Safety, Tolerability and Pharmacokinetics Study of L608 in Healthy Adults

This is a Phase 1 safety study for a new investigational drug called L608 in healthy adult volunteers. The study is checking how the body absorbs, processes, and tolerates different doses of the drug, and identifying any side effects. **You may be eligible if...** - You are between 18 and 65 years old - You have a body mass index (BMI) between 18.5 and 32.0 and weigh at least 50 kg - You are a non-smoker or have smoked fewer than 100 cigarettes in your lifetime and have not used tobacco products for at least 3 months - If female, you are not pregnant or breastfeeding and agree to use highly effective contraception from screening until 3 months after the last dose **You may NOT be eligible if...** - You have any allergies or sensitivities to the study drug's components - You have a history of unusual or unexplained bleeding, clotting disorders, or blood-coughing episodes - You have asthma, sleep apnea, COPD, pulmonary fibrosis, bronchiectasis, or similar breathing conditions - You have a history of serious medical conditions that could interfere with the study or your safety Talk to your doctor to see if this trial is right for you.