Possible Clues:

• Relief of sorts as drivers receiving a single supply
• Obsessive is, say, pointing up a source of relief
• As a genial drunk, feeling no pain
• Pain relief for north American with broken leg detained in the Far East
• As in a leg, a curious absence of pain
• Angel travelling in Asia to provide relief from suffering
• Effect of painkillers taken from sale again
• It's the inability to feel the pain in a couple of articles on Giles shattered at the end of era
• Lack of pain [NOT a country!]
• No pain or gain as ale is drunk