Feeding comfrey to rabbits is a controversial topic within the rabbit-keeping community. While comfrey has been traditionally used as a medicinal herb for humans and animals, there are concerns about its safety for rabbits due to potential toxicity.

Comfrey contains compounds called pyrrolizidine alkaloids (PAs), which can be harmful to the liver when consumed in large amounts or over a long period. These alkaloids can accumulate in the body and cause liver damage. Therefore, many experts advise against feeding comfrey to rabbits as a regular part of their diet.

It's important to note that there are different varieties of comfrey, and some may have lower levels of PAs than others. However, due to the potential risks, it is generally recommended to avoid feeding comfrey to rabbits.

If you are considering using comfrey for medicinal purposes or as a supplement, it is best to consult with a veterinarian who has experience with rabbits or a rabbit nutritionist. They can provide guidance specific to your rabbit's health and needs and recommend safer alternatives for promoting their well-being.