Table 5.

Additional symptoms.

Study Participant	Δ9-THC
	physical reactions
female 2	generalized tremors, vagal reaction
female 3	about to faint
female 5	about to faint, paleness
female 6	about to faint, orthostatic hypotension, sick feeling
female 8	flushing
	observed symptoms
males 2, 3, 6; females 1, 2, 3, 4, 8	Different handwriting, errors and corrections in filling out the questionnaires (still present at 2.5 h after the injection for males 3 and 6)
male 6	The participant kept the arm in a distinctively awkward position for 30 min
female 4	The participant committed errors when asked four times to recall words related to a memory task (night instead of black 2/4, vegetable instead of apple 3/4, crisis instead of cries 4/4)
female 8	The participant was internally absorbed and didn’t engage at all with a cognitive task
	reported long-lasting symptoms (telephone follow-up)
male 1	suspiciousness, hostility, tension, and poor impulse control until afternoon
male 1	headache, sick and weak feeling, fatigue, exhaustion, physical and mental strain until day after
male 2	tiredness, sleepiness, postprandial somnolence
male 6	disorientation and tiredness until evening
female 5	tiredness and cravings for savory foods until afternoon
female 6	tiredness, sleepiness, and hunger until the end of the day
female 9	sleepiness, thirst, and hungry
females 1 and 4	Symptoms reported during the trial were the same experienced in the past when using recreational cannabis
Study participant	Placebo
	physical reactions
female 1	flushing, drowsiness, stomach pain
female 6	flushing, increase in heart rate, heavy chest feeling
	reported long-lasting symptoms (telephone follow-up)
male 7	suspiciousness until afternoon

Δ9-THC, (−)-trans-Δ9-tetrahydrocannabinol.