Anything toxic will have an impact on the liver as it is the organ that has to deal with the toxins in the body so it is probably the cause of your horses condition, I have never really seen it growing in fields it is taking a hold in my garden but seems to stay within the boundary hedges.
Thank you for your advice. He's not been grazed on cattle or sheep land but I had him tested anyway just to rule it out. I got his results back yesterday and everything is fine. Just struggling to find the reason why he's suddenly come down with this. Thought bindweed may of been the answer
Common or Field Bind Weed. Common bind weed is a much larger plant than its relative the field bind weed and will only be found with large white trumpet shaped flowers whereas field bind weed is a much lower ground covering plant, has smaller leaves and flowers and these may be white or shaded pink. Some websites will label these plants as ‘toxic’ and ‘not to be given to animals’. It is unclear why they take this stance as the majority will describe the many medicinal benefits of it. The position may be adopted due to the purgative aspect of common bind weed especially. However, an animal may feel that it needs to purge in this way and so choose to eat the plant anyway. This is the applied zoopharmacognosy way – offer the plant and allow the animal to choose as it may, or may not, need the plant properties available. In addition to the above characteristic both varieties may be seen as having a calming effect, act as a tonic that may balance blood sugars due to the presence of inulin (similar to insulin), anti-fungal and bacterial, a boost to the immune system when needed and it may assist in reducing some tumours of the body. The blood sugar balancing effect may be especially important to insulin resistant pre-laminitic horses as a replacement for the, now ineffective, insulin in a bid to stave off a full laminitic attack. However, to return to the original sentence it may be prudent not to offer too much to an animal, even if it continues to choose it, at first so as to avoid any unwanted purging.