Nithiodote Side Effects

6 ADVERSE REACTIONS There have been no controlled clinical trials conducted to systematically assess the adverse events profile of sodium nitrite or sodium thiosulfate.

The medical literature has reported the following adverse events in association with sodium nitrite or sodium thiosulfate administration.

These adverse events were not reported in the context of controlled trials or with consistent monitoring and reporting methodologies for adverse events.

Therefore, frequency of occurrence of these adverse events cannot be assessed.

Most common adverse reactions are: Sodium nitrite : syncope, hypotension, tachycardia, palpitations, dysrhythmia, methemoglobinemia, headache, dizziness, blurred vision, seizures, confusion, coma ( 6 ) Sodium thiosulfate : hypotension, headache, disorientation ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Hope Pharmaceuticals at 1-800-755-9595 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

S odium Nitrite Cardiovascular system: syncope, hypotension, tachycardia, methemoglobinemia, palpitations, dysrhythmia Hematological: methemoglobinemia Central nervous system: headache, dizziness, blurred vision, seizures, confusion, coma Gastrointestinal system: nausea, vomiting, abdominal pain Respiratory system: tachypnea, dyspnea Body as a Whole : anxiety, diaphoresis, lightheadedness, injection site tingling, cyanosis, acidosis, fatigue, weakness, urticaria, generalized numbness and tingling Severe hypotension, methemoglobinemia, cardiac dysrhythmias, coma and death have been reported in patients without life-threatening cyanide poisoning but who were treated with injection of sodium nitrite at doses less than twice those recommended for the treatment of cyanide poisoning.

Sodium Thiosulfate Cardiovascular system: hypotension Central nervous system: headache, disorientation Gastrointestinal system: nausea, vomiting Hematological : prolonged bleeding time Body as a Whole: salty taste in mouth, warm sensation over body In humans, rapid administration of concentrated solutions or solutions not freshly prepared, and administration of large doses of sodium thiosulfate have been associated with a higher incidence of nausea and vomiting.

However, administration of 0.1 g sodium thiosulfate per pound up to a maximum of 15 g in a 10-15% solution over 10-15 minutes was associated with nausea and vomiting in 7 of 26 patients without concomitant cyanide intoxication.

In a series of 11 human subjects, a single intravenous infusion of 50 mL of 50% sodium thiosulfate was associated with increases in clotting time 1-3 days after administration.

However, no significant changes were observed in other hematological parameters.