Short-term potential side effects of nicotine gum include mouth irritation, a bad taste in the mouth, too much saliva, ...

But, he adds, no studies have been done on the effects of the product early in pregnancy. If you've ever felt as though you were becoming hooked on nicotine gum, you might not have been imagining it.

[49] Vasopressin is thought to have a role in ulcerogenesis through its vasoconstrictive activity, and nicotine gum is known to ... some for up to 6 months. [61] Side effects were recorded during ...