5 Ingredients I Would Never Give My Dog

Many dog owners come to me feeling confused, frustrated, and guilty. Their dog has allergies, digestive issues, constant itching, diarrhea, or recurring infections — and they’re told “everything looks normal.” But very often, the answer isn’t found in another medication or supplement. It’s already sitting in the food bowl. As a dog nutritionist, I focus on how ingredients affect the gut, immune system, liver, and long-term health. And there are certain ingredients I will always avoid — not because they’re trendy to eliminate, but because I see the damage they cause again and again.

Here are five ingredients I would never give my dog.

1. Sorbitol (Sugar Alcohols in Dog Treats)

Sorbitol is often added to dog treats, dental chews, and supplements to improve texture or sweetness. What it actually does is pull water into the intestines, leading to:

👉🏽Chronic or recurring diarrhea. 👉🏽Gas and bloating 👉🏽Gut irritation 👉🏽Worsening of gut imbalance (dysbiosis)

For dogs already struggling with sensitive digestion, UTIs, or bladder stones, sorbitol can quietly make things worse. Dogs don’t need sweeteners. Their bodies pay the price for them.

2. Carrageenan (Inflammatory Thickener in Wet Dog Food)

Carrageenan is commonly used in canned and wet dog food to create a thick, appealing texture. Despite being labelled as “natural,” carrageenan is known to: 👉🏽Irritate the gut lining 👉🏽Promote inflammation 👉🏽Increase intestinal permeability (leaky gut) 👉🏽Trigger immune reactions 👉🏽In dogs with allergies, IBD, or chronic digestive problems, this ingredient can keep the gut in a constant state of stress.

Sometimes removing one ingredient changes everything.

3. Synthetic Vitamins and Minerals   Many dog foods rely heavily on synthetic vitamin and mineral blends to meet minimum standards. These lab-made isolates: 👉🏽Are often poorly absorbed 👉🏽Can irritate the digestive tract 👉🏽Place extra burden on the liver 👉🏽Accumulate instead of nourishing

A long supplement list doesn’t mean better nutrition. It often means the base ingredients weren’t good enough to begin with. Dogs thrive on nutrients from real, whole foods — not chemical shortcuts.

4. Vegetable Oils (Canola, Sunflower, Soy) Vegetable oils are widely used because they’re cheap and extend shelf life. But these oils are: 👉🏽Highly processed 👉🏽Extremely high in omega-6 fatty acids. 👉🏽Easily oxidised

Excess omega-6 fuels inflammation and is strongly linked to: 👉🏽Itchy skin and allergies. 👉🏽Digestive upset. 👉🏽Hormonal imbalance. 👉🏽Chronic inflammatory disease

These oils simply don’t exist in a dog’s natural diet — and their bodies struggle to cope with them long term.

5. “Natural Flavours” (Hidden and Unregulated) “Natural flavours” sounds harmless, but it’s one of the least transparent ingredients on a pet food label.

These flavours are often: 👉🏽Heavily processed. 👉🏽Made from rendered by-products. 👉🏽Poorly regulated

They add no nutritional value and can contribute to: 👉🏽Food sensitivities. 👉🏽Picky eating. 👉🏽Gut irritation

If an ingredient isn’t clearly named, it shouldn’t be trusted.

Why This Matters More Than Adding Supplements Many owners try to fix chronic dog health problems by adding:

• Probiotics
• Oils
• Powders
• Expensive supplements

But healing often begins by removing what’s causing the damage.