Decaffeinated coffee is not necessarily caffeine-free. The US Food and Drug Administration describes a typical eight-fluid-ounce decaf coffee as containing approximately two to fifteen milligrams of caffeine. That range is a practical reference, not a laboratory result for every bean or café drink.
About Coffee's source correctly emphasizes that coffee type, serving size and preparation can change the amount. A large serving or several decaf drinks therefore should not automatically be counted as zero. Likewise, a statement about how much caffeine a process removes does not tell you the exact milligrams remaining in a finished cup without knowing the starting coffee and recipe.
Decaf can be useful when you want coffee flavor with much less stimulant exposure. If you need a strict caffeine limit, use the supplier's specific information where available and discuss the relevant tolerance with your healthcare professional. The process name alone is not a complete answer to caffeine content. Choosing decaf is a personal preference or exposure-management decision, not evidence that regular coffee is unsuitable for everyone.
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