In the lower right third of the envelope, write the name of the person you are sending the letter to. Write the company name on the line below that (if there is a company name). Write the street address on the line below the company name. Write the town, state, and zip code on the line below that.
This means that keeping the dog on the antibiotics long enough is critical. If a dogs starts to look better after a few days, do NOT take it off the drugs! An antibiotic regime should last at least 7 days, and 12 days is better in most cases. The general rule of thumb is give the dog antibiotics for at least three days longer than it looks like there is a problem.
A specialist in small animal internal medicine may be the best bet to have a proper diagnosis as they tend to see more problematic diagnostic cases. Can a dog have a delayed allergic reaction of five days to Antirobe? Although not impossible, it would be uncommon for a dog to have a delayed allergic reaction this long after completing the antibiotic. If the dog has allergies or more prone to severe allergies, then this could be the case.