Overdose (2 April 2005 in Nottinghamshire, Great Britain – 1 July 2015 in Germany) was a Hungarian Thoroughbred racehorse.

Overdose was English-bred and was sold at Tattersalls December Yearling Sales in November 2006 for just 2,000 guineas (£2,100).

[1] His owner, Zoltán Mikóczy purchased Overdose only by chance and has been quoted as saying "I just put my hand up for fun, I like excitement of the horse auctions.

[3] In 2008 he was named Wunderpferd (wonderhorse) in Germany, for winning German sprint races – including the Group 2 Goldene Peitsche – in such a dominant style.

The Hungarian team would like to receive the official position from the organizers even before the supplementary competition is ordered, but they refuse to do so "citing various excuses".

According to the owner of Overdose, one of the reasons for this could be that the "savior of the French" got off to a bad start and "stayed in the race", while the Hungarian horse gave his all.

Among the top sprinters (all continents and years) he was ranked 4th at Timeform with a rating of 126 and 6th at IFHA with 120, despite he did not win a Group I race (at least not officially).

Overdose returned in July 2010, with two victories in Bratislava and Budapest, growing his unbeaten record to 14 races.

Although he led to 1000 meters, Overdose lost too much power when entering the startbox, therefore he was unable to keep the pace in the last furlong, and finished only seventh.

After this race the horse has suffered another, but minor injury, which resulted in the miss of the remaining of the season.

In 2011 he started the season in Berlin, Germany, with a dominating victory, and ran a new track record.

[13] After the race the officials of the Ascot Racecourse said that they had never seen a horse performing in such a high level after suffering laminitis.