The one agonizing aspect of the Belmont is the mystery surrounding Big Brown's performance. We've heard many theories, and that is what they will remain. No one will ever know for sure why a horse that personified perfection suddenly came apart at the seams. Was it the deep track, the stifling heat, getting rank early in the race, the traffic and bumping going into the first turn, acting up in the holding barn, missing four days of training, possibly being dehydrated, sweating between his legs and not much on his body, breaking awkwardly, possibly getting spooked by the starter in a blue jacket and white pants standing right on the racetrack,? It likely was a combination of occurrences that led to his shocking performance. 
I’m pretty sure Tramadol would fall under category 2, which states: According to the new regulation, travellers to Thailand under medical treatment are allowed to carry
medications containing narcotic drugs of Category 2 for personal treatment in a quantity not exceeding 30 days of prescribed usage and must follow the applicable regulations strictly.
Travellers to Thailand under treatment of these medications are required to obtain a permit (Form IC-2) issued by the Food and Drug Administration before travelling
Laws and Penalties: Concerns over growing illegal AAS abuse by teenagers, and many of the just discussed long-term effects, led Congress in 1991 to place the whole AAS class of drugs into Schedule III of the Controlled Substances Act (CSA). Under this legislation, AAS are defined as any drug or hormonal substance, chemically and pharmacologically related to T (other than estrogens, progestins, and corticosteroids) that promotes muscle growth. The possession or sale of AAS without a valid prescription is illegal. Since 1991, simple possession of illegally obtained AAS carry a maximum penalty of one year in prison and a minimum $1,000 fine if this is an individual’s first drug offense. The maximum penalty for trafficking (selling or possessing enough to be suspected of selling) is five years in prison and a fine of $250,000 if this is the individual’s first felony drug offense. If this is the second felony drug offense, the maximum period of imprisonment and the maximum fine both double. While the above listed penalties are for federal offenses, individual states have also implemented fines and penalties for illegal use of AAS. State executive offices have also recognized the seriousness of AAS abuse and other drugs of abuse in schools. For example, the State of Virginia enacted a law that will allow student drug testing as a legitimate school drug prevention program (48, 49).