Assertion: ephedrine's use | /r/Causes | headache
Facets:
Source sentences:
text: Using guarana in very high amounts by mouth or injected can cause headache, anxiety, nervousness, agitation, pain when urinating, stomach cramps, irregular heartbeats, and it can be dangerous and even fatal.
text: Use over the recommended dose of about 120 μg can cause muscle tremors, headache, dizziness, and gastric irritation.