I’ve written a few articles on holistic medicine, and lately, I’ve seen a lot of social posts with HSA parents asking about Yunnan Baiyao (aka “YB” as you’ll see it abbreviated) — and the notorious red pill that accompanies it, so I thought I’d dive a little deeper.

⏰🥱👉 TL;DR (for exhausted dog parents)

Yunnan Baiyao is a traditional Chinese herbal medicine often used to help control bleeding from tumors like those caused by hemangiosarcoma. It’s not a cure, and the science is still catching up — but many vets include it as a supportive supplement for dogs at risk of internal bleeding. Use only under veterinary guidance, buy from reputable sources, and remember: it can be helpful, but it’s not magic. It can also cause stomach irritation — although, not for Cat, thankfully — however, we do keep her on a regular probiotic (Proviable — can get it on Amazon).

What is Yunnan Baiyao? (pronounced you-naan bye-yow)

If you’ve ever typed “best supplement for hemangiosarcoma” into your search bar at 2 a.m., you’re not alone. After Cat was diagnosed, I remember the endless doom scrolling — desperate for something, anything, that might buy time or comfort. That’s the first time I read about this centuries-old Chinese medicine that kept coming up in vet forums and Facebook groups with words like “bleeding,” “miracle,” and “little red pill.”

Turns out, Yunnan Baiyao is a proprietary blend of Chinese herbs — but the exact “recipe” is a trade secret. The main ingredient is Panax notoginseng, sometimes called “San Qi” which has long been used in China to stop bleeding and promote wound healing, both internally and externally. You can buy it in capsules, powder, or even sprays — and most include a single mysterious tiny red pill, which I’ll cover in a separate post.

How It’s Intended to Work

It is believed that Yunnan Baiyao helps activate platelets, shorten bleeding time, and may even have mild anti-inflammatory or anti-tumor properties. The science is mixed, though, with a few clinical studies showing contradictory findings. …It’s a reminder that herbal medicine and modern research don’t always move at the same speed. Especially when it comes to veterinary medicine

Here’s what we know so far — it:

• Does appear to help some dogs manage minor bleeding episodes.

• Isn’t a replacement for surgery, chemotherapy, or other medical care.

• Hasn’t been proven to extend survival in canine HSA.

• Is generally considered safe when used as directed.

It is not FDA-approved in the U.S., and quality can vary widely between manufacturers. Beware, though: I have heard that there are “imposter” vendors out there, selling fake Yunnan Baiyao dirt cheap, so if it seems too good to be true, then it probably is — and may not only be a waste of money but could also do harm to your pup.

One of Cat’s vets sells it — but at $50/box, which is a huge markup. Online, it is half that or less. I am in no way vouching for this vendor — am only sharing our story — but I buy 12-packs at a good price here. …It was kind of a “nudge-nudge-wink-wink” recommendation by someone at the clinic because she knew that buying it from them wasn’t going to be sustainable in the long term (or short term, TBH).

Where It Fits in a Treatment Plan

Some veterinarians use it as a supportive tool — something that may help stabilize your dog or reduce the risk of bleeding. If not used regularly, many holistic vets recommend keeping a box on hand for emergencies — but always under their supervision.

Ultimately, it’s better to view it as a bridge between science and hope — an age-old remedy that may help in moments when you’re running low on both. It’s not a cure, but it can feel like a little bit of control when dealing with a terminal disease, and sometimes that’s its own kind of medicine.

Does Cat the Dog Take Yunnan Baiyao Regularly?

Yes. Her holistic veterinarian (more on that here) prescribed Yunnan Baiyao soon after diagnosis, and it’s remained a regular part of her regimen (info on her specific dosing here). For more on our experience with the red pill, read this article.

One important warning about administering Yunnan Baiyou: To me, it doesn’t smell good, per se, but to dogs, it smells wretched — and once they’ve gotten a taste, they will never get near another again — unless it is covertly packaged in an stellar snack — preferably something irresistible (like steak!) or with a strong smell that masks its odor (like goat cheese). And you have to put the snacks on rotation so your pup never gets wise to the tactic. For more on my process-of-elimination, 8+ month tests, tried-and-true pill-administering tips, visit: Pill-Popping Like a Pro.

As another precautionary measure (for many reasons), we keep Cattie on a probiotic the doc recommended (Proviable is our go-to) because, as with many of these supplements, upset stomach can sometimes be an issue. Fortunately, Cat’s tummy’s been pretty sound, considering…

The Takeaway

If your vet suggests Yunnan Baiyao, it’s worth considering — especially if bleeding is a concern. Just:

• Follow dosing exactly as your vet instructs.

• Avoid off-brands or random online sellers.

• Don’t assume “more is better.”

• And most importantly, don’t skip other medical care, hoping this can replace it.

It’s a tool. Not the toolbox. And sometimes, having one more tool can make the hard days feel just a little bit steadier.