Assertion: psilocybin's effect | /r/HasProperty | headache
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Source sentences:
text: Side effects occurred with all doses, and included: anxiety, headache, fatigue, muscle tension, difficulty sleeping (insomnia), and suicidal thoughts.
text: Physical effects include nausea, yawning, headaches, and increased heart rate, blood pressure, and temperature.﻿﻿ Mental effects include feeling relaxed and having introspective experiences that may feel spiritual as well as unpleasant effects like nervousness, paranoia, and panic reactions.
text: The effects of mescaline include visual hallucinations and altered states of consciousness, but can also include vomiting, headaches and fear/anxiety.