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Concerns about its potential link to cancer come from its relationship to another drug: phenacetin.

"But the ingredient that was doing that was a thing called phenacetin, which gave you the buzz and got you addicted and also destroyed your kidneys."

For the headaches, phenacetin, alone or in combination with caffein and bromide of sodium, may be tried.

The power of phenacetin on a feverish patient seems to him far more astonishing.

There is no doubt that the salicylates will relieve the pain almost at once, but so will any other coal-tar product and phenacetin, acetanilid or even antipyrin may be used with good effect.