How long can loss of taste last after COVID-19?

Loss of taste after COVID-19 often improves within days or weeks, but it can last for months in some people. Recovery may be gradual, with flavours returning unevenly rather than all at once. A lingering change does not by itself show that the infection is still active.

COVID-19 can affect the smell system, and this can make food seem bland because smell contributes strongly to flavour. Some people notice a reduced taste, while others experience altered or unpleasant flavours as the senses recover. A blocked or runny nose, dry mouth, medicines, or another infection can also affect taste. Persistent loss of taste may occur as part of Long COVID, especially when other ongoing symptoms are present.

Keep eating and drinking regularly, choosing foods with different textures and temperatures if flavour is reduced. Good oral care and enough fluids may help if your mouth feels dry. Do not add excessive salt or sugar to compensate. Check food dates carefully because smell and taste may no longer warn you that food has spoiled. If smell is also reduced, ask a clinician whether smell training is suitable for you; avoid putting irritants inside the nose.

Arrange a medical review if your taste has not started to return after several weeks, is worsening, or is affecting eating, drinking, weight, or enjoyment of food. Seek prompt advice for new neurological symptoms, severe headache, facial weakness, or trouble swallowing. Get urgent help for breathing difficulty, chest pain, confusion, or severe dehydration. A clinician can review your COVID-19 history, medicines, nose and mouth symptoms, and whether another cause should be checked.

You could ask: Could my medicines, nasal symptoms, dry mouth, or oral health be contributing? Is smell training appropriate for me? Do my other symptoms suggest Long COVID or another condition? What changes in eating, hydration, or weight should prompt another review?