Hayfever injection is a corticosteroid injection which has anti-inflammatory properties. It suppresses the immune system and stops the natural pollen response from going ‘haywire’. This is the same medication given by doctors regularly for tennis elbow, various ligament and muscular strains, osteoarthritis and other joint conditions. Know more: https://www.regentstreetclinic.co.uk/hayfever-injection-sheffield/