Intravenous LD-50s
Scientific name Common name (or species complex) LD-50 (mg/kg) Notes
 Pseudonaja textilis  Eastern brown snake  0.01
Oxyuranus scutellatus Coastal taipan 0.013 Oxyuranus scutellatus canni (Papua New Guinea taipan) should be considered as having the same venoms composition until proven otherwise
Notechis scutulatus Mainland tiger snake 0.04 Geographic locations not given, variations of venom across range significant
Crotalus tigris Tiger rattlesnake 0.056
Dispholidus typus Boomslang 0.071
Crotalus viridis concolor Midget faded rattlesnake 0.0825
Bungarus multicinctus Many banded krait 0.113
Daboia russelli russelli Russels viper 0.133
Laticauda laticauda Banded sea krait 0.163
Bungarus caeruleus Indian krait 0.169
Hydrophis fasciatus Banded small headed sea snake 0.175
Crotalus scutulatus scutulatus Mojave green rattlesnake 0.189
Bitis caudalis Horned puff adder 0.2
Pelamis platurus Yellow bellied sea snake 0.22
Crotalus scutulatus salvini Huamantlan rattlesnake 0.24
Acanthophis antarcticus Common death adder 0.25 Species complex, geographical data not indicated
Atractaspis engaddensis Mole viper 0.25
Dendroaspis polylepsis Black mamba 0.25
Enhydrina schistosa Beaked sea snake 0.26
Crotalus durissus terrificus Cascabel 0.262
Pseudocerastes fieldi Field's horned viper 0.275
Naja melanoleuca Black forest cobra 0.289
Micrurus fulvius coral snake species 0.3
Pseudechis australis Mulga snake 0.3
Vipera palaestinae Palestine viper 0.3
Walterinnesia aegyptia Desert cobra 0.3
Laticauda semifasciata sea snake species 0.34
Naja atra Chinese cobra 0.345
Vipera latifii True viper species 0.348
Naja naja Spectacled cobra 0.35 Careful - any Asiatic cobra may have been referred to as N. naja in the past
Trimeresurus albolabris White lipped tree viper 0.37
Naja kaouthia Monocled cobra 0.373
Deinagkistrodon acutus Sharp-nosed pit viper 0.38 Fomerly in Agkistrodon genus
Micrurus nigrocinctus Black banded coral snake 0.394
Daboia russelii formosensis Russell's viper subspecies 0.4 Synonym of D.r. siamensis, locality info lacking
Laticauda colubrina Banded sea krait 0.4
Naja haje Egyptian cobra 0.42 Give locality - southern African forms now regarded as separate species, N. annulifera
Hydrophis cyanocinctus Annulated sea snake 0.456
Bothrops jararacussu Jararacussu' 0.46
Pseudechis porphyriacus Red-bellied black snake 0.54
Vipera berus Adder 0.55
Naja nivea Cape cobra 0.57
Vipera bornmuelleri True viper species 0.605
Naja nigricollis Black necked spitting cobra 0.63
Cerastes vipera Sahara sand viper 0.64
Macrovipera lebetina Levantine viper 0.64 Specimens from N. Africa are referrable to M. mauretanica
Echis pyramidum (Egypt) Saw-scaled viper 0.65 Formerly part of E. carinatus species complesx
Dendroaspis jamesoni Jameson's mamba 0.72
Micrurus alleni coral snake species 0.74
Tropidolaemus wagleri Wagler's viper 0.7833 Formerly in Trimeresurus genus
Dendroaspis viridis Western green mamba 0.8
Lapemis hardwickii Hardwicke's sea snake 0.8
Vipera ammodytes Long-nosed viper 0.8
Pseudocerastes persicus Persian viper 0.83 Or P. fieldi, depending on locality
Echis pyramidum (Kenya) Saw-scaled viper 0.94 Formerly part of E. carinatus species complex
Naja oxiana Central Asian cobra 0.96 Central Asian cobra, Oxus cobra,
Vipera aspis Asp viper 1
Crotalus viridis viridis Prarie rattlesnake 1.01
Micrurus dumarillii coral snake species 1.02
Bothrops jararaca Jararaca 1.1
Crotalus viridis helleri Southern Pacific rattlesnake 1.135
Thelotornis kirtlandi Twig snake 1.24
Bothrops asper Terciopelo 1.244
Crotalus durissus durissus Neotropical rattlesnake 1.244
Bungarus fasciatus Banded krait 1.289
Rhapdophis subminatus Red-necked keeled snake 1.29 A very toxic colubrid, was popular in the pet trade as "harmless"
Ophiophagus hannah King cobra 1.31 Give locality, this species is about to be split
Bitis arientas Puff adder 1.32
Dendroaspis angusticeps Eastern green mamba 1.5
Hemachatus haemachatus Rinkhals 1.5
Crotalus intermedius rattlesnake species 1.58
Atropoides picadoi Central American pitviper species 1.6 Formerly in Bothrops genus
Bothriechis schlegelii Eyelash viper 1.6 Formerly in Bothrops genus
Crotalus willardi willardi Ridge-nosed rattlesnake 1.61
Crotalus adamanteus Eastern diamondback rattlesnake 1.65
Echis pyramidum (Saudi Arabian) Saw-scaled viper 1.67 Or E.c. sochureki if from Western Saudi Arabia, formerly part of E. carinatus species complex
Micrurus annulatus hertwigi coral snake species 1.76
Bothrops alternatus Urutu 1.96
Agkistrodon piscivorus leucostoma Western cottonmouth 2.044
Vipera palaestinae Palestine viper 2.09
Crotalus horridus horridus Timber rattlesnake 2.107
Daboia russelli siamensis Russell' viper subspecies 2.11 Essential to indicate locality, as venom varies!
Crotalus exul rattlesnake species 2.17
Hydrophis ornatus Reef sea snake 2.2
Atractaspis dohomeyensis Mole viper 2.24
Bothrops colombiensis South American pitviper species 2.3
Bothrops neuwiedi Jararaca pintada 2.3
Agkistrodon bilineatus Cantil 2.4
Agkistrodon bilineatus taylori Ornate cantil 2.4
Atropoides nummifer Jumping viper 2.4 Formerly in Bothrops genus
Agkistrodon contortrix mokasen Northern copperhead 2.7
Echis ocellatus (Nigeria) Saw-scaled viper 2.71 Formerly part of E. carinatus species complex
Crotalus atrox Western diamondback rattlesnake 2.72
Bothrops atrox Barba amarilla 2.835 Species complex, geographical origin not given
Echis carinatus sochureki(Pakistan) Saw-scaled viper 2.98 Formerly part of E. carinatus species complex
Trimeresurus okinavensis Himehabu 3
Crotalus pricei pricei Twin-spotted rattlesnake 3.07
Echis carinatus multisquamatus (Iran) Saw-scaled viper 3.26 Formerly part of E. carinatus species complex
Crotalus polystictus Mexican blotched rattlesnake 3.37
Trimeresurus flavoviridis Okinawa habu 3.689
Agkistrodon piscovorus Cottomouth/ Water moccasin 4
Aipysurus eydouxii Spine-tailed sea snake 4
Cerastes cerastes Desert horned viper 4
Echis coloratus Carpet viper 4.375
Praescutata viperina Viperine sea snake 4.5
Lachesis muta Bushmaster 4.51 Give locality, as L. muta recently split into 3 species
Porthidium nasuta Hognosed viper 4.6 Formerly in Bothrops genus
Cerastes cornutus Desert horned viper 5.05 Synonym of C. cerastes
Calloselasma rhodostoma Malayan pit viper 5.2 Fomerly in Agkistrodon genus.
Trimeresurus elegans Sakishima habu 5.225
Trimeresurus mucrosquamatus Chinese habu 5.225
Trimeresurus stejnegeri Chinese green tree viper 5.225
Vipera xanthina Near east viepr 6.7
Bitis gabonica Gaboon viper 6.722
Eristicophis macmohoni Asian sand viper 7.5
Crotalus lepidus klauberi Rock rattlesnake 9
Causus rhombeatus Night adder 9.25
Gloydius halys Pallas' viper 9.75 Fomerly in Agkistrodon genus. Misleading, most data likely to refer to G. blomhoffii; common name Mamushi
Agkistrodon contortrix contortrix Southern copperhead 10.9
Sistrurus milarius barbouri Red pygmy rattlesnake 12.59
Pseudocerastes persicus Persian horned viper 15.26