Some powdered fruit and vegetable supplements have been studied, and the nutrients they contain seem to be bioavailable, meaning that they can be absorbed and measured in the bloodstream after they’ve been ingested. Participants in several studies consistently exhibited increased levels of carotenoids, lutein, lycopene, folate, vitamin C, and vitamin E in their blood after taking powdered fruit and vegetable supplements.[1][2][3]
There’s also some evidence that these products can influence certain health biomarkers. Tumor necrosis factor-alpha and C-reactive protein – markers of inflammation – might be reduced after taking powdered fruit and vegetable supplements. These supplements may also reduce levels of homocysteine and oxidized low-density lipoprotein (LDL) cholesterol. However, these effects aren’t seen consistently across studies.[3][4][5][6]