Guarana effects on human organism: 

• complex action on entire organism, ideal in case of performance of any continuous activity that requires concentration
• eliminates tiredness and feeling of exhaustion
• improves blood circulation and prolongs life
• supports cardiac activity, positive action on potency
• stimulates brain functions, develops creative skills and relieves stress
• releases lactic acid from muscles, thus moderating pain
• maintains face skin free of wrinkles and fertility till high age
• potentiates function of liver and avoids cholesterol sedimentation 

• rhinitis, cough, higher temperature, sweating
• aching muscles, photodysphoria, lack of appetite
• urinary tract inflammation and breathing problems due to cold
• with side effects of anti-influenza medicals acting on gastric mucosa and with gastritis