During the 8th Twydil Equine Veterinary Clinics an important information regarding Cobalt dosage came out... The Twydil Company presented a conference with the title: "Overdosage of Cobalt will be considered as Doping and Abuse".  Twydil wants to inform in advance the sporthorses community that a Cobalt overdose is possible with feedsupplements and injections. B12 Vitamin is here concerned. This conference will give some ideas to think about.....