Mexican Dream Herb (Calea zacatechichi, also called “bitter grass”) is a flowering plant native to Mexico and Central America. It has a long history of use among Indigenous groups—especially the Chontal Maya—for dream enhancement and spiritual practices. 
 
Traditionally, it’s classified as an oneirogen—a substance believed to influence dreaming.
 
The primary reason people use this herb is for its effects on dreaming:
More vivid and intense dreams
Increased dream recall
Potential for lucid dreaming (being aware you're dreaming)
Longer or more frequent dream episodes
 
Some users also report a deeper sense of meaning or insight in dreams.
 
Considered mildly hallucinogenic
Can produce dream-like or altered mental states
 
Historically used for:
Digestive issues
Fever and inflammation
Mental clarity and focus
 
How to use it
 Tea (most common method)
Steep ~1 tablespoon (≈5g) of dried leaves in hot water
Drink before bed
Expect a very bitter taste
 
Smoking
Dried leaves can be smoked
Produces faster onset but shorter duration (PMC)
 
Tinctures - coming soon to Sagrada - or make your own!
Taken orally in measured doses
Easier than tea due to bitterness 
 
Traditional methods
Placing leaves under a pillow
 
Who should avoid it
Pregnant or breastfeeding individuals
People with mental health conditions
Those taking psychiatric medications (WebMD)