My wife's has severe allergies and recently began getting weekly injections to help. It's not cheap, so she opened a Health Savings Account (HSA) through her new company.
The HSA is a tax-advantaged medical savings account that allows her to pay for the shots (and other medical costs) using pretax dollars. Unlike a Flexible Spending Account, funds roll over and accumulate year over year if not spent.
She's having $50/check taken out and pays for the doctor visits using a "debit" type card. The HSA should help save us a good chunk of money on the injections.