Adrenergic means "having to do with adrenaline (epinephrine) and/or noradrenaline (norepinephrine)".
For instance, regarding proteins:
- Adrenergic receptor
- Adrenergic transporter
And, regarding drugs:
- Adrenergic receptor agonist
- Adrenergic receptor antagonist
- Adrenergic reuptake inhibitor