Final answer:
The strongest analgesia is achieved by drugs that stimulate the mu (μ) receptors, which are one of the main targets for opioid analgesics.
Step-by-step explanation:
The strongest analgesia is typically achieved by drugs that stimulate the mu (μ) receptors. These receptors are one of the principal types of opioid receptors in the body, which when activated can lead to powerful pain relief. Analgesic drugs that target the mu receptors are known to reduce pain without loss of consciousness, while at higher doses, they may also have narcotic effects, inducing drowsiness and loss of consciousness.