Guarana and Caffeine: study protocols
6 study groups took Guarana together with Caffeine. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Guarana
6 study groups in 4 studies say how much Guarana participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 250 mg to 500 mg, 50% of 6 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mg or less | 1 |
| 100 mg to 250 mg | 2 |
| 250 mg to 500 mg | 3 |
Commonly used together
4 of 6 study groups took Guarana and Caffeine with something else, but nothing that 3 or more different studies gave.
6 study groups
| Study | ||||
|---|---|---|---|---|
| Effects of Dietary Supplementation of a Microalgae Extract Containing Fucoxanthin Combined with Guarana on Cognitive Function and Gaming Performance 2023 · Low-dose PT microalgae extract + guarana (LD) · Experienced gamers aged 18–40 years, men and women, with BMI 18–34.9 kg/m² | 500 mg | — | 30 days | 25 |
| Acute Effect of Caffeine-Based Multi-Ingredient Supplement on Reactive Agility and Jump Height in Recreational Handball Players 2022 · caffeine and guarana (CAF + GUA) · Recreationally trained male handball players; mean age 23.8 ± 1.4 years; healthy | 200 mg | 200 mg | 1 day | 24 |
| Effects of Dietary Supplementation of a Microalgae Extract Containing Fucoxanthin Combined with Guarana on Cognitive Function and Gaming Performance 2023 · High-dose PT microalgae extract + guarana (HD) · Experienced gamers aged 18–40 years, men and women, with BMI 18–34.9 kg/m² | 500 mg | — | 30 days | 21 |
| Guarana (Paullinia cupana) but Not Low-Dose Caffeine Improves Cycling Time-Trial Performance Versus Placebo 2024 · guarana (GUA) · Endurance-trained adults, including cyclists and noncyclists; age and sex not reported | 500 mg | 130 mg | 1 day | 11 |
| Acute Effect of Caffeine-Based Multi-Ingredient Supplement on Reactive Agility and Jump Height in Recreational Handball Players 2022 · multi-ingredient supplement (MS) · Recreationally trained male handball players; mean age 23.8 ± 1.4 years; healthy | 200 mg | 200 mg | 1 day | 24 |
| Acute effectiveness of a "fat-loss" product on substrate utilization, perception of hunger, mood state and rate of perceived exertion at rest and during exercise 2015 · SHRED · Healthy recreationally active adults, 24 ± 3.8 years old; five women and seven men | 100 mg | 50 mg | 1 day | 12 |