Comfrey is generally not recommended for feeding to rabbits, including lactating ones, due to potential health risks. While comfrey has a reputation for its healing properties and has been used in traditional herbal medicine, it contains certain compounds called pyrrolizidine alkaloids (PAs). These PAs can be toxic to the liver and may cause liver damage or other health issues if consumed in large amounts or over a prolonged period.

Given the potential risks associated with comfrey, it is advisable to avoid feeding comfrey to rabbits, including lactating ones, as a precautionary measure. Instead, focus on providing a balanced diet that includes high-quality hay, fresh vegetables, and a limited amount of commercial rabbit pellets. These foods provide the necessary nutrients for lactation and support the health of the rabbits and their kits.

If you have any concerns about suitable foods for your lactating rabbits or questions about their diet, it's best to consult with a veterinarian experienced in rabbit care. They can provide specific guidance and recommendations tailored to your rabbits' needs to ensure they receive a safe and appropriate diet during this important stage.