I have used the muscle relief oil for quite some time now. it works great on sore muscles, etc. However, I discovered (by accident) that my Toy Poodle got respiratory coughs from at least one of the ingredients in the oil mixture. So, I stopped using the oil until my precious poodle died. He was able to live another 2 years when I quit using the oil. He died when he was exactly 18 years old (on his birthdate.). I researched all of the ingredients in the oil and found that one of the ingredients in "muscle relief" affects all domestic animals like cats and dogs. I believe your practitioners who create the formulas for your products should be aware of this and not include any of the oils that are volatile to our pets. There is a list of about 10 or 12 oils that affect cats and dogs. I suggest that your practioners do the same research I did to 'discover' which oils affect our wonderful pets. . . Then leave those particular oils out of any of your formulas. P.S.- Do you know if any of the oils in the 'muscle relief' formula affects someone with COPD? I want to recommend it to my brother for use on his muscles and joints. But he has COPD and I am concerned that the same ingredient affecting my dog's respiratory system will also affect my brother's respiratory issues with COPD. Please let me know ASAP.