Quick answer: I'm-Yunity is a standardised turkey tail polysaccharopeptide (PSP) extract, dosed by weight up to 100 mg per kilogram a day, and it is the exact product used in the University of Pennsylvania hemangiosarcoma studies, which is why oncologists know its name. OcuLabs Turkey Tail+ is a chicken-flavoured daily wellness complex for healthy senior dogs: turkey tail 400 mg, shiitake 200 mg, lion's mane 200 mg, beta-glucan 150 mg, curcumin 100 mg, green tea polyphenols 50 mg, vitamin C 50 mg and 1 billion CFU of Bacillus subtilis per scoop. A dog with cancer belongs on the oncologist's plan, which may include I'm-Yunity. A healthy older dog whose owner wants immune, gut and brain support that gets eaten belongs on Turkey Tail+. They are not substitutes for each other in either direction.
What the research actually showed
In 2012, Penn Vet published a trial of I'm-Yunity in 15 dogs with splenic hemangiosarcoma, an aggressive cancer, after removal of the spleen and with no chemotherapy. Dogs received 25, 50 or 100 mg per kilogram per day. The highest-dose group's median survival was 199 days, against historical survival of roughly 19 to 86 days without treatment, and no side effects were seen. There was no placebo group and the numbers were small, which the authors said themselves. A larger Penn study published in 2022 compared I'm-Yunity alone with I'm-Yunity plus doxorubicin chemotherapy and did not reproduce the earlier survival advantage. Where that leaves things: turkey tail PSP is safe, biologically plausible, promising in one small study, unconfirmed in a bigger one, and widely used by oncologists as supportive care because the downside is small. That is an honest summary, and it is the reason turkey tail is taken seriously as a mushroom.
Side by side
- What it is: I'm-Yunity: single standardised PSP extract from Coriolus versicolor. OcuLabs: three-mushroom fruiting-body complex plus curcumin, antioxidants and a probiotic.
- Purpose: I'm-Yunity: supportive care in cancer under veterinary guidance. OcuLabs: daily wellness for healthy dogs 7 and up.
- Dose: I'm-Yunity: by weight, up to 100 mg per kg per day in the research, many capsules a day for a large dog. OcuLabs: one 1.6 g scoop on food daily.
- Flavour: I'm-Yunity: capsules, none. OcuLabs: chicken.
- Extras: I'm-Yunity: none. OcuLabs: lion's mane, shiitake, curcumin, green tea polyphenols, vitamin C, Bacillus subtilis.
- Cost: I'm-Yunity is costly at study doses for a big dog. OcuLabs 64 dollars per 50 g jar (about 30 scoops), 90-day money-back guarantee.
- Where sold: I'm-Yunity direct and through some vets. OcuLabs ocupetlabs.com only.
Where the line sits
If your dog has been diagnosed with hemangiosarcoma or another cancer and turkey tail is on the table, the question for the oncologist is which extract and what dose. The study used I'm-Yunity at far higher PSP levels than any wellness scoop delivers, and a complex like Turkey Tail+ is not designed to replace that. If your dog is healthy and aging, a high-dose single PSP extract is more product, more cost and more capsules than the job needs, and it leaves out the brain support, antioxidants and probiotic a senior routine benefits from. OcuLabs Turkey Tail+ is built for that second dog: fruiting bodies only, third-party tested, heavy-metal screened, and stirred into dinner so it actually happens every day.
For the mushroom science, read turkey tail mushroom for dogs. For the single-extract alternative with published beta-glucan numbers, see Turkey Tail+ vs Real Mushrooms.
Frequently asked questions
What is I'm-Yunity?
A standardised turkey tail PSP extract in capsules, dosed by weight, used in the Penn Vet hemangiosarcoma studies.
What did the Penn study show?
Longer median survival in a small 2012 study without a control group; a larger 2022 study did not confirm it. Promising, unproven, safe.
Is Turkey Tail+ a cancer supplement?
No. It is daily wellness support for healthy senior dogs.
Can Turkey Tail+ replace I'm-Yunity in a cancer plan?
No. Use the product and dose the oncologist specifies.
Which should a healthy senior get?
Turkey Tail+, for the broader formula, the flavour and the guarantee.
I'm-Yunity is a trademark of its owner. Study details come from published University of Pennsylvania research. This article is general information, not veterinary advice; a dog with cancer needs a veterinary oncologist. OcuLabs products are nutritional supplements and are not intended to diagnose, treat, cure or prevent any disease.