Vicks Sinex Decongestant Capsules have been formulated to provide effective reflief from the symptoms of colds & flu, including aches, pains & feverishness, headache, nasal congestion & sinus pain. As an alternative, doctors can also prescribe medication that can assist with flu. Please visit our Online Doctor service to proceed with an influenza consultation. Our UK registered GP will review your details & if appropriate can provide a prescription for the main treatments for influenza.