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No verified public author identity is recorded for this page. Dog Tumor is the publisher; no veterinary authorship is implied.
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Directory Entry

STUBBS S-Onco: Product Profile

Herbal Formula · Immune-support Supplement · Mushroom Supplement · Supplement · S-Onco · Dogs & Cats · Long-term Management
Brand: STUBBSCommon name: STUBBS S-OncoEditorial source check: Dog Tumor Editorial Team (editorial review; not licensed veterinary review)Last reviewed: Aug 12, 2026Official link: Visit
Directory entry:This page explains what the product, drug, herb, chemotherapy approach, or supportive-care option is. For step-by-step use or monitoring, read related Guides and consult a veterinarian.
Entry kind
Branded product
Product family
S-Onco

Quick summary

STUBBS S-Onco is a named branded product for Dogs and cats of all breeds and ages according to the manufacturer; manufacturer positioning must be kept separate from independent clinical evidence.

What it is

Oral powder in a 90 g jar. Intended species: Dogs and cats of all breeds and ages according to the manufacturer.

Active ingredients / formula

Cordyceps sinensis; Ganoderma lucidum; Curcuma longa; Moringa oleifera; Centella asiatica; Camellia sinensis; Withania somnifera; magnesium; and zinc. The public manufacturer page reviewed names ingredients but does not provide all quantitative amounts.

Mechanism / rationale

STUBBS markets S-Onco for immune-system support in oncological situations. The official page attributes apoptosis, antiproliferative, antioxidant, cytotoxic, angiogenesis, immune, and cachexia-related mechanisms to individual ingredients. Those statements are manufacturer rationale and do not establish a clinical outcome for the finished powder.

How it is discussed in tumor care

May be discussed only as adjunctive/supportive care within a veterinarian-led plan; it must not replace diagnosis, staging, standard treatment, symptom control, or emergency care.

Potential role

Define a modest supportive goal, objective review date, adverse-effect plan, and stopping rule with the veterinarian.

Typical use context

Bring the current label, lot, complete ingredient panel, seller and country version, and every medicine and supplement to the treating veterinarian.

Evidence snapshot

No controlled canine or feline oncology trial of the complete S-Onco formulation was identified in the official sources reviewed. Preclinical findings about an ingredient, mushroom, or plant cannot establish that the combination shrinks tumors, delays progression, improves treatment response, or extends survival. The manufacturer page is a primary source for label identity, not independent efficacy evidence.

Safety notes

The multi-ingredient formula warrants review for mushroom allergy, gastrointestinal effects, sedation or stimulation, thyroid or endocrine disease, liver metabolism, blood pressure, bleeding, anticoagulants, immunosuppressants, surgery, pregnancy, and duplicate magnesium or zinc. Green tea, turmeric, ashwagandha, mushrooms, and minerals can each matter in a complex plan.

Interactions / cautions

No universal compatibility conclusion is made. Review the complete label and individualized treatment plan with the veterinarian.

Regulatory status

Marketed in Portugal as a feed/supplement for dogs and cats. No EU veterinary-medicine marketing authorization for cancer treatment was identified. The product should be described as complementary nutritional support rather than a licensed antineoplastic medicine.

Regions, labels and market differences

Portugal; European Union

Monitoring plan

Record the Portuguese/EU package, lot, full label, start date, and supportive goal. Monitor appetite, vomiting, diarrhea, stool, activity, sleep or behavior change, skin reactions, bruising, and body weight. Maintain treatment-specific examinations, laboratory tests, imaging, and response assessment. Review benefit and tolerance at a defined date rather than continuing automatically.

Questions to ask your veterinarian

  • What exact supportive goal would justify adding STUBBS S-Onco?
  • Does the current physical label match this market version and ingredient list?
  • Could any ingredient duplicate or interact with the existing medical plan?
  • What adverse signs, review date, and stopping rule should we use?
  • Which objective oncology measurements continue independently?

Sources and further reading