Prescription Medicines sales consist of sales of Stendra® in the U.S. for the treatment of male ED. Stendra® was primarily sold directly to four main customers, which collectively accounted for approximately 98% of Stendra® gross sales for the three months ended September 30, 2021. Individually, sales to the four main customers accounted for 47%, 19%, 16%, and 16% of Stendra® gross sales for the three months ended September 30, 2021.
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 Vacuum Erection Devices (“VEDs and related accessories”).
Net sales were $1,319,526 or 38% lower during the three months ended September 30, 2021, then in the same period in 2020 consisting of a $1,212,860 decrease in the net sales of Stendra® and a $106,666 decrease in Medical Device Sales. The decrease in net sales of Stendra® was substantially the result of increased sales allowances to promote sales of the 50mg Stendra® due to the manufacturing delays of the 100mg Stendra®. This situation is expected to be resolved in the fourth quarter of 2021. The decrease in net sales for our Medical Devices segment was attributable to decreased demand in domestic sales and international sales of VED systems.
Cost of Sales
Cost of sales for the three months ended September 30, 2021, were $319,158, composed of $45,254 of cost of sales for our Prescription Medicines segment and $273,904 for our Medical Devices segment.
Cost of sales for the three months ended September 30, 2020, were $981,903 composed of $749,575 of cost of sales for our Prescription Medicines segment and $232,328 for our Medical Devices segment.
Cost of sales for the Prescription Medicine segment for the three months ended September 30, 2021, consisted of 152% royalty expenses, which was partially offset by a net 32% favorable adjustment to the costs of Stendra® sales and inventory obsolescence reserves and a 20% favorable adjustment to the 3PL order fulfillment and shipping expenses.
Cost of sales for the Medical Device segment for the three months September 30, 2021, consisted of 86% raw materials and 14% production labor.
Cost of sales decreased by $662,745 or 68% during the three months ended September 30, 2021, compared to the same period in 2020. For the three months ended September 30, 2021, and 2020, cost of sales as a percentage of net sales was 15% and 28%, 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 three months ended September 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 three months ended September 30, 2021, was $1,826,011 or 85%, composed of $1,332,036 of gross profit from Prescription Medicines and $493,974 from Medical Devices. Gross profit for the three months ended September 30, 2020, was $2,482,792 or 72%, composed of $1,840,576 of gross profit from Prescription Medicines and $642,216 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 three months ended September 30, 2021, were $3,413,223, composed of $1,318,610 of selling, general and administrative expenses of our Prescription Medicines segment, $722,998 of selling, general and administrative expenses of our Medical Devices segment and $1,371,615 of general corporate expenses.
Selling, general and administrative expenses for the three months ended September 30, 2020, were $3,121,023, composed of $1,837,864 of selling, general and administrative expenses of our Prescription Medicines segment, $566,666 of selling, general and administrative expenses of our Medical Devices segment and $716,493 of general corporate expenses.