Effect: ACTIVE (Uplifting & Clear Headed) Strain: Formula One Flavor: Lemon Formula One Active The caffeine high without the jitters. With Drops, you can choose your edibles based on how you want to feel. That’s possible because Drops are made with strain-specific live rosin – a solventless, full spectrum cannabis concentrate. As a ‘full spectrum’ concentrate, rosin contains the full array of psychoactive compounds in cannabis, which work together to give each strain its unique effect.