What is a narcotic by medical definition? By medical definition, narcotics are substances used to treat moderate to severe pain. In fact, the word ânarcoticâ is taken from the Greek word for âstuporâ. So, narcotic originally referred to substances that dull the senses and relieve pain.
The types of drugs that might be prescribed for sciatica pain include: 1  Anti-inflammatories. 2  Muscle relaxants. 3  Narcotics. Tricyclic antidepressants.  Anti-seizure medications.
Muscle Relaxants. A combination of nonsteroidal anti-inflammatory drugs and muscle relaxants -- such as cyclobenzaprine (Flexeril), diazepam (Valium), carisoprodol (Soma), or methocarbamol (Robaxin) -- are sometimes used for patients with acute low back pain.atients should understand that most people who have sudden low back pain, even with sciatica, have a high likelihood of substantial improvement over the first month. The most commonly prescribed medications for the treatment of back pain are nonsteroidal anti-inflammatory drugs (NSAIDs).