Bofors toothpaste

1968-1971

Nothing fosters confidence in dental care like a brand specializing in weapons. In the 1960s, the Swedish weapons manufacturer Bofors tried to branch out and start making “peace products.” Bofors toothpaste contained artificial sweeteners and micro-plastic beads as a mild abrasive. By 1971, unfounded rumors spread alleging the beads would remain in the body for months with catastrophic results. The weapon manufacturer’s assurances that the toothpaste was safe did not help. The peaceful paste took a bullet and was carried off the field in late ’71. 

Additional info:
Wikipedia

This is what Bofors is better known for than toothpaste: