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 ...

Botox can cause temporary redness, swelling, tenderness, or bruising at the injection site. You may get flu-like symptoms like fever, body aches, or nausea after Botox. Botox may cause headaches, ...