| Eligibility |
Inclusion Criteria:
1. Healthy Thai male or female subjects between the ages of 18 - 55 years
2. Body mass index between 18.5 - 30.0 kg/m2
3. Normal laboratory values, including vital signs and physical examination, for all
parameters in clinical laboratory tests at screening. Any abnormalities from the
normal or reference range will be carefully considered clinically relevant by the
physician as individual cases, documented in study files prior to enrolling the
subject in this study.
4. Non-pregnant woman (negative pregnancy test) and not currently breast feeding
5. Female subjects abstain from either hormonal method of contraception (including oral
or transdermal contraceptives, injectable progesterone, progestin subdermal implants,
progesterone-releasing Intrauterine Device (IUDs), postcoital contraceptive methods)
or hormone replacement therapy for at least 28 days prior to check-in in Period 1.
Injectable contraceptives e.g. Depo-Provera® will be discontinued at least 6 months
prior to check-in in Period 1. Subjects agree to use acceptable non-hormonal
contraceptive methods such as condom, diaphragm, foams, jellies, or abstinence for at
least 14 days prior to check-in in Period 1 until 7 days after the end of study in
Period 4. Female subjects of non-childbearing potential must meet at least one of the
following criteria prior to check-in in Period 1: Postmenopausal for at least 1 year
or surgically sterile (bilateral tubal ligation, bilateral oophorectomy or
hysterectomy) at least 6 months.
6. Male subjects who are willing or able to use effective contraceptive e.g. condom or
abstinence after check-in in Period 1 until 7 days after the end of study in Period 4.
7. Have voluntarily given written informed consent (signed and dated) by the subject
prior to participating in this study
Exclusion Criteria:
1. History of allergic reaction or hypersensitivity to simvastatin or to any excipients
of tablet
2. History or evidence of clinically significant renal, hepatic, gastrointestinal,
hematological (e.g. anemia), endocrine (e.g. hyper-/hypothyroid, diabetes), pulmonary
or respiratory (e.g. asthma), cardiovascular (e.g. hyper-/hypotension), psychiatric
(e.g. depression), neurologic (e.g. convulsant), allergic disease (including drug
allergies, but excluding untreated, asymptomatic, seasonal allergies at time of
dosing) or any significant ongoing chronic medical illness
3. History or evidence of muscular disease e.g. muscle pain, tenderness, weakness,
myopathy or rhabdomyolysis
4. Have high risk for coronavirus infection based on risk assessment questionnaire or
diagnosed as confirmed case of coronavirus disease starting in 2019 (COVID-19)
5. History about administration of COVID-19 vaccine within 30 days prior to check-in in
each Period
6. History of problems with swallowing tablet or capsule
7. History or evidence of galactose intolerance, the Lapp lactase deficiency or
glucose-galactose malabsorption
8. History of sensitivity to heparin or heparin-induced thrombocytopenia
9. Any condition possibly affecting drug absorption e.g. gastrectomy, enterectomy,
gastritis or duodenal or gastric ulceration other than appendectomy
10. History of diarrhea or vomiting within 24 hours prior to check-in in each period
11. 12-lead ECG demonstrating corrected QT interval (QTc) >450 msec, a QRS Complex (QRS
interval) >120 msec or with an abnormality considered clinically significant at
screening. If QTc exceeds 450 msec, or QRS exceeds 120 msec, the ECG will be repeated
two more times and the average of the three QTc or QRS values will be used to
determine the subject's eligibility.
12. Investigation with blood sample shows positive test for HBsAg.
13. History or evidence of drug addict or investigation with urine sample shows a positive
test for drug of abuse (morphine, marijuana or methamphetamine)
14. History or evidence of liver disease or renal impairment
15. Creatine kinase (CK) levels > 1.5 times of upper normal limit of reference range
(unless explained by exercise) at screening laboratory test.
16. Have epidermal growth factor receptor(eGFR) (CKD-EPI) <30 mL/min/1.73 m2 based on
serum creatinine results, at the screening laboratory test or during enrollment
17. Abnormal liver function, =1.5 times of upper normal limit of reference range for
Alanine Transaminase (ALT), Aspartate transaminase (AST) or bilirubin levels at
screening laboratory test
18. History or evidence of habitual use of tobacco or nicotine containing products and
cannot abstain for at least 48 hours prior to check-in in Period 1 and continued for
entire duration of the study
19. History or evidence of alcoholism or harmful use of alcohol (less than 2 years) i.e.,
alcohol consumption of more than 14 standard drinks per week for men and 7 standard
drinks per week for women (A standard drink is defined as 360 mL of beer or 150 mL of
wine or 45 mL of 40% distilled spirits, such as rum, whisky, brandy etc.)
20. History or evidence of alcohol consumption or alcohol-containing products and cannot
abstain for at least 48 hours prior to check-in in Period 1 and continued for entire
duration of the study or alcohol breath test shows positive result. In case of alcohol
breath test result represents the alcohol concentration range of 1 - 10 mg% Blood
alcohol concentration (BAC) and the physician carefully considers that the value came
from other reasons, not from the alcohol drinking behavior of subjects, the test will
be repeated two times separately, not more than 10 minutes. The result of the last
time should be used for subject's eligibility which must be 0 mg%BAC.
21. History or evidence of habitual consume of tea, coffee, xanthine or caffeine
containing products and cannot abstain for at least 48 hours prior to check-in in
Period 1 and continued for entire duration of the study
22. History or evidence of strenuous exercise and cannot abstain for at least 48 hours
prior to check-in in Period 1 and continued for entire duration of the study.
23. Consume or drink juice of grapefruit or orange or pomelo or its supplement/containing
products and cannot abstain for at least 7 days prior to check-in in Period 1 and
continued for entire duration of the study
24. Use of prescription or nonprescription drugs (e.g. paracetamol, potent CYP3A4
inhibitors (e.g. itraconazole, ketoconazole, erythromycin, clarithromycin), HIV
protease inhibitors (e.g. nelfinavir), cyclosporine, statins, fibrates, gemfibrozil,
daptomycin, niacin, fusidic acid etc.), herbal medications or supplements (e.g. St.
John's wort), vitamins or mineral (e.g. iron) or dietary supplements within 14 days
prior to check-in in Period 1 and continued for entire duration of the study
25. Participated in other clinical trials within 90 days prior to check-in in Period 1
(except for the subjects who drop out or withdrawn from the previous study prior to
Period 1 dosing) or still participates in the clinical trial or participates in other
clinical trials during enrollment in this study
26. Blood donation or blood loss = 1 unit (1 unit is equal to 350-450 mL of blood) within
90 days prior to check-in in Period 1 or during enrollment
27. Subjects with poor venous access or intolerant to venipuncture
28. Unwilling or unable to comply with schedule visit, treatment plan and other study
procedures until end of study
29. Inability to communicate well (i.e. language problem, poor mental development,
psychiatric illness or poor cerebral function) that may impair the ability to provide
written informed consent or cooperate with clinical team
30. Subjects who are employees of International Bio Service Co., Ltd. or sponsor
31. Unwilling or unable to comply with schedule visit, treatment plan and other study
procedures until end of study.
32. Inability to communicate well (i.e. language problem, poor mental development,
psychiatric illness or poor cerebral function) that may impair the ability to provide
written informed consent or cooperate with clinical team)
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