Table 2.
Primary outcomes for different plant extracts. 1
| Plant Extract of 2 | Study | Daily Dosage of Bioactive Phytochemical | Primary Outcomes | Follow-Up |
|---|---|---|---|---|
|
Camellia sinensis L. Kuntze (green tea) |
Auvichayapat et al., 2008 [48] | 100.7 mg EGCG | 0 | 3 months |
| Diepvens et al., 2005 [49] | 1207 mg catechins (596 mg EGCG, 126 mg EC) | 0 | 3 months | |
| Dostal et al., 2017 [50] | 1315 mg catechins (843 mg EGCG) | 0 | 1 year | |
| Fernandes et al., 2018 [51] | 752 mg EGCG | + | 1 day | |
| Josic et al., 2010 [52] | 32.4 mg EGCG 25.5 mg EC |
+ | 1 day | |
| Mangine et al., 2012 [55] | 105 mg EGCG | 0 | 2 months | |
| Reinbach et al., 2009 [53] | 1796 mg catechins | + | 3 weeks | |
| Rondanelli et al., 2009 [56] | 100 mg EGCG | + | 2 months | |
| Westerterp-Plantenga et al., 2005 [54] | 270 mg EGCG | 0 | 3 months | |
| Capsicum annuum L. | Hochkogler et al., 2014 [57] | 0.15 mg nonivamide | + | 1 day |
| Janssens et al., 2014 [21] | 7.68 mg capsaicin | + | 2 days | |
| Lejeune et al., 2003 [59] | 135 mg capsaicin | 0 | 3 months | |
| Reinbach et al., 2009 [53] | 1530 mg cayenne | + | 3 weeks | |
| Urbina et al., 2017 [58] | 2 or 4 mg capsaicinoids | 0 | 3 months | |
| Coffea sp. | Greenberg and Geliebter, 2012 [60] | 6 mg per kg body weight | 0 | 1 day |
| Panek-Shirley et al., 2018 [61] | 1 or 3 mg per kg body weight | 0 | 1 day | |
| Roshan et al., 2018 [63] | 800 mg decaffeinated green coffee bean extracts | + | 2 months | |
| Schubert et al., 2014 [62] | 4 mg per kg body weight | 0 | 1 day |
“0” No statistically significant difference (p > 0.05) between intervention and placebo. “+” Statistically significant difference (p < 0.05) between intervention and placebo in at least one of the four outcomes (appetite, hunger, fullness, or satiety). 1 EC, epicatechin; EGCG, epigallocatechin gallate. 2 For exact composition, see Table S4 (Supplementary Materials).