Hosted by Cleo 🐾Guinea pigs are one of the few animals, alongside humans, that cannot synthesize their own vitamin C and must get it entirely from their diet. A deficiency can lead to scurvy, causing symptoms like lethargy, joint pain, poor coat condition, and a weakened immune system over time.
Fresh vegetables and a small amount of vitamin C-fortified guinea pig pellet are the main sources — but pellets lose vitamin C potency over time, so buying smaller bags more frequently and storing them properly matters more than people expect. Bell peppers are one of the richest natural sources, often recommended as a daily staple alongside leafy greens.
Some owners also offer vitamin C supplements or drops, especially during illness or recovery, though this should be balanced carefully since too much can also cause issues — a vet can advise on dosing if you're concerned your guinea pig isn't getting enough through diet alone.