Guinea Pig Vitamin C: Why They Need Daily C
Vet-reviewed via PetHealth+ · Last reviewed June 2026
Guinea pigs cannot make their own vitamin C and need 10–30 mg daily from fresh vegetables or a guinea-pig-specific supplement. Deficiency causes scurvy.
Best sources
Bell peppers, kale, and parsley provide vitamin C; avoid relying on oranges alone.
Supplements
Use products formulated for guinea pigs, not human tablets.
Signs of deficiency
Lethargy, swollen joints, poor coat, and bleeding gums.
Related: How to care for a guinea pig
Frequently asked questions
Can guinea pigs eat rabbit food?
No — rabbit pellets lack vitamin C and may contain harmful additives.
How do I give vitamin C?
Fresh veg daily plus guinea-pig pellets with stabilised vitamin C.
Do vitamin C drops in water work?
They degrade quickly — fresh veg and proper pellets are more reliable.
What vegetables are high in vitamin C?
Red bell peppers, kale, parsley, and broccoli (small amounts).