Scurvy (vitamin C deficiency) in guinea pigs
PetPort EditorialLast reviewed
Why do guinea pigs need vitamin C every day?
Guinea pigs cannot make their own vitamin C, so they must get it from food every single day. Without it they develop scurvy: a rough coat, reluctance to move, swollen painful joints, bleeding gums and poor healing. It is entirely preventable, and it is one of the commonest illnesses in pet guinea pigs.
General guidance for pet parents, not a diagnosis. Every animal is different — confirm anything that concerns you with your veterinarian.
Quick reference
| Daily requirement | Roughly 10–30 mg/kg, higher when ill, pregnant or growing |
|---|---|
| Cannot be stored | Vitamin C must be supplied every day |
| Richest common source | Bell pepper (capsicum) — higher than orange, weight for weight |
| Never | Put vitamin C in the water bottle — it degrades within hours |
| Pellet caveat | Vitamin C in pellets degrades with light, heat and age |
| Signs appear in | Weeks, not months |
What is happening
Like humans, guinea pigs lack the enzyme to synthesise vitamin C. It is needed for collagen, so deficiency shows up as joint pain, fragile blood vessels, bleeding gums and wounds that will not heal. Signs appear within a few weeks of an inadequate diet.
Signs to watch for
- Reluctance to move, a stiff or hopping gait, or crying when picked up
- Rough, staring coat and weight loss
- Swollen joints, bleeding gums, loose teeth, or wounds that heal slowly
What you can do
- Offer fresh vitamin C-rich vegetables daily — bell pepper is among the richest
- Use guinea-pig pellets fortified with vitamin C, and store them sealed and dark
- Never add vitamin C drops to the water bottle — it degrades and puts the animal off drinking
See a vet if
Your guinea pig is reluctant to move, has swollen joints, bleeding gums or is losing weight. Scurvy responds well to proper supplementation, but a vet should confirm it and rule out dental disease, which looks similar.
In India specifically
Guinea pig pellets can be hard to source consistently outside Indian metros, and rabbit pellets — often substituted — contain no added vitamin C and are not a valid replacement. Heat also degrades vitamin C in stored pellets faster here, so buy small quantities rather than bulk. Fresh capsicum and coriander are widely available and inexpensive, and are the most practical daily source in most Indian households.
Common questions
Which vegetables give guinea pigs the most vitamin C?
Bell pepper (capsicum) is among the richest and is widely available in India. Coriander, parsley and kale are also good. Fruit is high in sugar and should be occasional. Rotate a few options daily rather than relying on any one, and introduce new vegetables gradually.
Can I put vitamin C drops in the water bottle?
It is not recommended. Vitamin C degrades quickly in water, especially in light and heat, so the dose becomes unreliable within hours. It also changes the taste, and a guinea pig that drinks less because of it faces a worse problem than the one you were solving.
My guinea pig eats fortified pellets. Is that enough?
It should be, but vitamin C in pellets degrades with age, light and heat — an old bag stored in an Indian summer may contain far less than the label says. Buy small quantities, check the manufacture date, store sealed and dark, and still give fresh vegetables daily.
How quickly does scurvy improve with treatment?
Guinea pigs often show noticeable improvement within days of adequate supplementation, and this responsiveness is part of how the diagnosis is confirmed. Established joint changes take longer. Do not self-dose high supplements — get the diagnosis confirmed, since dental disease presents similarly.