When to take: daily before hay fever season starts.
Vitamin C is also recommended, as it is known as a natural antihistamine and can be found in oranges, lemons and grapefruit. Also present are bioflavonoids, which have powerful anti-allergy effects. The combination of vitamin C and bioflavonoids provides a natural decongestant and antihistamine for sufferers and helps alleviate symptoms effectively. Oranges are a good dose of vitamin C or you can take a supplement.