Some Lemsip products contain decongestants which work by constricting the blood vessels; this action may worsen raised blood pressure/hypertension. Therefore Lemsip, which contains decongestant, should not be taken by people with a history of raised blood pressure/hypertension. Check individual packs for any cautionary statements.
Lemsip products should be avoided by people with a history of coronary artery disease, cardiac failure, or any other heart problem. Please discuss with a doctor or pharmacist before use.