HSA-eligible expenses may include deductibles, copayments, coinsurance, vision and dental care, and other out-of-pocket medical costs. And the range of services that qualify is broad: You can use your HSA to pay for acupuncture, chiropractor services, or even traditional Chinese medicine (the services you can use it for are outlined in IRS Publication 502).
From 2011 through 2019, individuals were not able to use tax-advantaged money from an HSA for over-the-counter drugs that were not prescribed by a doctor. But that changed in 2020 due to the CARES Act, which also changed the rules to allow HSA funds to be used to purchase menstrual products.