I would guess this is the common link among them.
You might want to take note of this part:
ADRs associated with ephedrine therapy include:[13]
Cardiovascular: tachycardia, cardiac arrhythmias, angina pectoris, vasoconstriction with hypertension
Dermatological: flushing, sweating, acne vulgaris
Gastrointestinal: anorexia, nausea
Genitourinary: decreased urination due to vasoconstriction of renal arteries. Also, difficulty urinating is not uncommon, as alpha-agonists such as ephedrine constrict the internal urethral sphincter, mimicking the effects of sympathetic nervous system stimulation.
Nervous system: restlessness, confusion, insomnia, mild euphoria, mania/hallucinations (rare except in previously existing psychiatric conditions), delusions, formication (may be possible, but lacks documented evidence) paranoia, hostility, panic, agitation
Respiratory: dyspnea, pulmonary edema
Miscellaneous: dizziness, headache, tremor, hyperglycemic reactions, dry mouth