Drugs used specifically to reduce or abolish pain without impairing consciousness are known as:

Drugs that are specifically designed to reduce or eliminate pain while allowing the user to remain conscious are classified as analgesics. These medications work by interfering with the pain signaling pathways in the nervous system, effectively blocking the perception of pain. This allows individuals to manage pain without the sedation or altered consciousness associated with other types of medications.

In contrast, hypnotics are substances that induce sleep or sedation and can impair consciousness, which makes them unsuitable for the purpose of pain relief while maintaining awareness. Stimulants are drugs that increase alertness and energy levels, thus having an opposite effect to what is needed for pain management. Tranquilizers, while they can reduce anxiety and induce relaxation, also affect consciousness and do not specifically target pain relief like analgesics do.

Therefore, the classification of analgesics as the appropriate choice reflects their primary function in medical treatment, emphasizing their role in pain management without compromising mental awareness.