Drug & supplement interaction

Tinospora Cordifolia + Aspirin, Codeine Phosphate, Phenobarbital

Aspirin, Codeine Phosphate, Phenobarbital brand name: Phenaphen.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Tinospora Cordifolia has a moderate interaction with Aspirin, Codeine Phosphate, Phenobarbital. Theoretically, Tinospora cordifolia might increase levels of drugs metabolized by CYP2D6.

Read the full interaction report
SeverityModerate
LikelihoodPossible
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Tinospora Cordifolia and Aspirin, Codeine Phosphate, Phenobarbital

Here is the interaction we found between these two, with the evidence behind it.

Moderate

CYTOCHROME P450 2D6 (CYP2D6) SUBSTRATES

Why this applies to Aspirin, Codeine Phosphate, Phenobarbital

Aspirin, Codeine Phosphate, Phenobarbital falls under CYTOCHROME P450 2D6 (CYP2D6) SUBSTRATES — the group Tinospora Cordifolia interacts with.

Theoretically, Tinospora cordifolia might increase levels of drugs metabolized by CYP2D6.
In vitro research shows that Tinospora cordifolia extract inhibits CYP2D6 at high concentrations. However, this interaction has not been reported in humans.
Severity Moderate Likelihood Possible Evidence D

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.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

This combo pill contains codeine, and that's the part worth thinking about here. Codeine is a prodrug, meaning your body has to switch it on using a liver enzyme called CYP2D6 to make morphine, which is what actually relieves pain. Lab studies hint that Tinospora cordifolia (Giloy) might block CYP2D6. If that happened, you'd convert less codeine into morphine, so you could get less pain relief rather than more.

Here's the reassuring part: this is only seen in test-tube studies at high concentrations, and it hasn't been reported in real people. The aspirin and phenobarbital pieces aren't the concern with this particular interaction. Still, before pairing Giloy with this medicine, it's worth a quick chat with your pharmacist or doctor, especially since Tinospora has been linked to liver injury.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Sahu R, Ahmed T, Sangana R, Punde R, Subudhi BB. Effect of Tinospora cordifolia aqua-alcoholic extract on pharmacokinetic of glibenclamide in rat: an herb-drug interaction study. J Pharm Biomed Anal. 2018;151:310-6. doi: 10.1016/j.jpba.2018.01.010. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction 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.
  • PossibleInteraction 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.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Tinospora Cordifolia Also Interacts With Other Medications

Tinospora Cordifolia has 611 moderate known drug interactions in our database — the Aspirin, Codeine Phosphate, Phenobarbital one above is one of them. If you take anything else, check it against the full list below.

Moderate 611 No known interaction 2,219 (incl. Aspirin, Codeine Phosphate, Phenobarbital)
Taking anything else?

Check Another of Your Medications Against Tinospora Cordifolia

Covers the 2,830 medications we’ve checked against Tinospora Cordifolia. Pick one to open its full report.

Everything else you take

See Every Supplement That Interacts With Aspirin, Codeine Phosphate, Phenobarbital

This page covers Tinospora Cordifolia only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Aspirin, Codeine Phosphate, Phenobarbital page lists 352 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: 1,4-butanediol (major), Activated Charcoal (major), Asarabacca (major), Beer (major) and Danshen (major).

By severity: 12 major · 304 moderate · 36 minor.

From our pharmacist’s overview on the Aspirin, Codeine Phosphate, Phenobarbital page

“Alcohol is the entry I would flag first with Phenaphen (aspirin, codeine phosphate, phenobarbital): beer or wine layered onto codeine and phenobarbital can deepen sedation and, at worst, slow breathing. This medication deserves real caution with supplements.”

Reviewed by 2 · Jul 18, 2026

Open the Aspirin, Codeine Phosphate, Phenobarbital interaction page

One more smart check

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

We hold 393 real supplement products containing Tinospora Cordifolia, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Tinospora Cordifolia. Your product may carry other ingredients that interact with Aspirin, Codeine Phosphate, Phenobarbital too, on top of Tinospora Cordifolia — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Tinospora Cordifolia and Aspirin, Codeine Phosphate, Phenobarbital 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 Tinospora Cordifolia
Top 25%

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

29 days ago today
Medication Aspirin, Codeine Phosphate, Phenobarbital
Steady interest

#1,956 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.

Supplement

About Tinospora Cordifolia

What is Tinospora Cordifolia?

  • Immune support
  • Fever
  • Blood sugar support
  • General wellness and 'rejuvenation'
  • Allergic rhinitis
  • Inflammation

Tinospora cordifolia, known as Guduchi or Giloy in Ayurvedic medicine, is a climbing plant traditionally used to support immunity and treat fevers. Early laboratory and small human studies suggest possible immune and blood sugar effects, but high-quality evidence is limited, and there have been reports of liver injury. Talk with your pharmacist or doctor before using it.

Read the full Tinospora Cordifolia monograph & all interactions
Keep checking

Other Drugs & Tinospora Cordifolia

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

0Major
611Moderate
0Minor
2,218No known interaction
611 Moderate 2,218 No interaction
Moderate

611 interactions

Showing 60 of 611 moderate interactions — see all 611 on the Tinospora Cordifolia page.

No interaction 2,218 drugs checked — show the list

We also checked Tinospora Cordifolia against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,218 medications checked with no known interaction — see the full Tinospora Cordifolia list.

See the full Tinospora Cordifolia interactions page
See every supplement checked against Aspirin, Codeine Phosphate, Phenobarbital, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Tinospora Cordifolia monograph › Uses, safety, and every drug interaction in one place Aspirin, Codeine Phosphate, Phenobarbital supplement interactions › Every supplement checked against Aspirin, Codeine Phosphate, Phenobarbital, 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 Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Tinospora Cordifolia and Aspirin, Codeine Phosphate, Phenobarbital Together: Common Questions

Can you take Tinospora Cordifolia with Aspirin, Codeine Phosphate, Phenobarbital?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
How serious is the Tinospora Cordifolia and Aspirin, Codeine Phosphate, Phenobarbital interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

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

Still Have a Question About Aspirin, Codeine Phosphate, Phenobarbital and Tinospora Cordifolia?

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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.