Medical Device sales consist of domestic and international sales of men’s health products for the treatment of ED. The men’s health products do not require a prescription and include VEDs and related accessories.
Net sales were increased by $3,367,770 or 106% during the six months ended June 30, 2021 compared to the six months ended June 30, 2020 consisting of a $3,311,919 increase in the net sales of Stendra® and a $55,850 increase in Medical Device Sales. The increase in net sales of Stendra® was substantially due to higher wholesaler demand as the market began to recover from the implications of the 2019 FDA warning letter that impacted the Company's ability to promote Stendra® through the 3rd quarter of 2020 and the continued recovery from the COVID-19 pandemic in the 2nd quarter of 2021. The increase in net sales for our Medical Devices segment was attributable to the continued recovery from the COVID-19 pandemic in 2021.
Cost of Sales
Cost of sales for the six months ended June 30, 2021 were $1,036,680, composed of $562,328 of cost of sales for our Prescription Medicines segment and $474,352 for our Medical Devices segment.
Cost of sales for the six months ended June 30, 2020, were $1,323,266 composed of $777,594 of cost of sales for our Prescription Medicines segment and $545,672 for our Medical Devices segment.
Cost of sales for the Prescription Medicine segment for the six months ended June 30, 2021 consisted 43% third-party product cost of sales, 42% royalty expenses, 11% third-party logistics provider order fulfillment and shipping costs, and of 4% inventory obsolescence reserves.
Cost of sales for the Medical Device segment for the six months ended June 30, 2021, consisted of 88% raw materials, 9% production labor and 3% other cost of sales.
Cost of sales decreased by $286,586 or 22% during the six months ended June 30, 2021 compared to the same period 2020. For the six months ended June 30, 2021 and 2020, cost of sales as a percentage of net sales were 16% and 42%, respectively. The decrease in cost of sales as a percentage of net sales was a result of decreased sales order fulfillment costs (on a per unit basis) during the six months ended June 30, 2021 and decreased amortization expense due to the inventory step-up asset being fully amortized in September 2020.
Gross Profit
Gross profit for the six months ended June 30, 2021 was $5,496,575 or 84%, composed of $4,288,134 of gross profit from Prescription Medicines and $1,208,441 from Medical Devices. Gross profit for the six months ended June 30, 2020 was $1,842,219 or 58%, composed of $760,949 of gross profit from Prescription Medicines and $1,081,270 from Medical Devices. The changes in gross profit were driven by the factors noted above.
Operating Expenses
Selling, general and administrative
Selling, general and administrative expenses for the six months ended June 30, 2021 were $7,997,890, composed of $3,666,993 of selling, general and administrative expenses of our Prescription Medicines segment, $1,291,426 of selling, general and administrative expenses of our Medical Devices segment and $3,039,471 of general corporate expenses.
Selling, general and administrative expenses for the six months ended June 30, 2020, were $8,876,162, composed of $4,820,367 of selling, general and administrative expenses of our Prescription Medicines segment, $1,213,864 of selling, general and administrative expenses of our Medical Devices segment and $2,841,931 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.