Effect of GSP3 on Body Weight in Overweight and Obese Subjects

Inclusion Criteria: 1. Body Mass Index (BMI) ≥ 27 and ≤ 35 (at least 30% overweight and 30% obese subjects) 2. Ability to follow verbal and written instructions 3. Informed Consent Form signed by the subjects Exclusion Criteria: 1. Pregnancy or lactation 2. Absence of medically approved contraceptive methods in females of childbearing potential (e.g., hysterectomy, non-oral contraceptive medications or intrauterine device combined with a barrier method, two combined barrier methods such as diaphragm and condom or spermicide; bilateral tubal ligation and vasectomy are not acceptable contraceptive methods) 3. History of allergic reaction to carboxymethylcellulose, citric acid, modified cellulose, microcrystalline cellulose, and gelatin 4. Administration of investigational products within 1 month prior to Screening Visit 5. Night-shift workers 6. Subjects who stopped smoking within 6 months prior to Screening Visit or considering smoking cessation during the study 7. Subjects anticipating surgical intervention during the study 8. Known type 1 or type 2 diabetes 9. History of eating disorders including binge eating (except mild binge eater) 10. Weight change \> 3 kg within 3 months prior to and during the Screening period 11. Supine systolic blood pressure (SBP) \> 150 mm Hg and/or supine diastolic blood pressure (DBP) \> 90 mm Hg 12. Angina, coronary bypass, or myocardial infarction within 6 months prior to Screening Visit 13. History of gastroesophageal reflux disease 14. History of gastric or duodenal ulcer 15. History of gastroparesis 16. History of gastric bypass or any other gastric surgery 17. History of intragastric balloon 18. History of pancreatitis 19. History of hemorrhoids 20. History of malabsorption 21. Laxative users 22. History of hepatitis B or C 23. History of human immunodeficiency virus 24. History of cancer within the past 5 years (except adequately-treated localized basal cell skin cancer or in situ uterine cervical cancer) 25. Any other clinically significant disease interfering with the assessments of Attiva, according to the Investigator 26. Positive serum or urine pregnancy test(s) in females of childbearing potential 27. Plasma glucose ≥ 126 mg/dL (7.0 mmol/L) 28. Abnormal serum thyrotropin (TSH) 29. Serum triglycerides \> 500 mg/dL (5.65 mmol/L) 30. Positive test for drugs in the urine 31. Any relevant biochemical abnormality interfering with the assessments of Attiva, according to the Investigator 32. Anti-obesity medications (including herbal preparations) within 1 month prior to Screening Visit 33. Systemic corticosteroids within 1 month prior to Screening Visit 34. Thyroid hormones or preparations within 1 month prior to Screening Visit (except in subjects on stable dose of replacement therapy for at least 1 month) 35. Any other medication known to cause weight loss or weight gain within 1 month prior to Screening Visit 36. Medications treating hypertension within 1 month prior to Screening Visit 37. Medications treating dyslipidemia within 1 month prior to Screening Visit 38. Anticipated requirement for use of prohibited concomitant medications