I don't know what you use on Andy for fighting the URI but I use AZYTHROMYICIN when it hits hard and it seems to wipe the sickness right out of them.once a day for 4 weeks.According to weight.
There's a big difference with aZythromicyn and aRythromyicin.
The one with the Z is MUCH stronger.I know I spelled it wrong but the one with the Z is the BIG cure of ALL.It took me mega years to find this out and so much wasted money over those years on other meds.