Queen Elizabeth
Britain's Queen Elizabeth looks at the Iron Throne as Prince Philip (2nd R) greets cast member Rose Leslie (3rd R) on the set of the television series Game of Thrones, in the Titanic Quarter of Belfast, Northern Ireland, June 24, 2014. Also pictured are Game of Thrones cast members Sophie Turner (R), Kit Harington (4th L), Conleth Hill (3rd L) and Lena Headey (2nd L). REUTERS/Jonathan Porter/Pool REUTERS/Jonathan Porter/Pool

Queen Elizabeth has enough problems running a kingdom, not to mention the people around her. She certainly does not need problems with her horse this time. However, that is exactly what she is currently not pleased with. Her horse is said to test positive for morphine and there are rumours that the Queen herself knows about this.

Racing Post reported that the Queen's prized horse, Estimate was among five of the horses under the care of their respective trainers that were affected by the prohibited substance of morphine. Just 3-year-old in 2012, Estimate won the Queen's Vase race, and scored more wins in the Sagaro Stakes and Ascot Gold Cup in 2013, Washington Post reports.

"On Thursday July 17 the British Horseracing Authority announced that a number of post-race samples, obtained from recent race meetings, had been found to indicate the presence of morphine, which is a prohibited substance on race days. Five horses, under the care of various trainers, were affected," John Warren, the queen's bloodstock and racing adviser, said in a statement, reported in RacingPost.com.

"I can confirm that one of those horses was Estimate, the five year-old filly trained by Sir Michael Stoute and owned by The Queen. Initial indications are that the positive test resulted from the consumption of a contaminated feed product," Warren added.

Even though the Queen has been informed of the news, the Queen is yet to react. Her silence raised several speculations. It could be that the Queen is too busy minding the affairs of the Kingdom to pay attention to an issue regard her horse or she trusts the handler of horse, Stoute to take care of the matter. However, Celeb Dirty Laundry also claims that it is possible that the Queen herself knows about this already and is staying silent for fear of ridicule.

Celeb Dirty Laundry claimed that "she did display a rare show of emotion when the horse won the Ascot cup, so maybe it was on her orders that Stoute hopped the horse up on drugs." If this is true, the Queen may face more than just ridicule.

Morphine is banned among horses. "It numbs pain and could give one horse an edge over another," HRA spokesman Owen Byrne shared back in 2013.

This is not the first time that horses have been tested positive for morphine either.

"Since 2002, 45 racehorses in the UK and nine in Ireland have returned positive dope tests for morphine, which have been linked to feed from two manufacturers - Dodson and Horrell and Connolly's Red Mills," Horse and Hound's Charlotte White reported.

"There is no firm evidence of where the morphine has come from, but the British Equestrian Trade Association (BETA) and feed manufacturers believe it to be a residue from poppies grown for medical use tainting feed processed on the same premises," White continued.