How do you differentiate between a Banned Substance or Controlled Medication?

Banned Substance
♦  no legitimate use in the competition Horse and/or
♦  have a high potential for abuse
Banned Substances are prohibited at all times.

Controlled Medication Substance
Substance that is therapeutic and/or commonly used in equine medicine, considered to have:
♦  the potential to affect performance, and/or
♦  a potential welfare risk to the Horse
Controlled Medication Substances are prohibited In-Competition only.