Puppies are a lot of work. They have a lot of energy, and you have to put in the time investment in training them properly. When your puppy just doesn't seem to want to calm down, there are a few things you can do either in the home or outside. Let your puppy get their energy out naturally without giving any kind of medication, as this could alter their sleep cycle. Use this time as a way to get closer to your puppy and get some of your energy out as well.
Tricks and Treats
Games that involve food are almost a surefire way to drain the energy out of your puppy. He can perform tricks for you, or you can hide treats inside toys where they are hard to find. Another way to play with food is to hide treats around the house. Give your puppy one or two so they have the scent before leading them to other locations to try to find the remaining treats.
Most dogs enjoy a challenge. Set up an obstacle course in the home or outside that your puppy can maneuver. It can include everything from objects to jump over, to tunnels to run through. If you have more challenges in the course, then it will work the mind a bit more while keeping your puppy playing and moving around to figure out how to make it to the end. An obstacle course will also increase your dog's agility.
Playing in a Park
Sometimes, all your puppy needs is interaction with other dogs. Try to find a dog park, but if there isn't one nearby, then take your dog to a park with an open space where they can play with other dogs and run free. Keep him on a leash, because this is often a requirement for many parks. You can look up local laws at your parks, but it might be best to keep a leash on you just to avoid a personal injury case if your dog tends to bite. If you are able, use this opportunity to play fetch or other games where they can run a lot.
When puppies have a new toy, they'll usually spend a good bit of time trying to figure out how it works and how you can play with them. There are several types to choose from, such as stuffed animals or those that look like ropes. Get an assortment of toys for your puppy to challenge his mind and his physical skills.
Most puppies have a great deal of energy. It could seem that they just don't want to go to sleep when you're ready to go to bed at night, or when you're ready to do something else during the day. Stock up on toys, creating a few games to play with your puppy to keep him occupied.