How Long Do Botox Side Effects Last?

If your side effects have lingered this long, it is unlikely to be due to Botox. Regardless, you should have your symptoms of fatigue and nausea evaluated by your primary care doctor for all causes.

Systemic symptoms (nausea, malaise, muscles aches and headache) occur uncommonly after botox or dysport and generally are gone after several hours to several days. Any symptoms that persist longer than this should be reported to your injection physician and to the manufacturer (Allergan for Botox and Medicis for Dysport). Persistent symptoms may be from other, more serious underlying diseases and patients with post botox injection symptoms lasting more than a few hours should be investigated by an internist, rhuematologist or neurologist (some one knowledegable on the botox side effects).