Vitamin C Deficiency (Scurvy) in Guinea Pigs
Guinea pigs, like humans, cannot synthesize their own vitamin C. Deficiency leads to scurvy â a painful, potentially fatal multisystem disease. Easily preventable with proper diet and supplementation.
Last updated: 2026-05-10
Severity
moderate
When to Act
See Vet Soon
Symptoms & Signs
Painful or stiff joints
Guinea pig walks stiffly, limps, or cries when moving. May be reluctant to move.
Swollen joints
Visible swelling around the knees, hocks, or other joints.
Rough, dull coat
Fur loses its shine and appears rough or stands on end.
Poor wound healing
Small cuts or scrapes take abnormally long to heal.
Bleeding gums
Red, swollen, or bleeding gums; teeth may loosen.
Weight loss
Pain makes eating difficult, leading to gradual weight loss.
Behavioral Changes to Watch For
Pets can't tell us what's wrong. These behavioral changes are often the first clues that something is wrong.
ðū Reluctance to move
Guinea pig stays in one place, cries when forced to walk.
What You May Notice:
Your guinea pig doesn't come to the front of the cage for food and cries when you pick them up.
Causes & Risk Factors
Causes
- âĒInadequate dietary vitamin C intake
- âĒVitamin C degrades rapidly in stored pellets and water â even if supplemented, it may be inactive
- âĒIncreased vitamin C requirement during pregnancy, growth, illness, or stress
Risk Factors
- â Diet lacking fresh vitamin C-rich vegetables (bell peppers, kale, parsley)
- â Old or improperly stored pellets (vitamin C degrades within 90 days of opening)
- â Only providing vitamin C in drinking water (degrades in light, affects taste, reduces water intake)
- â Pregnant, nursing, young, or ill guinea pigs (higher requirements)
How It's Diagnosed
- 1Clinical signs + dietary history
- 2Response to vitamin C supplementation (rapid improvement supports diagnosis)
- 3Radiographs: may show widened growth plates, subperiosteal hemorrhage, or pathological fractures
- 4Blood vitamin C levels (rarely performed)
Treatment Options
Vitamin C Supplementation
Direct, high-dose vitamin C to reverse the deficiency rapidly.
Steps
- 1.Vitamin C 50-100 mg/kg daily by mouth (oral syringe) for 1-2 weeks
- 2.Use a veterinary vitamin C supplement or human liquid vitamin C (no additives)
- 3.Then taper to maintenance: 25-30 mg/kg daily
- 4.Also give vitamin C-rich vegetables: bell pepper (especially red), kale, parsley
- 5.Pain management: meloxicam if the guinea pig is in significant pain
Expected Outcome
Dramatic improvement within 1-2 weeks. Joint pain resolves first.
Precautions
- !Do not rely on vitamin C in water â it degrades rapidly and alters taste
- !Overdose can cause diarrhea â stick to recommended doses
Common Medications Used
| Medication | Usage | Important Notes |
|---|---|---|
| Vitamin C (Ascorbic Acid) | Essential vitamin supplementation for guinea pigs | Liquid form given by syringe is most reliable. Tablets can be crushed and sprinkled on food. |
Prevention
- âDaily vitamin C supplement (25-30 mg/kg): liquid drops or Oxbow Vitamin C tablets
- âFresh vegetables high in vitamin C daily: bell pepper (highest), kale, parsley, broccoli
- âUse fresh, high-quality guinea pig pellets (fortified with stabilized vitamin C)
- âReplace pellets every 90 days after opening
When to See a Veterinarian
- â ïļStiff gait or reluctance to move
- â ïļSwollen joints
- â ïļNot eating or weight loss
- â ïļBleeding gums
Frequently Asked Questions
Can guinea pigs overdose on vitamin C?
Prognosis
Excellent with vitamin C supplementation. Most symptoms reverse within 1-2 weeks. If not treated, scurvy is progressive and fatal.
References
- [1] BSAVA â Manual of Rodents
- [2] Oxbow â Guinea Pig Nutrition
- [3] Guinea Lynx â Vitamin C
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moderate