Used daily by those who can't do without fresh breath and the feeling of a clean mouth, mouthwash is a common oral hygiene product, but it hides some risks.
A study concluded that its regular use may be associated with an increased risk of hypertension regardless of the main risk factors for high blood pressure. While it helps reduce bad breath and prevent cavities, the problem lies in mouthwashes with chlorhexidine, an antiseptic ingredient that can kill nitric oxide-producing bacteria, which, in turn, can increase systolic blood pressure.
“The study analyzed the saliva of several patients and proved that the continuous use of chlorhexidine mouthwashes eliminates the normal flora bacteria that produce nitric oxide and, consequently, can cause an increase in systolic blood pressure,” reveals Ricardo Maia, dentist at Clínica Santa Madalena. “Oral bacteria responsible for nitric oxide production are important for maintaining blood pressure at adequate levels.”
Only chlorhexidine-based mouthwashes are concerned, which should not be used “by children under 8 years of age,” explains Ricardo Maia, who recommends that those with blood pressure above 140/90 “use it only twice a day and diluted.”
Chlorhexidine mouthwash has other side effects and can cause tooth stains, so if your mouthwash includes this compound, avoid drinking coffee, tea, red wine, or foods with dyes that can stain your teeth.
In addition to reminding that no mouthwash should be swallowed, Ricardo Maia recommends its use “after tooth extractions, implant placement, or gum disease.”
“If possible, it should only be used during the healing phase, as recommended by the dentist. After that period, return to mouthwash without the chlorhexidine compound.”
