Energy Boost

Nutrients connected to Energy Boost

A link means the body needs the nutrient for this, or that low intake is linked to it. It does not mean extra supplements help if your intake is already adequate; each link shows how strong the evidence is.

• Vitamin B2Established role

  Riboflavin helps release energy from food. In people who are not deficient, we found no good evidence that extra riboflavin increases energy.

• Caffeine supplementsPreliminary or mixed

  Caffeine stimulates the central nervous system and can make people feel more awake for roughly four to six hours. Part of the lift in regular users may be relief from withdrawal.

• GuaranaPreliminary or mixed

  Guarana contains caffeine, a stimulant. Small studies and meta-analyses of guarana suggest at most a small, short-term effect, probably through its caffeine; results for cancer-related fatigue conflict.

• GuayusaPreliminary or mixed

  One small trial found more perceived energy after one extract dose; the likely driver is caffeine, and a higher dose did not improve mood.

• Energy and Focus BlendsPreliminary or mixed

  Caffeine gives a short-lived lift in alertness in the sources we read, though MedlinePlus calls the data on energy drinks limited. B vitamins in the blend help release energy from food but are not shown to add energy when intake is adequate.

• Guayusa TeaPreliminary or mixed

  One small extract trial found lower fatigue and higher perceived energy after a single dose; caffeine is a likely driver and tea was not tested.

• Pre-Workout SupplementsPreliminary or mixed

  Caffeine increases alertness short-term; this does not mean more real energy or recovery.

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