Table 1.

Inclusion and exclusion criteria.

Inclusion criteria	Exclusion criteria
Age between 35–65 years	Active or history of substance or alcohol abuse
BMI between 18–30 kg/m2	History of major depression, bipolar disorder, or schizophrenia
POMS score >15 at screening	Use of medications of ADD or ADHD
CNSVS score >6 at screening	Smoking
	Caffeine intake of over four servings daily (roughly 300–400 mg)
	Use of any drugs or dietary supplements that may affect memory or mental performance
	Pregnant or lactating
	Any medical condition which in the opinion of the investigator might interfere with the subject's participation in the trial

BMI: body mass index.

POMS: profile of mood states.

CNSVS: CNS vital signs.