The main purpose of this study is to conduct blood tests to measure how much LOXO-783 is in the bloodstream and how the body handles and eliminates LOXO-783 when administered alone or in combination with cholestyramine in healthy participants. The study will also evaluate the safety and tolerability of LOXO-783 with and without cholestyramine. Participation could last up to 63 days including screening period.

Inclusion Criteria:

• Healthy status as defined by the absence of evidence of any clinically significant active or chronic disease
• Body mass index (BMI): 18.0 to 32.0 kilograms per square meter (kg/m²), inclusive

Exclusion Criteria:

• Females who are lactating or of childbearing potential
• Clinically significant history of any drug sensitivity, drug allergy, or food allergy