June 30, 2019

December 31, 2018

Accounts payable:

Clinical and regulatory expenses

$

252

$

83

Professional fee

807

2,157

Selling expenses

1,568

382

Manufacturing costs

2,198

—

Other vendors

487

980

Total accounts payable

5,312

3,602

Accrued interest payable, related parties

1,553

842

Accrued interest payable

2,270

2,138

Accrued expenses:

Payroll expenses

803

713

Accrued rebates

1,400

1,744

Other accrued expenses

117

83

Total accrued expenses

2,320

2,540

Total accounts payable and accrued expenses

$

11,455

$

9,122