Operating Expenses
Selling, general and administrative expenses for the six months ended June 30, 2024, were $4,998,088, composed of $1,302,928 of selling, general and administrative expenses of our Prescription Medicines segment, $1,072,556 of selling, general and administrative expenses of our Medical Devices segment and $2,622,604 of general corporate expenses.
Selling, general and administrative expenses for the six months ended June 30, 2023, were $4,380,231, composed of $754,993 of selling, general and administrative expenses of our Prescription Medicines segment, $905,442 of selling, general and administrative expenses of our Medical Devices segment and $2,719,796 of general corporate expenses.
Selling, general and administrative expenses for both segments include selling, marketing and regulatory expenses. Unallocated general corporate expenses include costs that were not specific to a particular segment but are general to the group, including expenses incurred for administrative and accounting staff, general liability and other insurance, professional fees and other similar corporate expenses.
Selling, general and administrative expenses increased by $617,857 or 14% during the six months ended June 30, 2024, compared to the same period in 2023. Increased selling general and administrative expenses were primarily driven by a waiver of FY 23 PDUFA fees by the FDA resulting in a $625,101 increase in PDUFA expense and increased professional service fees of $266,108, and increased stock-based compensation expense of $23,563 partially offset by decreased insurance expenses of $145,347, decreased franchise taxes of $84,904, and decreased other operating expenses of $66,664.
Research and development
Research and development expenses for the six months ended June 30, 2024, were $1,924,750, composed of $1,924,750 for our Prescription Medicines segment and $0 for our Medical Devices segment, respectively.
Research and development expenses for the six months ended June 30, 2023, were $1,185,668, composed of $1,130,338 for our Prescription Medicines segment and $55,330 for our Medical Devices segment, respectively.
Research and development expenses for the Prescription Medicines segment for the six months ended June 30, 2024, are composed of $1,694,258 for clinical development, $204,603 for consulting fees, and $25,889 for legal fees related to the Company’s Non-Prescription / OTC Strategies related to Stendra®. Research and development expenses for the Prescription Medicines segment for the six months ended June 30, 2023, are composed of $903,225 for consulting fees related to the Company’s Non-Prescription / OTC Strategies related to Stendra®; $200,000 for upfront licensing fees and $24,620 for consulting fees related to the H100 license acquired in March 2020 and $2,493 related to the Company’s tech transfer of its manufacturing process.
Research and development expenses for the Medical Devices segment for the six months ended June 30, 2024, were $0. Research and development expenses for the Medical Devices segment for the six months ended June 30, 2023, are composed of $55,330 for license fees related to the Company’s Tissue-Specific Oxygenation Sensor Technology Strategies.
Research and development expenses increased by $739,082 or 62% during the six months ended June 30, 2024, compared to the same period in 2023. Increased research and development expenses were primarily driven by increased clinical development expenses related to the Company’s OTC strategies related to Stendra®.
Depreciation and amortization
Depreciation and amortization expenses for the six months ended June 30, 2024, were $1,435,677, composed of $1,000,610 of depreciation and amortization expenses of our Prescription Medicines segment and $435,067 of depreciation and amortization expenses of our Medical Devices segment.
Depreciation and amortization expenses for the six months ended June 30, 2023, were $1,653,590, composed of $1,150,939 of depreciation and amortization expenses of our Prescription Medicines segment and $502,651 of depreciation and amortization expenses of our Medical Devices segment.