Drug & supplement interaction

Baikal Skullcap + Treprostinil (IV)

Treprostinil (IV) brand name: Remodulin.

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

Baikal Skullcap has a moderate interaction with Treprostinil (IV). Theoretically, Baikal skullcap might increase the risk of bleeding when used concomitantly with anticoagulant and antiplatelet drugs.

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

Baikal Skullcap and Treprostinil (IV)

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

Moderate

ANTICOAGULANT/ANTIPLATELET DRUGS

Why this applies to Treprostinil (IV)

Treprostinil (IV) falls under ANTICOAGULANT/ANTIPLATELET DRUGS — the group Baikal Skullcap interacts with.

Theoretically, Baikal skullcap might increase the risk of bleeding when used concomitantly with anticoagulant and antiplatelet drugs.
Preliminary clinical research suggests that taking capsules containing a combination of astragalus, goldthread, and Baikal skullcap daily for 4 weeks inhibits platelet aggregation; the effect seems to be similar to that of aspirin 50 mg daily. It is unclear if this effect is due to Baikal skullcap, other ingredients, or the combination.
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

Here's the thing about IV treprostinil (Remodulin): it's a medicine used for pulmonary arterial hypertension, and on its own it can already make you bleed or bruise more easily because it relaxes blood vessels and affects how platelets stick together. Baikal skullcap may, at least in lab and early studies, also nudge platelets toward sticking together less, a mild aspirin-like effect. Stack the two and the worry is simply more bleeding risk, things like easy bruising, nosebleeds, or bleeding that's slow to stop.

I want to be honest that this is theoretical and based on weak evidence, mostly lab work and one small study using a herbal blend, not skullcap alone. Still, since you're on an IV therapy, please run it by your pharmacist or doctor before adding the herb.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Huang, W. M., Yan, J., and Xu, J. [Clinical and experimental study on inhibitory effect of sanhuang mixture on platelet aggregation]. Zhongguo Zhong.Xi.Yi.Jie.He.Za Zhi. 1995;15(8):465-467.

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

Baikal Skullcap Also Interacts With Other Medications

Baikal Skullcap has 593 moderate, 352 minor known drug interactions in our database — the Treprostinil (IV) one above is one of them. If you take anything else, check it against the full list below.

Moderate 593 Minor 352 No known interaction 1,885 (incl. Treprostinil (IV))
Taking anything else?

Check Another of Your Medications Against Baikal Skullcap

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

Everything else you take

See Every Supplement That Interacts With Treprostinil (IV)

This page covers Baikal Skullcap only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Treprostinil (IV) page lists 212 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: American Mistletoe (major), Danshen (major), Piracetam (major), Aconite (moderate) and African Wild Potato (moderate).

By severity: 3 major · 191 moderate · 18 minor.

From our pharmacist’s overview on the Treprostinil (IV) page

“Bleeding risk is the thread running through nearly every supplement flagged for treprostinil (Remodulin), the IV therapy for pulmonary arterial hypertension. The drug itself discourages platelets from clumping, so the overwhelming majority of these ingredients could push that tendency further, and I would not add anything from this pag…”

Reviewed by 2 · Jul 18, 2026

Open the Treprostinil (IV) interaction page

One more smart check

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

We hold 737 real supplement products containing Baikal Skullcap, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Baikal Skullcap. Your product may carry other ingredients that interact with Treprostinil (IV) too, on top of Baikal Skullcap — 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 Baikal Skullcap and Treprostinil (IV) 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 Baikal Skullcap
Top 25%

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

29 days ago today
Medication Treprostinil (IV)
Top 25%

#540 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 Baikal Skullcap

What is Baikal Skullcap?

Baikal Skullcap
  • Inflammation
  • Allergies
  • Anxiety and sleep
  • Immune support
  • Respiratory infections

Baikal skullcap is a traditional Chinese herb (Huang Qin) used for inflammation, allergies, and infections, with active compounds like baicalin and baicalein studied mostly in the lab. Human evidence remains limited, so it should not replace proven treatments. Talk to your pharmacist or doctor before using it, and avoid it in pregnancy and breastfeeding.

Read the full Baikal Skullcap monograph & all interactions
Medication

About Treprostinil Injection

What Is Treprostinil Injection Used For?

Brand name: Remodulin

Treprostinil injection is used to treat pulmonary arterial hypertension (PAH, WHO Group 1) — high blood pressure in the arteries that supply the lungs. It works to reduce the symptoms that make exercise difficult. Clinical studies included patients with moderate-to-severe PAH symptoms (NYHA Class II–IV) due to idiopathic or heritable PAH, PAH related to congenital heart defects, and PAH related to connective tissue diseases.

It is also used for PAH patients who need to transition off epoprostenol — a related medication — to slow the worsening of their condition during that switch. The risks and benefits of the transition should be carefully discussed with a specialist before starting.

See full Treprostinil Injection drug information
Keep checking

Other Drugs & Baikal Skullcap

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

0Major
593Moderate
352Minor
1,884No known interaction
593 Moderate 352 Minor 1,884 No interaction
Moderate

593 interactions

Showing 60 of 593 moderate interactions — see all 593 on the Baikal Skullcap page.

Minor

352 interactions

Showing 60 of 352 minor interactions — see all 352 on the Baikal Skullcap page.

No interaction 1,884 drugs checked — show the list

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

Showing the 60 most looked-up of 1,884 medications checked with no known interaction — see the full Baikal Skullcap list.

See the full Baikal Skullcap interactions page
See every supplement checked against Treprostinil (IV), 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
Baikal Skullcap monograph › Uses, safety, and every drug interaction in one place Treprostinil (IV) supplement interactions › Every supplement checked against Treprostinil (IV), ranked by severity Treprostinil Injection drug information › The full plain-English guide to this medication 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 Baikal Skullcap and Treprostinil (IV) Together: Common Questions

Can you take Baikal Skullcap with Treprostinil (IV)?
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 Baikal Skullcap and Treprostinil (IV) 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

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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.