Which of the following drug products is a controlled substance?

Lyrica, which is the brand name for pregabalin, is classified as a controlled substance due to its potential for abuse and dependence. It is primarily used for the treatment of neuropathic pain, epilepsy, and fibromyalgia. The classification as a controlled substance means that its manufacture, distribution, and use are regulated by law to ensure safety and limit abuse.

In contrast, ibuprofen, omeprazole, and amoxicillin are not classified as controlled substances. Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) commonly used for pain and inflammation. Omeprazole is a proton pump inhibitor used to treat gastroesophageal reflux disease (GERD) and other related conditions. Amoxicillin is a penicillin-type antibiotic used for treating bacterial infections. These medications do not have the same potential for abuse as controlled substances, which is why they are not regulated in the same manner.