Xantinol nicotinate (or xanthinol niacinate) is a vasodilator. It is a combination of xanthinol and niacin (nicotinic acid).
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Xipamide is a sulfonamide diuretic drug marketed by Eli Lilly. It is used for the treatment of oedema and hypertension.
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Xylometazoline is a direct-acting sympathomimetic which has a vasoconstrictor effect by reducing swelling and congestion when applied to mucous membranes.