Contrave is time released, so you should not split the tablets. You would normally find a score line on tablets that can be split, but there is none in this case.

NDC: 51267-890

"CONTRAVE should be taken by mouth in the morning and in the evening. The tablets should not be cut, chewed, or crushed. Total daily doses greater than 32 mg/360 mg per day (two tablets twice daily) are not recommended. In clinical trials, CONTRAVE was administered with meals. However, CONTRAVE should not be taken with a high-fat meal because of a resulting significant increase in bupropion and naltrexone systemic exposure"

Ref: DailyMed