Yes, just to add to water. It’s simple but it’s kinda thick so you have to learn the tricks buy one 50ML/500mg bottle to practice on and keep your larger bottles for when you know what your doing. Don’t inject air into the vial like people say to make it easier, it can contaminate the vial. You remove the metal top and there’s a rubber self sealing topper on it. Always sterilize the stopper before using, I use peroxide and let it dry. Use a new syringe, you can use it multiple times if you’re pulling doses for multiple people I do 5 people, just don’t touch the needle to anything. I shoot it into a cup then grab the next dose out. When I’m done I toss the syringe/needle. Drink away, it doesn’t taste bad. And don’t forget the zinc, 30mg of elemental zinc per day.