<p>Benzydamine Hydrochloride mouthwash can cause side effects, although not everybody gets them. Side effects are generally minor.</p>

<ul>
	<li>Severe allergic reaction which may include a red and lumpy skin rash, difficulty breathing, swelling of face, mouth, lips or eyelids, unexplained high temperature (fever) and feeling faint. If the swelling affects throat and makes breathing difficult and swallowing difficult, patients should be hospitalized</li>
	<li>Itchy rash, sometimes with pale, raised areas of skin with red edges (urticaria).</li>
	<li>A feeling of numbness in mouth.</li>
	<li>A stinging feeling in mouth- the mouthwash may be diluted with water if you experience stinging. This should help to reduce the stinging effect.</li>
</ul>