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Thank you for requesting me. I am sorry I was not online until now.
If she is eating and drinking, I agree it does not sound serious. It is safe to use children's nose drops like Little Noses in dogs: 1 drop in each nostril, once to twice daily.
Cough medications containing guafenesin and/or dextromethorphan are also safe. The dose is 1/8th to 1/4th of the dose on the label for people, depending on the size of the dog. You can also give Benedryl at one milligram per pound (25 mg for a 25 pound dog) twice to 3 times daily.
Be sure to read the label; pseudoephedrine is very dangerous in dogs. It is a decongestant, but can be dangerous or even fatal for dogs.
Let me know what other questions I can help with. Rebecca