When I say I’ve been getting Botox my entire adult life, I’m not exaggerating one bit—I started at the ripe, young age of 19 to help prevent wrinkles from forming, and I’ve honestly never looked back.

Botox is a brand-name injectable botulinum toxin that can be prescribed off-label for essential tremor. With off-label use, doctors prescribe a drug for a different condition than what it’s approved ...