This is a randomized, double-blind, placebo-controlled, single ascending dose trial in healthy subjects, randomized to ZP7570 or placebo within each cohort.

Sixty-four subjects are planned to be studied in eight cohorts in this first-in human trial. Eight subjects will be allocated to the to eight dose levels. The entire observation period comprise 28 days starting with a 96 hours in-house stay, where discharge is planned for Day 5, followed by five outpatient visits and an End of Trial Visit at Day 28. A blinded evaluation of each cohort will be performed by a Trial Safety Group to determine whether the trial will progress to the next dose level based on the stopping rules specified in protocol.

Inclusion Criteria:

• Healthy male or female subject aged between 18 and 55 years, both inclusive.
• Body Mass Index (BMI) between 18.5 and 28.0 kg/m^2, both inclusive
• Body weight of at least 60 kg.
• Heart rate after 5 minutes rest in supine position inside the range of 50-90 beats/min at screening

Exclusion Criteria:

• Any history of a disorder which in the investigator's opinion might jeopardize subjects safety, evaluation of results or compliance with the protocol.
• History of gallbladder disease or cholecystectomy.
• History of major depressive disorder or a Patient Health Questionnaire (PHQ-9) > 9 completed at screening, or a history of other severe psychiatric disorders (e.g. schizophrenia or bipolar disorder).
• Any suicidal ideation of type 4 or 5 on the Columbia-Suicide Severity Rating Scale (C-SSRS) within 6 months prior to screening.
• Clinically significant abnormal standard 12-lead ECG after 5 min resting in supine position at screening, including a QTcF > 450 ms (males) or QTcF > 470 ms (females), PR ≥ 220 ms and QRS ≥ 110 ms as evaluated by the investigator.
• History of severe hypersensitivity to medicines or foods or history of severe medicinal/food induced anaphylactic reaction or contraindication to the use of Indocyanine Green (e.g. hypersensitivity to iodine).
• Any clinically significant abnormal hematology, biochemistry, or urinalysis screening tests, as judged by the investigator.
• TSH values outside of normal reference ranges of safety laboratory
• Estimated glomerular filtration rate (eGFR) < 90 ml/min/1.73 m2, as defined by Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI).
• Known or suspected hypersensitivity to IMP(s) or related products.
• Systolic blood pressure < 90 mmHg or >139 mmHg and/or diastolic blood pressure < 50 mmHg or > 89 mmHg (one repeat test will be acceptable in case of suspected white-coat hypertension).
• Symptoms of arterial hypotension
• Women of childbearing potential who are not using a highly effective contraceptive method
• Men with non-pregnant partner(s) of childbearing potential not willing to use male contraception (condom) in addition to a highly effective contraceptive method until 28 days after dosing
• Men with pregnant partner not willing to use male contraception (condom) until 28 days after dosing, in order to avoid exposure of the embryo/fetus to seminal fluid