Drug & supplement interaction

Conjugated Linoleic Acid (cla) + Treprostinil

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

Treprostinil falls into 2 drug categories that Conjugated Linoleic Acid (cla) can interact with; the most serious is rated moderate. Theoretically, taking CLA with antihypertensive drugs might increase the risk of hypotension.

Read the full interaction report
SeverityModerate
LikelihoodPossible
Interactions2
EvidenceA
What do Severity, Likelihood & Evidence mean?
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Interaction report

Conjugated Linoleic Acid (cla) and Treprostinil

These two interact in 2 distinct ways. Each one is explained separately below.

Why Are There 2 Interactions?

Conjugated Linoleic Acid (cla) interacts with whole categories of medication. Treprostinil falls into 2 of those categories, so it can interact with Conjugated Linoleic Acid (cla) in 2 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Moderate).

Moderate

ANTIHYPERTENSIVE DRUGS

1 of 2

Why this applies to Treprostinil

Treprostinil falls under ANTIHYPERTENSIVE DRUGS — the group Conjugated Linoleic Acid (cla) interacts with.

Theoretically, taking CLA with antihypertensive drugs might increase the risk of hypotension.
Animal research suggests that a particular form of CLA reduces systolic blood pressure. Also, some clinical research shows that CLA enhances the blood pressure-lowering effects of ramipril, an antihypertensive drug.
Severity Moderate Likelihood Possible Evidence A

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 gist for Treprostinil (Orenitram). This is a medicine used to treat pulmonary arterial hypertension, and one of the ways it works is by relaxing and widening blood vessels. That lowering of pressure is part of how it helps your lungs, but it also means low blood pressure can be a real side effect on its own.

CLA may have a mild blood pressure-lowering effect of its own, so stacking it on top of treprostinil could, in theory, push your pressure down a little further. Watch for things like dizziness, lightheadedness, headache, or feeling faint when you stand up. The evidence here is mostly theoretical and from other blood pressure drugs, so don't panic. Just loop in your pharmacist or doctor before adding CLA so they can keep an eye on you.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Nagao, K., Inoue, N., Wang, Y. M., Hirata, J., Shimada, Y., Nagao, T., Matsui, T., and Yanagita, T. The 10trans,12cis isomer of conjugated linoleic acid suppresses the development of hypertension in Otsuka Long-Evans Tokushima fatty rats. Biochem.Biophys PubMed
  2. Zhao, W. S., Zhai, J. J., Wang, Y. H., Xie, P. S., Yin, X. J., Li, L. X., and Cheng, K. L. Conjugated linoleic acid supplementation enhances antihypertensive effect of ramipril in Chinese patients with obesity-related hypertension. Am.J Hypertens. 2009;2 PubMed
Moderate

ANTICOAGULANT/ANTIPLATELET DRUGS

2 of 2

Treprostinil also falls under ANTICOAGULANT/ANTIPLATELET DRUGS.

Theoretically, CLA may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Some clinical evidence suggests that intake of CLA reduces platelet aggregation by approximately 10%. The clinical significance of this effect is unclear.
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 connection worth knowing. Treprostinil (Orenitram) is a prostacyclin-type medicine that already works to relax blood vessels and, as part of how it acts, can make your platelets a little less sticky. CLA has been shown in some research to lower platelet clumping by roughly 10% on its own. Stack those two together and, in theory, you could see a bit more of a blood-thinning effect, which might show up as easier bruising, nosebleeds, or bleeding gums.

I want to be honest about how soft this evidence is. It's based mostly on pharmacology and small studies, not strong real-world proof, so for many people it may never cause a problem. Still, before adding a CLA supplement, run it by your pharmacist or doctor so they can keep an eye on you.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Sofi, F., Buccioni, A., Cesari, F., Gori, A. M., Minieri, S., Mannini, L., Casini, A., Gensini, G. F., Abbate, R., and Antongiovanni, M. Effects of a dairy product (pecorino cheese) naturally rich in cis-9, trans-11 conjugated linoleic acid on lipid, inf

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

Conjugated Linoleic Acid (cla) Also Interacts With Other Medications

Conjugated Linoleic Acid (cla) has 288 moderate known drug interactions in our database — the Treprostinil one above is among them. If you take anything else, check it against the full list below.

Moderate 288 No known interaction 2,542 (incl. Treprostinil)
Taking anything else?

Check Another of Your Medications Against Conjugated Linoleic Acid (cla)

Covers the 2,830 medications we’ve checked against Conjugated Linoleic Acid (cla). Pick one to open its full report.

Everything else you take

See Every Supplement That Interacts With Treprostinil

This page covers Conjugated Linoleic Acid (cla) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Treprostinil page lists 291 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Danshen (major) and Piracetam (major).

By severity: 6 major · 258 moderate · 27 minor.

Open the Treprostinil interaction page

How much people look this up

Where Conjugated Linoleic Acid (cla) and Treprostinil 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 Conjugated Linoleic Acid (cla)
Steady interest

#1,382 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Treprostinil
Steady interest

#2,366 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 Conjugated Linoleic Acid (cla)

What is Conjugated Linoleic Acid (cla)?

Conjugated Linoleic Acid (cla)
  • Weight loss
  • Improving body composition
  • Sports and muscle support
  • Reducing inflammation
  • General wellness

CLA is a fatty acid found naturally in meat and dairy, and supplements are usually made from safflower oil. While it is popular for fat loss and body composition, research results are mixed and any real-world effect appears small at best. It is likely safe for short-term use in most healthy adults, but talk to your pharmacist or doctor before starting it.

Read the full Conjugated Linoleic Acid (cla) monograph & all interactions
Medication

About Treprostinil

What Is Treprostinil Used For?

Treprostinil treats pulmonary arterial hypertension (PAH; WHO Group 1) — high blood pressure in the arteries of the lungs. Depending on the product and route, it is used to improve exercise ability, delay disease progression, or reduce symptoms tied to physical activity. Remodulin and treprostinil injection products are also indicated for patients who need to transition away from another PAH medicine called epoprostenol.

Tyvaso, Tyvaso DPI, and Yutrepia (inhaled forms) are additionally approved to treat pulmonary hypertension associated with interstitial lung disease (PH-ILD; WHO Group 3) — lung-pressure problems caused by scarring or inflammation in the lung tissue itself. Orenitram (extended-release oral tablet) is specifically indicated to delay disease progression and improve exercise capacity in PAH.

See full Treprostinil drug information
Keep checking

Other Drugs & Conjugated Linoleic Acid (cla)

Browse every other medication we’ve checked against Conjugated Linoleic Acid (cla) — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
288Moderate
0Minor
2,541No known interaction
288 Moderate 2,541 No interaction
Moderate

288 interactions

Showing 60 of 288 moderate interactions — see all 288 on the Conjugated Linoleic Acid (cla) page.

No interaction 2,541 drugs checked — show the list

We also checked Conjugated Linoleic Acid (cla) against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,541 medications checked with no known interaction — see the full Conjugated Linoleic Acid (cla) list.

See the full Conjugated Linoleic Acid (cla) interactions page
See every supplement checked against Treprostinil, 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
Conjugated Linoleic Acid (cla) monograph › Uses, safety, and every drug interaction in one place Treprostinil supplement interactions › Every supplement checked against Treprostinil, ranked by severity Treprostinil 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 Conjugated Linoleic Acid (cla) and Treprostinil Together: Common Questions

Can you take Conjugated Linoleic Acid (cla) with Treprostinil?
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.
Why are there 2 interactions listed for Conjugated Linoleic Acid (cla) and Treprostinil?
Treprostinil belongs to more than one drug category, and Conjugated Linoleic Acid (cla) interacts with each of those categories a little differently. We list every one so nothing is missed — your overall risk is driven by the most serious of them.
How serious is the Conjugated Linoleic Acid (cla) and Treprostinil 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.