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Guarana is a caffeine-containing plant, not a separate risk-free stimulant. The actual caffeine amount per...

1,000 mg guarana is not 1,000 mg caffeine. Distinguish plant powder, extracts and total declarations,...

Guarana capsules require the actual caffeine amount per unit and daily serving. Without precise labeling,...

Guarana is primarily a concentrated source of caffeine. Actual caffeine content, timing and total intake...