Karvol decongestant capsules contain various volatile aromatic substances that have been used traditionally for many years as inhalations for their decongestant effect. The capsules are not taken by mouth; you snip the end off the capsule and squeeze the contents into hot water or onto a hankie and then inhale the vapour. The ingredients in Karvol decongestant capsules have mild decongestant properties and can relieve a blocked nose. They also have mild cooling effects that can soothe irritation in the lining of the nose.
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