Dextromethorphan; Diphenhydramine; Phenylephrine: (Moderate) Although the pressor activity of desmopressin is very low compared to its antidiuretic activity, large doses of desmopressin should be used with other pressor agents like phenylephrine only with careful patient monitoring. Hougaard C, Matthiesen TB, Rittig S, Djurhuus JC. Subscribe to Drugs.com newsletters for the latest medication news, new drug approvals, alerts and updates. 1.2 mg/day PO, 4 mcg/day SC/IV; Alt: 2-4 mcg/day SC/IV divided qd-bid; Info: give 1st PO dose 12h after last intranasal dose when switching to PO; parenteral dose is approx. Some have suggested an initial dosage range of 0.1 to 1 mcg in 1 or 2 divided doses. The pump will stay primed for up to 1 week. David McAuley, Pharm.D. Her serum sodium concentration was 124 mmol/L within a day and was 135 mmol/L by the second day. Codeine; Phenylephrine; Promethazine: (Moderate) Although the pressor activity of desmopressin is very low compared to its antidiuretic activity, large doses of desmopressin should be used with other pressor agents like phenylephrine only with careful patient monitoring. PDF Intravenous to Oral Therapy Conversion - FormWeb A woman who took both desmopressin and ibuprofen was found in a comatose state. Carbetapentane; Phenylephrine; Pyrilamine: (Moderate) Although the pressor activity of desmopressin is very low compared to its antidiuretic activity, large doses of desmopressin should be used with other pressor agents like phenylephrine only with careful patient monitoring. The woman had previously received desmopressin without the development of clinical symptoms of hyponatremia Valsartan; Hydrochlorothiazide, HCTZ: (Moderate) Monitor serum sodium more frequently during concomitant desmopressin and thiazide diuretic use due to increased risk of water intoxication with hyponatremia. Desmopressin has been used safely in many women during pregnancy, including those with bleeding disorders and diabetes insipidus. Desmopressin is a strong V2 agonist and has no effect on V1 receptors. Step-down therapy: changing to an oral drug that is a different compound and has different frequency, dose, or spectrum of activity. anaphylactoid reactions / Rapid / 0-1.0anaphylactic shock / Rapid / 0-1.0seizures / Delayed / Incidence not knownwater intoxication / Delayed / Incidence not knowncoma / Early / Incidence not knownthrombosis / Delayed / Incidence not knownthromboembolism / Delayed / Incidence not knownstroke / Early / Incidence not knownmyocardial infarction / Delayed / Incidence not known, hyponatremia / Delayed / 0.9-12.0hypertension / Early / 1.7-2.6photophobia / Early / 0-2.0conjunctivitis / Delayed / 0-2.0confusion / Early / Incidence not knownelevated hepatic enzymes / Delayed / Incidence not knownhypotension / Rapid / Incidence not knownsinus tachycardia / Rapid / Incidence not knownpalpitations / Early / Incidence not knowninfertility / Delayed / Incidence not knownbalanitis / Delayed / Incidence not knowntolerance / Delayed / Incidence not known, xerostomia / Early / 0-14.0rhinitis / Early / 3.0-8.0headache / Early / 2.0-5.0pharyngitis / Delayed / 2.3-3.8dizziness / Early / 0-3.0epistaxis / Delayed / 2.0-3.0nasal congestion / Early / 1.4-2.9sneezing / Early / 2.3-2.6back pain / Delayed / 1.1-2.3chills / Rapid / 0-2.0asthenia / Delayed / 0-2.0rhinalgia / Early / 2.0-2.0ocular pruritus / Rapid / 0-2.0lacrimation / Early / 0-2.0diarrhea / Early / Incidence not knownabdominal pain / Early / Incidence not knowndyspepsia / Early / Incidence not knownnausea / Early / Incidence not knownlethargy / Early / Incidence not knownflushing / Rapid / Incidence not knowncough / Delayed / Incidence not knowninjection site reaction / Rapid / Incidence not knownoligospermia / Delayed / Incidence not known.