Do not take NIPRESS 50MG INJECTION if you are allergic to any of its components or if you have low brain circulation or anaemia. Inform your doctor if you have liver disease, severe kidney disease, hereditary vision loss (Leber’s disease), vision problems caused by smoking, a history of blood clots in the brain, vitamin B12 deficiency, hypovolaemia (low blood volume), raised intracranial pressure (raised pressure within the head), thyroid problems, high blood pressure, seizure, head injury or brain tumour, difficulty breathing, or hypothermia (decreased body temperature). Consult your doctor if you are pregnant or breastfeeding.