Lemon Good For Dogs. You can use lemon for dogs in many ways, including as a flea repellent, to help a dog's coat and skin, for first aid, as a source of vitamin c, and even with training. Lemons are most effective at this job.
She also warns that since lemon juice is very acidic, it presents a higher risk of disrupting a dog’s acid base balance. The fruit can cause digestive problems. In dogs, lemon balm can be used for numerous health issues, including stress, anxiety, depression, and digestive problems, especially gas.