Hello, new member here. The guinea pigs are actually my daughter’s but I mainly take care of them, spoil them, etc. We have a 6 year old and two 8 month olds, all female. They’ve all got issues right now but I believe the younger two will be fine. They both have an upper respiratory infection but are being treated and it did not get into their lungs. The 6 year old is who I’m worried about. She has diarrhea and been losing weight. I took all of them to the vet two days ago. The younger ones got an antibiotic. The 6yo is on what’s supposed to be an anti diarrhea antibiotic, plus an ointment for her feet as they have some sores on them. The vet says that the sores are due to her losing muscle and padding and she suggested I put extra padding in the cage. They’re on fleece bedding. She recommended Bene bac since she’s on antibiotics and she said with her age she’s probably got arthritis and can’t get her natural probiotic, which is causing her to not digest her food properly. Problem is no one has Bene bac gel locally so I had to order it online and it won’t be delivered until Saturday. Has anyone here ever given their guinea pig another probiotic to hold them over until they could get the right one? I called and left a message for the vet and am waiting to hear back from them to see if they can recommend something. I was just wondering if anyone else has dealt with this. I’m worried sick about her. I don’t want to think about losing her. We lost her cage mate back in April. She was 7 years old. We got the two younger ones afterwards so the 6yo wouldn’t be lonely. So losing the 7 yo hurt and now I’m scared we’re going to lose the 6yo too. This is the hardest part about having a pet.