Found the following hamletworks.org entries referring to line 3843

View Commentary Note for 3841, etc.
3841 Ham. O I die Horatio,5.2.352
3842 The potent poyson quite ore-crowes my spirit, 
3843 I cannot liue to heare the newes from England,5.2.354

View Immaterial Textual Note for 3841, etc.
n3841 Ham. O I die Horatio,5.2.352
3842 The potent poyson quite ore-crowes my spirit, 
3843 I cannot liue to heare the newes from England,5.2.354

View Material Textual Note for 3841, etc.
n3841 Ham. O I die Horatio,5.2.352
3842 The potent poyson quite ore-crowes my spirit, 
3843 I cannot liue to heare the newes from England,5.2.354