, et al. A Phase 2 Randomized Controlled Trial of the Efficacy and Safety of Cannabidivarin as Add-on Therapy in Participants with Inadequately Controlled Focal Seizures. Cannabis Cannabinoid Res 2021;6(6):528-536. PubMed
    2. 110246. Hurley EN, Ellaway CJ, Johnson AM, et al. Efficacy and safety of cannabidivarin treatment of epilepsy in girls with Rett syndrome: A phase 1 clinical trial. Epilepsia 2022;63(7):1736-1747. PubMed

    Cefdinir

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

  • Diarrhea / Stomach pain / Nausea reported in 6.9% of FDA reports for Cefdinir Additional detail

    Cannabidivarin (cbdv)

    “Orally, cannabidivarin has been associated with diarrhea, nausea, and abdominal pain. Drooling has been reported in one child with Rett syndrome.”

    Cannabidivarin (cbdv) · Natural Medicines adverse-effect record, reported in diarrhea.

    2 sources cited
    1. 107343. Brodie MJ, Czapinski P, Pazdera L, et al. A Phase 2 Randomized Controlled Trial of the Efficacy and Safety of Cannabidivarin as Add-on Therapy in Participants with Inadequately Controlled Focal Seizures. Cannabis Cannabinoid Res 2021;6(6):528-536. PubMed
    2. 110246. Hurley EN, Ellaway CJ, Johnson AM, et al. Efficacy and safety of cannabidivarin treatment of epilepsy in girls with Rett syndrome: A phase 1 clinical trial. Epilepsia 2022;63(7):1736-1747. PubMed

    Cefdinir

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

  • A skin rash Additional detail

    Cannabidivarin (cbdv)

    “Orally, cannabidivarin 800 mg twice daily has been associated with maculopapular rash. The rash resolved with discontinuation of cannabidivarin.”

    Cannabidivarin (cbdv) · Natural Medicines adverse-effect record, reported in myasthenia gravis.

    1 source cited
    1. 107343. Brodie MJ, Czapinski P, Pazdera L, et al. A Phase 2 Randomized Controlled Trial of the Efficacy and Safety of Cannabidivarin as Add-on Therapy in Participants with Inadequately Controlled Focal Seizures. Cannabis Cannabinoid Res 2021;6(6):528-536. PubMed

    Cefdinir

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

Reported for Cannabidivarin (cbdv) but not commonly for Cefdinir: low blood pressure, confusion, tremor or shakiness and unsteadiness.

Effects for Cefdinir come from the ADVERSE REACTIONS section of its FDA label; effects for Cannabidivarin (cbdv) come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 7,629 voluntary FDA FAERS reports for Cefdinir 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.

From our Q&A

Questions About Cannabidivarin (cbdv) or Cefdinir

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Cannabidivarin (cbdv) or Cefdinir, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Cefdinir

This page covers Cannabidivarin (cbdv) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cefdinir page lists 60 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Asarabacca (major), Siberian Cocklebur (major), African Wild Potato (moderate) and Aristolochia (moderate).

By severity: 3 major · 46 moderate · 11 minor.

From our pharmacist’s overview on the Cefdinir page

“Cefdinir (Omnicef) is a short-course antibiotic for ear, sinus, throat, and skin infections, and three of its 60 supplement interactions on file are rated major and deserve genuine care. Two herbs, Siberian cocklebur and asarabacca, can damage the kidneys, an added strain nobody needs while fighting an infection.”

Reviewed by 2 · Jul 18, 2026

Open the Cefdinir interaction page

How much people look this up

Where Cannabidivarin (cbdv) and Cefdinir 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 Cannabidivarin (cbdv)
Steady interest

#1,277 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Cefdinir
Top half

#832 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 Cannabidivarin (cbdv) reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Cannabidivarin (cbdv) and Cefdinir 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 Cannabidivarin (cbdv)

What is Cannabidivarin (cbdv)?

  • Epilepsy and seizures
  • Autism spectrum disorder
  • Rett syndrome
  • Fragile X syndrome
  • Nausea
  • Anxiety

Cannabidivarin (CBDV) is a non-intoxicating compound found in cannabis that is being studied mainly for epilepsy and certain neurodevelopmental conditions. The research is still early, mostly from laboratory and animal studies plus small human trials, so it is not an approved or proven treatment. Talk to your pharmacist or doctor before trying any CBDV product.

Cannabaceae · Compound derived from the flowers and leaves of the cannabis plant · Oils, tinctures, isolates, and research-grade formulations

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

Cannabidivarin (cbdv): dosing

There is no established standard dose for CBDV. The amounts used in research studies were chosen for those specific trials and are not the same as general supplement guidance.If you choose to use a CBDV product, follow the directions on the product label and start low.

From our Cannabidivarin (cbdv) monograph — the full record covers uses, side effects and every documented interaction.

Read the full Cannabidivarin (cbdv) monograph & all interactions
Medication

About Cefdinir

What Is Cefdinir Used For?

Brand name: Omnicef

Cefdinir treats mild to moderate bacterial infections in adults, adolescents, and children caused by susceptible bacteria. It is used for community-acquired pneumonia, acute exacerbations of chronic bronchitis, acute maxillary sinusitis (sinus infection), pharyngitis/tonsillitis (strep throat), and uncomplicated skin and skin structure infections.

In pediatric patients (ages 6 months through 12 years), cefdinir is also used to treat acute bacterial otitis media (middle ear infection). It should only be used for infections that are proven or strongly suspected to be caused by bacteria — not for viral illnesses like the common cold.

Most-Reported Side Effects for Cefdinir

From FAERS, the FDA’s public side-effect reporting system (7,629 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Diarrhea 530 reports
Chronic kidney disease 485 reports
Pneumonia 482 reports
Fatigue 462 reports
Nausea 400 reports
See full Cefdinir drug information
Keep checking

Other Drugs & Cannabidivarin (cbdv)

Browse every other medication we’ve checked against Cannabidivarin (cbdv) — 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
2,829 No interaction
No interaction 2,829 drugs checked — show the list

We also checked Cannabidivarin (cbdv) against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Cannabidivarin (cbdv) list.

See the full Cannabidivarin (cbdv) interactions page
See every supplement checked against Cefdinir, ranked by severity
Evidence & sources

Cannabidivarin (cbdv) References

The 4 references that drive our Cannabidivarin (cbdv) 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. European Medicines Agency. Public summary of opinion on orphan designation: Cannabidivarin for treatment of fragile X syndrome. Available at: https://www.ema.europa.eu/en/documents/orphan-designation/eu/3/18/1977-public-summary-opinion-orphan-designation-
  2. US Food and Drug Administration. Orphan Drug Designations and Approvals. Available at: https://www.accessdata.fda.gov/scripts/opdlisting/oopd/. Accessed on March 19, 2021.
  3. Brodie MJ, Czapinski P, Pazdera L, et al. A Phase 2 Randomized Controlled Trial of the Efficacy and Safety of Cannabidivarin as Add-on Therapy in Participants with Inadequately Controlled Focal Seizures. Cannabis Cannabinoid Res 2021;6(6):528-536. PubMed
  4. Hurley EN, Ellaway CJ, Johnson AM, et al. Efficacy and safety of cannabidivarin treatment of epilepsy in girls with Rett syndrome: A phase 1 clinical trial. Epilepsia 2022;63(7):1736-1747. 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 Cannabidivarin (cbdv) and Cefdinir Together: Common Questions

Is it safe to take Cannabidivarin (cbdv) with Cefdinir?
We do not list a known interaction between Cannabidivarin (cbdv) and Cefdinir. 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 Cannabidivarin (cbdv) and Cefdinir have any of the same side effects?
Yes — our sources link each of them separately to 8 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.
Does Cefdinir interact with any supplements?
Yes. Cefdinir has documented interactions with 60 supplements in our database — Cannabidivarin (cbdv) is not one of them. The Cefdinir interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Cannabidivarin (cbdv) monograph Uses, safety profile, and every drug interaction in one place Cefdinir drug information The full plain-English guide to this medication Cefdinir supplement interactions Every supplement checked against Cefdinir, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 4 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cefdinir and Cannabidivarin (cbdv)?

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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.