 [ Symptoms ] i have varicocele 3rd grade can i improve male fertility if improve male fertility if i go for varicocele microsurgery [ Disease ] while some research has shown some benefit from zinc lozenges and nasal sprays studies have been inconsistent and additional research is needed to see if in fact zinc is an effective cold remedy zinc is side effects especially when nasal sprays or gels are used may outweigh any potential benefit and the benefit may be minimal at best