For plenty of people, trying a supplement for the first time is a little daunting. And most high-quality supplements cost a lot, so that can make it even tougher. But when you opt to try the free trial of Xtreme Nitro first, all you have to do is pay shipping, which is less than $4! you get a bottle for 30 days, and if you don’t like it, it is free to keep as long as you cancel your subscription. If you are shipped a bottle you don’t want, just send it back and get reimbursed for the full purchase price. However, it is important to realize that shipping costs are not refunded, and that you are responsible for paying shipping both ways, even on return trips.