Guinea pigs cannot produce vitamin C — they must get it from food every single day.
Guinea pigs need daily vitamin C — they cannot produce it themselves. Bell peppers and leafy greens are the best sources. Hay is the majority of their diet. Avoid high-sugar or starchy foods as they cause serious digestive issues.
Best vitamin C source
✅ SafeDaily green
✅ SafeVitamin C boost
✅ SafeHigh vitamin C
✅ SafeOccasional treat
✅ SafeHydrating treat
✅ SafeHigh sugar — rare only
⚠️ CautionOccasional only
⚠️ CautionHigh starch — limit
⚠️ CautionToxic
❌ DangerousToxic
❌ DangerousToxic
❌ DangerousToxic
❌ DangerousToxic
❌ DangerousHighly toxic
❌ DangerousCall your vet or ASPCA Poison Control immediately at (888) 426-4435. Do not wait for symptoms.