Botox injections could be unsafe.

• Position: Side Effects - Cosmetic wrinkle treatment - Brief Article

Botox (botulinum toxin type A) has been approved by the Food and Drug Administration for removing facial wrinkles. Botulinum toxin is a purified form of one of the most potent toxins in the world, and while effective in temporarily decreasing wrinkles, it may not be as safe as its users believe. There are no studies on its long-term effects.

According to The Medical Letter on Drugs and Therapeutics, while Botox can temporarily reduce or remove frown lines, it could cause eyelid or eyebrow drooping, double vision, reduced blinking, and corneal ulceration. The most-frequently reported adverse effects in clinical studies for treatment of forehead frown lines are headache, respiratory infection, nausea, and flu-like syndrome. These effects are usually transient, but may last several months.

The local injection-site effects of Botox can include facial pain, erythema...