Home Herbs Index H Heeng (Ferula foetida) (Gum Foetida) AllABCDEFGHIJKLMNOPQRSTUVWXYZ Heeng (Ferula foetida) (Gum Foetida) Pharmacological action: Carminative, nervine stimulant and expectorant. Medicinal use: Effective in liver, spleen and stomach ailments. Increases appetite, relieves inflammations and flatulence. Relaxes nerves and brain.