What are the symptoms of Cellulose poisoning in cats?

larger stools, occasional constipation or loose stool

Cellulose

Q: Is Cellulose safe for cats?

Caution: Caution — powdered plant fiber used as a filler or hairball aid. Not a toxin. Cellulose adds bulk. Some cats pass larger stools or skip a meal if a food is very high in fiber. It does not cause organ failure. Source: ASPCA.

Q: Is Guar gum also safe for cats?

Caution: Caution — a thickener. Occasional loose stool, not a poison-control emergency.

Caution

Verdict

Caution — powdered plant fiber used as a filler or hairball aid. Not a toxin.

Also called: powdered cellulose

Source: ASPCA · Verified 2026-08-13

Verdict

Cellulose adds bulk. Some cats pass larger stools or skip a meal if a food is very high in fiber. It does not cause organ failure.

Symptoms to watch for

• larger stools
• occasional constipation or loose stool

What to do

No emergency. Ask your vet before using high-fiber “hairball” foods long term in a small or skinny cat.

Related foods

Guar gum

Caution

Caution — a thickener. Occasional loose stool, not a poison-control emergency.

Additive

Carrageenan

Caution

Caution — a thickener, not a classic poison. Evidence of harm in cats is limited and debated.

Additive

Sugar

Caution

Caution — not a cat nutrient. The real emergencies are chocolate, xylitol, and raisins hiding in sweet foods.

Carbohydrate

Grain-free legumes (peas, lentils)

Caution

Caution — diet-associated heart disease is an open scientific question, not a settled poison.

Carbohydrate