As you know, when medicines are tested for humans, they usually use guinea pigs to test them on... Well... even though I am against animal testing, the animals should benefit from it too.
Calpol is used as a painkiller for guinea pigs like it is for humans
Nurofen acts as an anti-inflammatory - same as humans
Complan is milkshakes, soups, or cereals. Humans use these for people who are not eating a lot as it's a good source of protein, energy and is rich in essential vitamins and minerals, (Taken from Complan website)
Do not use these medicines if you don't know what your doing. The best thing to do is to contact Vedra on 07721026401 who will indicate the dosage and which medicines to give guinea pigs. A good book to get is Piggy Potions by Peter Gurney as it names all the human medicines you can use for guinea pigs with doseage for certain illnesses however I would still recommend you contact Vedra first.