Modifiers matching alkaloid:

• basic,
• important,
• addictive,
• poisonous,
• harmful,
• potent,
• natural,
• hydrophobic,
• stimulating,
• psychoactive,
• active,
• simple,
• anticholinergic,
• soluble,
• toxic,
• bitter,

Simple categories matching psychoactive:

• herb,
• substance,
• pharmaceutical,
• drug,
• alkaloid,
• medicine,
• benzodiazepine,
• compound,
• intoxicant,
• agent,
• medication,
• chemical,
• effect,
• food,
• plant,
• cactus,
• peptide,
• constituent,
• amine,
• ligand,
• property,
• stimulant,