Therapy The cure of overdosage with promethazine and phenylephrine is essentially symptomatic and supportive. Only in cases of extreme overdosage or unique sensitivity do important indicators which include respiration, pulse, hypertension, temperature, and EKG must be monitored. Activated charcoal orally or by lavage may be supplied, or sodium or magnesium https://waltx455kgb2.governor-wiki.com/user