Natrum sulph [Nat-s]
If it assumes the form of a severe bilious remittent fever, and there is excess of bile. Vomit greenish, yellow-brown or black.
Ferrum phos [Ferr-p]
For the fever in alternation with the preceding. At the beginning of the attack.
Kali phos [Kali-p]
For collapse and depressed vital forces. Also for deep green, bluish or black vomit and haemorrhages.