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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Cash flows from operating activities: |  |
Net income (loss) | $ (515,043) | $ 37,382
Adjustments to reconcile net income to net cash used in operating activities |  |
Depreciation and amortization | 26,882 | 42,076
Interest expense on convertible debt | 22,585 | 60,608
Loss on disposal of asset | 13,581 | 0
Bad debt expense | 0 | 12,558
Recognition of vesting stock option expense | 0 | 10,967
Changes in assets and liabilities: |  |
(Increase) decrease in accounts receivable | (259,342) | (312,645)
(Increase) decrease in inventory | 70,729 | 216,846
(Increase) decrease in prepaid - related parties | (144,587) | 0
(Increase) decrease in prepaid and other assets | (758,132) | (38,086)
Increase (decrease) in accounts payable | (217,299) | 3,081
Increase (decrease) in accounts payable related parties | 55,243 | (60,000)
Increase (decrease) in accrued royalties and expenses | 166,379 | (180,220)
Increase (decrease) in accrued liabilities | 299,440 | 209,522
Net cash flows provided by (used in) operating activities | (1,239,564) | 2,089
Cash flows from investing activities: |  |
Purchase of property and equipment | (25,606) | (5,749)
Cash received in reverse acquisition | 508,973 | 0
Repurchase and cancellation of fractional shares | (1,061) | 0
Net cash flows from (used in) investing activities | 482,306 | (5,749)
Cash flows from financing activities: |  |
Draw on line of credit | 1,000,000 | 0
Net cash flows used in financing activities | 1,000,000 | 0
Net increase (decrease) in cash | 242,742 | (3,660)
Cash and cash equivalents, beginning of period | 176,421 | 463,189
Cash and cash equivalents, end of period | 419,163 | 459,529
Cash paid during the period for: |  |
Interest | 7,465 | 0
Income Taxes | 0 | 0
Supplemental non-cash investing and financing activities: |  |
Common stock issued for dividends on Series C Preferred Stock | 0 | 15,007
Common stock issued for conversion of Series C Preferred Stock | 0 | 85,561
Common stock issued for conversion of Related Party debt and interest | 0 | 1,585,594
Common stock issued in reverse capitalization; less cash received of $508,973 | $ 1,666,537 | $ 0

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