Is comfrey (Symphytum species) honey toxic to people?

Someone submitted a question regarding the toxicity of honey from nectar gathered from the herb, comfrey, (Symphytum species) as there is some evidence it can be a toxic plant if ingested. Here is a note from Wikipedia regarding the properties of this plant. Unlikely the honey is at all a issue. Read closely—the common names of plants do not always distinguish between different species, so the issues are not all equal.

In modern herbalism, comfrey is most commonly used topically. Some experts say that comfrey should be restricted to topical use, and should never be ingested, as it contains dangerous amounts of hepatotoxic pyrrolizidine alkaloids (PAs).[18][19] Studies associating comfrey with veno-occlusive disease (VOD), do not differentiate between Russian and common comfrey, plants with very different levels of PAs. VOD can in turn lead to liver failure, and comfrey has been implicated in at least one death, though the type of comfrey being consumed, and other dietary, physiological and pharmacodynamic factors were not accounted for.[20] In 2001, the United States Food and Drug Administration issued a ban of comfrey products marketed for internal use, and a warning label for those intended for external use.[21][22] In addition to restrictions on oral use, some experts recommend applying comfrey extracts no longer than 10 days in a row, and no more than 4–6 weeks a year.[16][23]