Found it, Sorry for the length of the post. This can be feed to guinea pigs even though it is rabbit food as it does have the added vitamin c in it.
RABBITS CHOICE PELLETS
ANALYTICAL CONSTITUENTS
Crude Oil 4.00 %,Crude Protein 17.00 %,Crude Fibre 16.00 %,Crude Ash 8.00 %,Moist 13.50 %, Vitamin A 15000 IU/Kg,Vitamin D3 2000 IU/Kg,Vitamin E 60 mg/Kg,Copper 20 mg/Kg,Sodium 0.25%
ADDITIVES (per kg)
Vitamins
E672 Vitamin A 15000 iu, E671 Vitamin D 2000 iu, 3a700 Vitamin E 50 iu, Vitamin C 200 mg/kg
Trace Elements
Ferrous sulphate, monohydrate(E1 Iron) 100 mg, Calcium Iodate, anhydrous (E2 Iodine) 3 mg, Cupric sulphate pentahydrate(E4 Copper) 40 mg, Manganous sulphate monohydrate (E5 Manganese) 156.00 mg,zinc sulphate monohydrate(E6 Zinc) 139 mg, Sodium selenite(E8 Selenium) 0.44 mg
Antioxidant
E321 Butylated hydroxytoluene 20 g
A complementary compound feedingstuff for does, bucks and growing rabbits. To be fed in conjunction with forage and water to advised kg/hd/d, Contains copper - do not feed to sheep
COMPOSITION (DESCENDING ORDER OF INCLUSION)
Wheatfeed, Sunflower Seed Ext, Oatfeed, High Temperature Dried Lucerne, Maize Germ Expeller, Barley, Wheat Flour, Wheat, Molasses, Calcium Carbonate, Salt, Vitamin C, Vitamins & Trace Elements
INSTRUCTIONS FOR USE
Contains 0.7kg/t Ascorbyl Monophosphate calcium Sodium Salt to provide 200 mg/kg vitamin C activity