Instead of feeding your dog vitamin water, provide him with a healthy diet that includes plenty of fresh fruits and vegetables and meat-based proteins. If you want to give him a special treat once in a while, make homemade treats instead. Some great alternatives to vitamin water for your dog include: Water – It's simple, but it works. If your dog is dehydrated, give him some fresh water. He will be hydrated and feeling better in no time. If he doesn't like plain water, add a little ice and stir until it's cold enough for him to drink it down. You can also add a little salt to ensure he gets extra sodium. Homemade water – Your dog can stay hydrated, especially with the heatwave in the summer. However, instead of relying on artificial sweeteners and colors, make homemade water for your pup. Just mix one part club soda and two parts water in a pitcher and refrigerate overnight so that it gets nice and cold. Moreover, add natural lemon juice or mint leaves for flavor. Add some chicken broth or even ice cubes for a cooler drink if you want something more substantial than just plain water. Coconut Water – This is another excellent way to keep your dog hydrated without worrying about harmful additives like artificial sweeteners or colors. Coconut water has fewer calories than most other fruit juices and contains electrolytes that help replace minerals lost through sweat when exercising hard outdoors on hot days. Plus, it tastes delicious. However, consider giving it to your dog in small amounts occasionally. Too much coconut water can be harmful to your canine companion. Milk – Milk is an excellent source of calcium and protein. It also tastes delicious with vanilla or chocolate flavors. Other alternatives include: Apple cider vinegar mixed with water – This is especially good for dogs who need to lose weight, Small portions of unsweetened yogurt mixed with warm water and honey once in a while.