6.	Inventory

The Company states raw materials, work-in-process and finished goods inventories at the lower of cost (which approximates actual cost on a first-in, first-out cost method) or market value. In evaluating whether inventory is stated at the lower of cost or market, management considers such factors as the amount of inventory on hand and in the distribution channel, estimated time required to sell such inventory, remaining shelf life, and current and expected market conditions, including levels of competition, including generic competition. The Company measures inventory adjustments as the difference between the cost of the inventory and estimated market value based upon assumptions about future demand and charged to the provision for inventory, which is a component of cost of sales. At the point of the loss recognition, the Company establishes a new, lower-cost basis for that inventory, and any subsequent improvements in facts and circumstances do not result in the restoration or increase in that newly established cost basis.

The Company expenses pre-approval inventory unless the Company believes it is probable that the inventory will be saleable. The Company capitalizes inventory costs associated with marketed products and certain products prior to regulatory approval and product launch, based on management’s judgment of probable future commercial use and net realizable value. Capitalization of this inventory does not begin until the product candidate is considered to have a high probability of regulatory approval, which is generally after the Company has analyzed Phase 3 data or filed an NDA. If the Company is aware of any specific risks or contingencies that are likely to impact the expected regulatory approval process or if there are any specific issues identified during the research process relating to safety, efficacy, manufacturing, marketing or labeling of the product candidate, the Company does not capitalize the related inventory. Once the Company capitalizes inventory for a product candidate that is not yet approved, the Company monitors, on a quarterly basis, the status of this candidate within the regulatory approval process. The Company could be required to expense previously capitalized costs related to pre-approval inventory upon a change in its judgment of future commercial use and net realizable value, due to a denial or delay of approval by regulatory bodies, a delay in the timeline for commercialization or other potential factors. On a quarterly basis, the Company evaluates all inventory, including inventory capitalized for which regulatory approval has not yet been obtained, to determine if any lower of cost or market adjustment is required. As it relates to pre-approval inventory, the Company considers several factors including expected timing of FDA approval, projected sales volume and estimated selling price. At March 31, 2013 and December 31, 2012, there were no amounts included in inventory related to pre-approval inventory.

Inventory at March 31, 2013 consisted of $60.0 million of raw materials, $11.9 million of work-in-process, and $36.8 million of finished goods. Inventory at December 31, 2012 consisted of $42.9 million of raw materials, $14.8 million of work-in-process, and $32.8 million of finished goods.