Antidote List

Apixaban or Rivaroxiban

Antidote: Andexanet AlphaCategory: BRecommended Stock:

Current GRI Stock: 12 vials

Location: Emergency Fridge Door

Presentation: acute liver injury, anaemia, haemorrhage, GI upset, dizziness and headache

Benzodiazepines

Antidote: Flumazenil

Category: BRecommended Stock: 5 ampoules

Current GRI Stock: 10 ampoules

Location: Sedation cupboard

Indication: Reduced ventilation and coma that would otherwise need mechanical ventilation.

Presentation: Drowsiness, ataxia, dysarthria and nystagmus.

Beta-Adrenoreceptor Blockers

Antidote: GlucagonCategory: ARecommended Stock:  50 VialsCurrent GRI Stock: 10x1mg injections/20x 1mg injectionsLocation: Main Fridge / Resus FridgeIndication: Severe HypotensionPresentation: Cardiovascular collapse. Lipid soluble also cause CNS effects

Antidote: Atropine

Category: A

Recommended Stock: 10 Ampoules

Current GRI Stock: 10 ampoules/20 ampoules (600mcg) + 4 1mg pens/8 x1mg syringe

Location: IV cupboard 1/resus room/major incident bag

Indication: Bradycardia

Presentation: Cardiovascular collapse. Lipid soluble also cause CNS effects

Calcium Channel Blockers

Antidote: Calcium ChlorideCategory: ARecommended Stock: 6 AmpoulesCurrent GRI Stock: 2 x 10ml syringe

Location: IV Cupboard 2

Indication: Hypotension

Presentation: Hypotension. Bradycardic if verapamil or diltiazem

Antidote: Glucagon

Category: A

Recommended Stock: 50 Vials

Current GRI Stock: 10 x 1 mg injections / 20 x 1mg injections

Location: Main Fridge / Resus Fridge

Indication: Severe Hypotension

Presentation: Hypotension. Bradycardic if verapamil or diltiazem

Class 1a & Class 1c Antiarrythmics

Antidote: Sodium bicarbonate 8.4%Category: A

Recommended Stock: 3 polyfusers

Current GRI Stock: 10 x 250ml

Location: Resus room

Cyanide

Antidote: Hydroxocobalamin (Cyanokit)Category: A

Recommended Stock: 2 packs

Indication: Moderate/severe poisoning (can cause AKI due to tubular necrosis)

Antidote: Sodium thiosulphateCategory: A

Recommended Stock: 5 ampoules

Current GRI Stock: 2 x 50ml

Location: Shelf L - Emergency cupboard. Cyanide kit on Shelf N

Indication: Mild poisoning or moderate if hydroxycoabalamin not available. Adjunct in severe

Cyclophosphamide

Antidote: MesnaCategory: B

Current GRI Stock: Not stocked locally - only used in hours so could be sourced from pharmacy

Indication: Discuss with oncologist

Presentation: Myelosuppression and haemorrhagis cystitis

Dabigatran

Antidote: IdarucizumabCategory: B

Recommended Stock: 2 vials

Current GRI Stock: 2 vials

Location: Emergency fridge

Indication: Active bleeding or life-threatening haemorrhage

Digoxin

Antidote: DigifabCategory: B

Recommended Stock: 10 Vials

Current GRI Stock: 10 Vials

Location: Emergency Fridge

Indication: Severe bradycardia or lifethreatening ventricular arrhythmia, refractory severe hyperkalaemia

Presentation: Marked bradycardia, PR and QRS prolongation, AV block

Dystonic Reactions

Antidote: Procyclidine injectionCategory: A

Recommended Stock: 5 ampoules

Current GRI Stock: 5 ampoules

Location: IV cupboard 1

Indication: Dystonic reactions

Ethylene Glycol

Antidote: FomepazoleCategory: B

Recommended Stock: 25 ampoules

Current GRI Stock: 4x 1.5mg vials

Location: Shelf M - Emergency cupboard

Indication: High anion gap metabolic acidosis or osmolar gap greater than 10 without other likely cause

Presentation: Features of intoxication initially high osmolar gap then falls with rising anion gap (due to production of toxic metabolites)

Antidote: EthanolCategory: B

Current GRI Stock: Not required as fomepazole stocked

Indication: If fomepazole is not immediately available

Presentation: Features of intoxication initially high osmolar gap then falls with rising anion gap (due to production of toxic metabolites)

European Adder

Antidote: ViperaTAbCategory: A

Recommended Stock: 2 ampoules

Indication: Bites by Vipera berus

Gut Decontamination if not bounded by Charcoal

Antidote: Macrogol 3350 (polyethylene glycol) Klean-prepRecommended Stock: 12 sachets

Heparin

Antidote: Protamine sulphateCategory: B

Recommended Stock: 10 ampoules

Current GRI Stock: 10 ampoules

Location: IV cupboard 1

Indication: Evidence of haemorrhage or large amount injected

Hydrofluoric Acid (local infiltration)

Antidote: Calcium gluclonateCategory: A

Recommended Stock: 10 ampoules

Current GRI Stock: 20 ampoules

Location: IV cupboard 2/resus room

Indication: Small volume subcutanoues injections around burn site

Presentation: Highly corrosive, pain disproportionate to size of burn. Blue-grey discoloration

Hydrofluoric Acid (topical)

Antidote: Calcium gluconate gelCategory: A

Recommended Stock: 1 pack

Current GRI Stock: 2 packs

Location: Cupboard under counter (left)

Indication: Apply repeatedly until pain has ceased

Iron

Antidote: DesferrioxamineCategory: B

Recommended Stock: 40 vials

Current GRI Stock: 10 vials

Location: Shelf D - Emergency cupboard

Indication: Give ASAP before waiting for serum iron result if severe poisoning. Give if level >5mg/l and symptomatic. Consider if iron levels rising

Antidote:Macrogel 3350 (Klean-prep)Category: B

Recommended Stock: 12 sachets

Indication: Give ASAP before waiting for serum iron result if severe poisoning. Give if level >5mg/l and symptomatic. Consider if iron levels rising

Isoniazid

Antidote: Pyridoxine (high dose injection)Category: B

Recommended Stock: 100 ampoules

Indication: CNS symptoms

Local Anaesthetic Toxicity

Antidote: Intralipid 20%Category: A

Recommended Stock: 1.5 litres

Current GRI Stock: 1 litre

Location: Sedation cupboard

Methaemoglobinaemia

Antidote: MethylthioniniumCategory: A

Recommended Stock: 5 ampoules

Current GRI Stock: 5 ampoules

Location: Sedation cupboard

Methanol

Antidote: Calcium folinateCategory: B

Recommended Stock: 5 ampoules

Current GRI Stock: 5 ampoules

Location: Emergency fridge

Antidote: FomepazoleCategory: B

Recommended Stock: 25 ampoules

Current GRI Stock: 4x 1.5mg vials

Location: Shelf M - Emergency cupboard

Methotrexate

Antidote: Calcium folinateCategory: B

Recommended Stock: 15 ampoules

Current GRI Stock: 5 ampoules

Location: Emergency fridge

Indication: Clinical symptoms of methotrexate toxicity (mucositis, oropharyngeal ulceration) or signs of bone marrow suppression, hepatotoxicity or renal dysfunction. Or if >3mg/kg in 24 hours or unknown dose.

Neuroleptic Malignant Syndrome

Antidote: DantroleneCategory: B

Recommended Stock: 48 ampoules

Current GRI Stock: 24 vials

Location: Serotonin syndrome bag

Indication: Severe NMS

Presentation: Exposure to dopamine antagonist or agonist withdrawal, hyperthermia, rigidity, raised CK

Opioids

Antidote: NaloxoneCategory: A

Recommended Stock: 30 ampoules

Current GRI Stock: 10 ampoules

Location: IV cupboard 1

Indication: Respiratory depression

Presentation: Respiratory depression, pin-point pupils

Organophosphates

Antidote: AtropineCategory: A

Recommended Stock: 10 ampoules

Current GRI Stock: 10 ampoules

Location: IV cupboard 1/resus room/major incident bag

Indication: If increased secretions, rhinorrhoea, bradycardia, hypotension, bronchorrhoea or bronchospasm. Give every 5 minutes until secretions are minimal

Paracetamol

Antidote: AcetylcysteineCategory: A

Recommended Stock: 20 ampoules

Current GRI Stock: 60 ampoules

Location: IV cupboard 1

Indication: If over treatment line or staggered overdose

Serotonin Syndrome

Antidote: CyproheptadineCategory: B

Recommended Stock: 30 tablets

Current GRI Stock: 30 tablets

Location: Serotonin syndrome bag

Indication: In serious cases. Standard treatment is benzodiazepines and most self resolve within 24 hours

Antidote: Chlorpromazine 

Current GRI Stock: 10 ampoules

Location: Serotonin syndrome bag

Indication: Severe cases

Sodium Valproate

Antidote: L-carnitineCategory: B

Indication: Consider in large overdoses with coma, hyperammonaemia or hepatotoxicty or valproate concentration greater than 450mg/l

Sulphonylureas

Antidote: OctreotideCategory: B

Recommended Stock: 5 ampoules

Current GRI Stock: 10 ampoules

Location: Emergency fridge

Indication: Persistent hypoglycaemia despite glucose to suppress endogenous insulin production (non-diabetic or T2DM patients)

Tricyclic Antidepressants

Antidote: Sodium bicarbonate 8.4%Category: A

Recommended Stock: 3 polyfusers

Current GRI Stock: 10 x 250ml

Location: Resus room

Indication: Prolonged QRS (infusion amounts on toxbase)

Urinary Alkalinisation

Agent: Sodium bicarbonate 1.4%Category: A

Recommended Stock: 12 polyfusers

Location: Resus room

Indication: e.g salicylates and phenobarbitol. Target pH 7.5-8.5

Vitamin K Dependent Anticoagulants

Antidote: Phytomenadione (vitamin K1)Category: B

Recommended Stock: 2 tables, 10 ampoules

Current GRI Stock: 5 x 2mg ampoules, 10 x 10mg ampoules

Location: IV cupboard 1

Indication: Dose dependent on INR levels and whether there is active bleeding

Various

Antidote: Activated CharcoalCategory: A

Recommended Stock: 7 packs (50g pack)

Current GRI Stock: 8 packs (250ml solution)

Location: Cupboard under counter (left)

Indication: Presentation < 1 hour of ingestion