For the six months ended June 30, 2021, gross sales to customers representing 10% or more of the Company’s total gross sales included two customers that represented approximately 49% and 14% of total gross sales.
Prescription Medicines sales consist of sales of Stendra® in the U.S. for the treatment of male ED. Stendra® is primarily sold directly to the four main customers as described above, which collectively accounted for approximately 94% of Stendra® net sales for the six months ended June 30, 2022. Individually, sales to the four main customers, accounted for 29%, 26%, 20%, and 19%, respectively, of Stendra® gross sales for the six months ended June 30, 2022.
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 $118,430 or 2% higher during the six months ended June 30, 2022 than in the same period in 2021 consisting of a $6,479 increase in the net sales of Stendra® and a $111,951 increase in Medical Device Sales. The increase in net sales of Stendra® was substantially due to increased wholesaler sales following the resolution of previous quarters supply constraints primarily offset by increased wholesaler returns related to the sale of short-dated product and increased distribution service fees. The increase in net sales for Medical Devices included an increase in international and domestic sales of VED systems.
Cost of Sales
Cost of sales for the six months ended June 30, 2022, were $1,121,560, composed of $489,007 of cost of sales for our Prescription Medicines segment and $632,553 for our Medical Devices segment.
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 Prescription Medicine segment for the six months ended June 30, 2022 consisted of 46% third-party product cost of sales, 50% royalty expenses, 7% 3PL order fulfillment and shipping expenses and a 3% benefit in inventory obsolescence reserves.
Cost of sales for the Medical Device segment for the six months ended June 30, 2022 consisted of 88% raw materials and 12% production labor.
Cost of sales increased by $84,880 or 8% during the six months ended June 30, 2022 compared to the same period in 2021. The increase in cost of sales coincides with the increase in revenues. For the six months ended June 30, 2022 and 2021, cost of sales as a percentage of net sales was 17% and 16%, respectively.
Gross Profit
Gross profit for the six months ended June 30, 2022 was $5,530,125, or 83% of net sales, composed of $4,367,934 of gross profit from Prescription Medicines and $1,162,191 from Medical Devices. Gross profit for the six months ended June 30, 2021 was $5,496,575, or 84% of net sales, composed of $4,288,134 of gross profit from Prescription Medicines and $1,208,441 from Medical Devices. The increase in gross profit was driven by the factors noted above.
Operating Expenses
Selling, general and administrative
Selling, general and administrative expenses for the six months ended June 30, 2022, were $7,114,342, composed of $3,440,168 of selling, general and administrative expenses of our Prescription Medicines segment, $884,538 of selling, general and administrative expenses of our Medical Devices segment and $2,789,636 of general corporate expenses.
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.