Breastfeeding supplies such as breast pumps and related accessories are generally considered eligible expenses under IRS guidelines for Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA). According to IRS Publication 502, the cost of breast pumps and supplies that assist lactation are considered deductible medical expenses. Other items, such as additional bottles or accessories unrelated to lactation, may not qualify. Please consult your FSA/HSA administrator or healthcare provider to confirm eligibility, as requirements may vary by plan.