A pharmacist has explained why a medication commonly taken for flu symptoms could be harmful to some people
A pharmacist has explained why people with a common health condition might be advised not to take decongestants. Talking to the Mirror, Pharmica’s Superintendent Pharmacist Carolina Goncalves explained: “You can take decongestants for the flu, but consider your health conditions first.
“Medications such as pseudoephedrine or phenylephrine reduce nasal swelling by narrowing blood vessels in the nasal passages, easing congestion. However, they also raise blood pressure and heart rate due to their vasoconstrictive effects, as they cause blood vessels to contract, increasing vascular resistance and forcing the heart to work harder.”
The expert continued: “If your blood pressure is within a healthy range and you have no heart-related concerns, short-term use of decongestants as directed is generally safe. However, for individuals with hypertension, heart disease or other cardiovascular risks, decongestants might not be advisable.
“The vasoconstriction caused by decongestants can elevate blood pressure and increase the workload on the heart, potentially exacerbating existing conditions or triggering complications.”
While you should talk to your GP or pharmacist before taking any new medications, you may wish to try steam inhalation or consider saline nasal sprays to help with flu symptoms.
Goncalves explained: “Saline nasal sprays or rinses are a good alternative – they work by flushing out mucus, allergens and irritants from your nasal passages, reducing swelling and keeping the tissues hydrated. This helps restore natural moisture balance without affecting blood vessels, making them safe for those with blood pressure concerns.
“Nasal corticosteroids, such as fluticasone, are another excellent option for more persistent issues. These sprays reduce inflammation in the nasal lining by inhibiting the release of inflammatory chemicals in your body, such as histamines and cytokines. This action helps relieve congestion and prevents the swelling that blocks airflow, offering long-term relief with consistent use. You can also try steam inhalation, which helps loosen thick mucus and soothe irritated nasal tissues.”
NHS data suggests that around 30% of adults in England have hypertension, also known as high blood pressure, with approximately 1 in 4 adults affected worldwide. The NHS website says, “High blood pressure is very common, especially in older adults. There are usually no symptoms, so you may not realise you have it.”
If you think you may have high blood pressure, you can get your blood pressure checked at your GP surgery or some pharmacies. However, if you get sudden pain or discomfort in your chest that does not go away, pain that spreads to your left or right arm, your neck, jaw, stomach, or back, or chest pain and you feel sweaty, sick, light-headed, or short of breath, you should call 999 immediately.