Guinea pigs, like humans, cannot synthesize their own Vitamin C due to a genetic mutation that disables the L-gulonolactone oxidase enzyme. Without dietary Vitamin C, they develop scurvy within 2–3 weeks. Fresh vegetables and fruits are the best natural sources. A daily supply is essential for collagen formation, immune function, and overall health.

A healthy adult guinea pig typically needs 10–30 mg of Vitamin C per day. Pregnant or nursing sows require 30–50 mg, while sick or recovering guinea pigs may need 50–100 mg under veterinary guidance. Young growing cavies need around 20–30 mg daily. Use our tracker above to estimate intake based on your piggy's status.

Top Vitamin C sources for cavies include: Red bell pepper (~127 mg/100g), parsley (~133 mg/100g), kale (~120 mg/100g), broccoli (~89 mg/100g), kiwi (~93 mg/100g), and strawberries (~59 mg/100g). Bell peppers are especially popular because they're low in sugar and high in Vitamin C. Rotate multiple sources for a balanced diet.

Vitamin C is water-soluble, so excess amounts are usually excreted in urine. However, extremely high doses (consistently above 200+ mg/day) may cause digestive upset, diarrhea, or in rare cases, contribute to oxalate kidney stones. It's best to stay within the recommended range. Our tracker will warn you if estimated intake exceeds safe levels.

Early signs of scurvy in guinea pigs include lethargy, rough coat, loss of appetite, swollen joints, and reluctance to move. You may also notice bleeding gums, bruising, or delayed wound healing. If you suspect deficiency, consult a veterinarian immediately and review your cavy's diet using this tracker.

This tool provides reasonable estimates based on USDA and international food composition databases. Actual Vitamin C content varies with freshness, storage time, growing conditions, and preparation method. Vitamin C degrades over time—fresh, raw foods retain the most. Use this tracker as a helpful guide, not a medical device.

If your guinea pig consistently receives a well-planned variety of Vitamin C-rich fresh foods meeting the daily target, supplements may not be necessary. However, many owners use Vitamin C tablets or liquid drops as insurance—especially if the piggy is a picky eater. Always consult your vet before adding supplements.

Yellow bell peppers contain the most Vitamin C at approximately 183 mg/100g, followed by red (~127 mg/100g) and green (~80 mg/100g). All bell pepper colors are safe and excellent for guinea pigs, with the added benefit of being relatively low in sugar compared to fruits.