Common Breathlessness, Headache, Nausea, Palpitations, Increased heart rate, Arrhythmia, Chest pain, Vomiting, Decreased blood pressure.

Expert advice for Dopamine Hcl Injection
Your breathing, blood pressure, oxygen levels, kidney function, and other vital signs will be watched closely while you are receiving dopamine.Take precautions if you have or had any of the following medical conditions: coronary artery disease (hardened arteries), circulation problems such as Raynaud's syndrome, a history of blood clots, diabetes, frostbite, Buergers disease, asthma, sulfite allergy, or if you have used an MAO inhibitor in the last 21 days.Tell your doctor if you are or planning to become pregnant or are breast-feeding.

Q. Is Dopamine hcl a hormone/ a neurotransmitter/ a catecholamine/ a monoamine/ a chemical/ a stimulant/ a protein/ a vasopressor?
Dopamine hcl is not a protein; it is a chemical, hormone, neurotransmitter, stimulant, monoamine, catecholamine and a vasopressor

Q. Does Dopamine hcl cause vasodilation/ anxiety/ make you tired/increase libido/ increase systemic vascular resistance (svr)/ cause addiction?
Dopamine hcl causes vasodilation and may increase systemic vascular resistance possibly when taken in high amounts. Dopamine hcl use can lead to addiction

Q. Is Dopamine hcl inhibitory or excitatory/ does Dopamine hcl inhibit prolactin?
Dopamine hcl is a special neurotransmitter because it is considered to be both excitatory and inhibitory. It is a prolactin inhibitor.