
I've no experience of the new drug but, especially as your dog is so young, I would look at more natural remedies rather than just pain killers that can have so many side effects
Golden Paste (turmeric)
Yumove or Riaflex - look at the ingredients
CBD oil
Ester C - vitamin c in a bioavailable format
There's studies on these but do be careful not to mix without researching any interactions especially with any strong pharmaceutical meds.