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Since Tri-Solfen® was commercially launched, over 150 million lambs have been treated and over 80% of Australian wool growers are now using Tri-Solfen for their sheep. Here’s what some of them have to say…

‘We have used pain relief for two years now and seen real production gains. We are concerned for the welfare of our animals and will continue to use pain relief to ensure they get the best care.’

Clinton Wise– Wililoo Merino Stud, Woodanilling, W.A.

'It easy to see the difference pain relief makes. Before, lambs would walk away hunched up, even taking a couple of hours to walk back to the paddock. Now they run straight back to Mum and start suckling,” says Rod. “My wool is now sold under the Better Choices brand. I see this as a definite advantage. I think it will be an advantage in the long run, to both me and the industry as a whole.'

Rod Miller– Glenpaen Merino Stud, Horsham, Vic

'After being treated with pain relief my lambs were more content and less stressed. As farmers we are sincere in looking after the welfare of our animals and using pain relief demonstrates this.'

Richard Coole– Frankland, W.A.

'We have been using pain relief for the past three years. We’re impressed by reduced bleeding in the mulesing wound immediately after application. Lambs run straight back to find the ewe, which has dramatically reduced our mortality rates. Flock management, post lamb marking is easier due to the effect of pain relief and the scab healing faster.'

Ryan & Malcom O’Dea– Peepingee Merino Stud, Narrogin, W.A.

'Using pain relief eases the stress and allows lambs to mother up and move back to the paddock easier with faster weight gains.'

Kent Lummis– Waverley Downs, Gilgandra, NSW


Patent Portfolio

Country Species Patent
Australia Sheep Granted
Australia Horses, Dogs, Lab animals Granted
Australia Cattle Granted
Australia Humans Granted
Horses, Dogs, Lab animals Granted
EU Humans Granted
EU Pig, Sheep,
USA Dogs, Horses, Lab animals Granted
USA Humans Granted
USA Pig, Sheep,
Canada Horses, Dogs, Lab animals Granted
Canada Cattle,
Canada Humans Granted


Advisory Board

Ian Page

Non-Executive Director

Ian is Chief Executive Officer of Dechra Pharmaceuticals, which has a 33% shareholder in Medical Ethics. He joined National Veterinary Services, Dechra’s former services business in 1989 and joined the Board of Dechra in 1997. In October 2010, Ian was appointed as Non-Executive Chairman of Sanford DeLand Asset Management.

Dr Chris Roberts

Human Wound and Regulatory Advisor

Chris has over 20 years’ line management experience of heading clinical research teams. He was previously global head of Smith & Nephew clinical support and market development, where he managed global clinical Phase II and III programmes in the management of venous and pressure ulcers.

Lieutenant Colonel Professor Steven Jeffery

Medical Specialist Advisor

Steve has over 15 years’ experience in military plastic surgery. In 2011 he was awarded the Military Civilian Partnership Award for ‘Regular of the Year’, as well as receiving the Wounds UK ‘Key Contribution’ award and the Smith and Nephew ‘Customer Pioneer of the Year’ award. He has also been awarded Fellowship of the Royal College of Surgeons of England ad eundum. He is an expert adviser to NICE Medical Technologies Evaluation Programme. Steve co-founded the Woundcare 4 Heroes charity, which is already making a big difference to the wound care of both serving and veteran personnel.

Dr Matthew Bayfield

Medical Specialist Scientific Director

Dr Matthew Bayfield, Head of Cardiothoracic Surgery, Strathfield Private Hospital and VMO Cardiothoracic Surgeon, Royal Prince Alfred Hospital.

Professor Peter Windsor

Veterinarian Research Advisor

Peter is a registered specialist veterinary surgeon in New South Wales and an emeritus Professor at Sydney University. He holds a BVSc (Hons), PhD, DVSc and diploma from the European College of Small Ruminant Health Management.

Dr Julian Braidwood

Global Regulatory Affairs Advisor

Julian has held leadership roles and managed international clinical projects with Grampian. He was previously Regulatory Affairs Manager at Novartis Animal Health. He is the Founder and Managing Director of Triveritas, where he is responsible for a team of 40 animal health specialists across the EU and the US.


Scientific publications and references

Medical Ethics has had over 15 peer reviewed studies confirming the safety and efficacy of our science in several species published in international science journals. Some of these and other reference material can be read in this section.

Foot and Mouth Disease in Cameroon: A Systematic Review to Support its Progressive Control

Foot-and-mouth disease (FMD) is an infectious viral transboundary disease of even-toed animals, caused by the foot-and-mouth disease virus (FMDV). The objective of this paper is to provide reviewed data on the epidemiology, risks, control and the existing gaps on FMD in Cameroon from 1990 to 2021 to support its progressive control. Relevant and available documents (n = 45) on FMD in Cameroon such as peer-reviewed papers (n = 27), dissertations (n = 11), conferences (n = 5) and technical reports (n = 2) were used. Studies on the molecular and serological epidemiology, the role of carrier/mobile animals, the evaluation of immune-cross protection between serotypes and the quantification of serotype-specific transmission parameters using mathematical models have been discussed. The environmental drivers of FMD in cattle markets, abattoir and herd-level, as well as risk factors such as husbandry practices, communal grazing, regional/international livestock trading system, transhumance and fomites, are presented. As international borders remain porous with poor FMD monitoring infrastructure at veterinary checkpoints in a country with no candidate vaccine, vaccination program and commercial vaccines available, farmers are left with no option other than to manage the disease with traditional formulations and veterinary pharmaceuticals mostly antibiotics. Tri-Solfen® (TS), a wound dressing formulation was efficient in managing FMD in Cameroon. The current gaps in FMD knowledge in Cameroon are presented. There is a need for a comprehensive epidemiological study in the major cattle rearing regions of Cameroon. A regional study to identify all the risk factors for the transmission of FMD is required. A socioeconomic impact study of FMD is required in Cameroon.


Managing Welfare and Antimicrobial-Resistance Issues in Treating Foot-and-Mouth Disease Lesions: A New Therapeutic Approach

Peter Windsor, Syseng Khounsy, Francesca Earp, Isabel MacPhillamy, James Young, Russell Bush


Improving the welfare of calves through the use of a topical anaesthesia

Sabrina Lomax, Professor Peter Windsor, Dr Meredith Sheil


UFAW Animal Welfare Conference

Recent advances inanimal welfare science V


Topical anaesthesia reduces sensitivity of castration wounds in neonatal piglets

Sabrina Lomax, Charissa Harris, Peter A. Windsor, Peter J. White


Proceedings of the 44th Congress of the International Society for Applied Ethology (ISAE)

Lomax, Sabrina, Windsor, Peter and Sheil, Meredith, University of Sydney, Veterinary Science-Farm Animal Health, C02- Camden Buildings, University of Sydney, NSW 2006, Australia


The welfare revolution of topical anaesthesia on wool sheep farms in Australia: is there a place for Xylazine &/ or NSAID’s

Peter Windsor, Crystal Espinoza, Sabrina Lomax, Faculty of Veterinary Science, University of Sydney, Camden


Proceedings of the 44th Congress of the International Society for Applied Ethology (ISAE)

Swedish University of Agricultural Sciences, Uppsala, Sweden, 4-7 August 2010


Quantitative Sensory Testing for assessing wound pain in livestock

Sabrina Lomax, Crystal Espinoza, Meredith Sheil and Peter Windsor


Effect of Topically Applied Anaesthetic Formulation on the Sensitivity of Scoop Dehorning Wounds in Calves

Dominique McCarthy*,Peter Andrew Windsor, Charissa Harris, Sabrina Lomax, Peter, John White


A new approach to pain management at lamb and calf marking in Australia

Sabrina Lomax, Crystal Espinoza, Meredith Sheil and Peter Windsor


Pain Relief Spray for Lambs

Interview with Dr Meredith Sheil. Radio Australia 2


Topical anesthesia mitigates the pain of castration in beef calves.

S. Lomax and P. A. Windsor. J ANIM SCI 2013, 91:4945-4952