Pink shower, a tropical plant, primarily thrives in Southeast Asia, natively flourishing in regions that include the Malay Peninsula and the islands around it. It has been introduced and cultivated in various parts of Africa, Central and South America, the Caribbean, and some areas of Asia, gaining prominence due to its ornamental value. While pink shower can adapt to different environments, it is sometimes thought to be affecting local ecosystems where it is not native, particularly in parts of North and Central America as well as India, albeit the extent of its impact is nuanced. The plant enjoys widespread cultivation due to its aesthetic appeal.

Pink shower seeds contain Castanospermine, an indolizidine alkaloid, posing severe toxicity risks to humans, cats, and dogs upon ingestion. Symptoms include severe gastrointestinal distress and potentially severe neurological effects. Immediate medical or veterinary care is crucial for any suspected ingestion. Prevent access and educate populations about these risks to ensure safety.