Marrubio/Horehound

Respiratory health
Cough and cold relief: Horehound is commonly used to ease coughs, soothe sore throats, and help reduce phlegm and clear congestion due to its expectorant properties.
Respiratory support: It is believed to support the mucous membranes in the larynx and bronchi and may help with conditions like bronchitis, asthma, and whooping cough.
Thinning mucus: The chemicals in white horehound are thought to thin mucus secretions, making it easier to expel them. 
Digestive health
Digestive aid: The bitter qualities of horehound may stimulate digestion and help with issues such as indigestion, bloating, and loss of appetite.
Stomach and intestinal health: It is thought to reduce spasms in the stomach and intestines and may help regulate bowel movements and alleviate constipation.
Gallbladder support: Horehound might also aid in bile secretion. 
 
Other potential benefits
 
Anti-inflammatory: Horehound has been noted for its anti-inflammatory properties, potentially beneficial for reducing inflammation in the respiratory and digestive systems.
Antioxidant: It contains antioxidants which may help protect the body from oxidative stress.
Immune booster: Horehound contains vitamins and minerals that may contribute to a stronger immune system.
Topical uses: It can be applied topically to help with skin damage, ulcers, and wounds.
Possible blood glucose effects: Some research suggests horehound may influence blood glucose levels, potentially leading to a drop, but more studies are needed for definitive conclusions.