Rimby is contipated

Question
My guinea pig, Rimby, is constipated; but, he still eats like crazy and is drinking lots of water.  He gets vitamins in his drinking water once a week.  His stool now has white pastey stuff coming out as well with his stool.  He does not cheerp when he is trying to go, but his expression says another thing.  What food should I give him to help loosen up his stool so he can pass it better?

Answer
Kelly,

You can feed a little romaine lettuce dipped in mineral oil, it can help to the relieve the condition. It should help relieve the constipation, and to prevent it from returning make sure he gets some extra fresh greens.

Take care now and I hope Rimby starts feeling better soon.
                       Jules