Emotion suppression - This component has been claimed as currently being a lot more outstanding than with other stimulants, and is particularly in-line with the observed emotion-suppressing effects that have been noticed with other stimulants, but particularly methylphenidate and linked compounds. 4F-MPH has a particularly short history of recreational use. https://sergiouusqn.blogsumer.com/29735838/what-does-4f-php-effects-mean