Covonia is a brand of cough and cold remedies owned by Thornton & Ross Ltd since 1968. Covonia Cold and Flu formula, is the strongest non-prescription cold and flu formula available in the UK and contains the following active ingredients:

• Paracetamol
  Paracetamol
  Paracetamol INN , or acetaminophen USAN , is a widely used over-the-counter analgesic and antipyretic . It is commonly used for the relief of headaches and other minor aches and pains and is a major ingredient in numerous cold and flu remedies...
  
  
• Phenylephrine hydrochloride
• Guaifenesin
  Guaifenesin
  Guaifenesin INN or guaiphenesin , also glyceryl guaiacolate, is an expectorant drug sold over the counter and usually taken by mouth to assist the bringing up of phlegm from the airways in acute respiratory tract infections.-History:Similar medicines derived from the guaiac tree were in use as a...
  
  
• Cetylpyridinium chloride
  Cetylpyridinium chloride
  Cetylpyridinium chloride is a cationic quaternary ammonium compound in some types of mouthwashes, toothpastes, lozenges, throat sprays, breath sprays, and nasal sprays. It is an antiseptic that kills bacteria and other microorganisms. It has been shown to be effective in preventing dental plaque...
  
  .

The current brand mascot for Covonia is a muscular, red bull named Stan (Stan the Bull) and television ads for the brand have been voiced by Ainsley Harriott

Ainsley Harriott

Ainsley Harriott is a British celebrity chef and television presenter.-Early career:Trained at Westminster College of Catering, Ainsley obtained an apprenticeship at Verrey's restaurant in the West End and later worked as a commis chef...

since 1998.