Coffee

acesulfame potassium

Limited safety data; may affect insulin response; animal studies showed tumor increases.

caramel color

Ammonia-process caramel coloring; may contain 4-MEI; ultra-processed marker.

natural flavor

Vague term masking hundreds of possible compounds; may include MSG, beaver anal gland secretions, and other sources.

sucralose

May alter gut microbiome; studies show possible DNA damage at high doses.