Experimental Drug: Porcine sodium heparin, injectable solution - 5,000 IU/ 0.25 mL; Blau Farmacêutica S/A.

Comparator Drug: Heparin Sodium Injection, USP, injectable solution - 5,000 IU/ 0.5 mL; Fresenius Kabi Lake Zurich.

Evaluate the equivalence in terms of pharmacodynamics of heparin sodium (test product) and Heparin Sodium Injection, USP (comparator product). The clinical trial will last approximately 08 weeks and the study population will consist of 68 healthy research participants, 34 women and 34 men

Inclusion Criteria:

1. Provide written informed consent approved by a Research Ethics Committee (CEP) prior to any trial-related activities;
2. Healthy male or female participants between 18 and 55 years of age;
3. Be in good health or have no significant illness at the discretion of the responsible researcher/physician, in accordance with what is defined in this protocol and the assessments to which he/she is submitted during recruitment and selection, such as: clinical history, vital signs, anthropometric data, physical examination , ECG and laboratory tests;
4. Have a Body Mass Index (BMI) ≥ 18.5 and ≤ 29.9 Kg/m2, inclusive;
5. Present body weight between 60 and 100 Kg;
6. Agree to abstain from alcohol consumption for the duration of the study;
7. Present a negative result for the test for detecting alcohol in urine or saliva;
8. Test negative for the coronavirus (SARS-CoV-2);
9. Be able to understand the nature and purpose of the study, including risks and adverse events;
10. Act in accordance with the requirements of the entire trial, which is confirmed by signing the Free and Informed Consent Form (TCLE);
11. The drug can bring serious risks to the fetus, so the research participant, whether female or male, must agree to use a safe contraceptive method. Male participants must refrain from donating sperm from admission to final visit

Exclusion Criteria:

1. Present flu-like symptoms that, at the physician's discretion, are suspected of being infected by the coronavirus within 7 days prior to the period of hospitalization;
2. Having had direct and significant contact at medical discretion with people who tested positive for the coronavirus (SARS-CoV-2) test within 14 days prior to the hospitalization period;
3. Known to have a hypersensitivity reaction to the studied drug, pork foods or chemically related compounds;
4. Have used regular medication within 14 days prior to the hospitalization period;
5. Have used any medication within 7 days prior to the hospitalization period, except for contraceptives, cases in which, based on the half-life of the drug and/or active metabolites, complete elimination can be assumed or that, at the discretion of the responsible investigator/physician does not interfere in the pharmacokinetics or in the analytical stage of the study drug;
6. Having received any vaccine dose within 7 days prior to the hospitalization period;
7. Have received, within the three months prior to the study, treatment with any drug known to have well-defined toxic potential in large organs;
8. Have participated in any experimental study or ingested any experimental drug within the six months prior to the start of this study;
9. Have been hospitalized for any reason up to eight weeks before the start of the first treatment period of this study;
10. Have a history of liver, gastrointestinal or other conditions that may interfere with the absorption, distribution, metabolism or excretion of the drug;
11. Have a history of renal, respiratory, hematological, cardiological, neurological, neoplastic or psychiatric disease considered clinically significant at the physician's discretion;
12. Have a history of cardiac surgery (whatever), renal (renal exeresis or agenesis), gastrointestinal (partial or total removal of the esophagus, stomach, duodenum, jejunum, ileum, ascending colon, transverse colon, descending colon, sigmoid and rectum ) and surgery of the liver or pancreas;
13. Have any current symptom or disease, acute or chronic, being monitored or treated, significant at the discretion of the responsible researcher/physician;
14. Possess any active systemic or immunological disease or condition, including but not limited to the following general categories: cardiovascular/pulmonary, hepatic, renal or systemic infection or lactation;
15. Electrocardiographic findings not recommended at the physician's discretion for participation in the study;
16. Have the results of laboratory tests performed in the clinical evaluation of recruitment outside the values considered normal according to the reference values stipulated by the clinical analysis laboratory, unless they are considered not clinically significant by the researcher in charge/physician;
17. Have results of laboratory tests that, according to medical evaluation, affect the safety of the research participant;
18. Present clinically significant abnormalities on physical examination;
19. Have donated blood in the last 30 days;
20. Individuals taking aspirin or any other non-steroidal anti-inflammatory agent, with or without a doctor's prescription, within 10 days of treatment;
21. Clinically significant abnormality in vital signs or electrocardiogram (ECG), as judged by the investigator;
22. Known allergic or undesirable reactions following the use of unfractionated heparin;
23. Subjects who will undergo any surgical procedure within 14 days after the conclusion of the study;
24. Failure to show up for the coronavirus (SARS-CoV-2) test before admission;
25. Present a positive or inconclusive test for the coronavirus before admission;
26. Present a positive test for pregnancy during pre-hospitalization;
27. Present a positive result for the test for alcohol detection through urine or saliva;
28. Have a positive preliminary drug test with methamphetamine, opiate/morphine, marijuana/tetrahydrocannabinol, amphetamine, cocaine/benzoylecgonine and/or benzodiazepine;
29. Being a smoker or having quit smoking less than 6 months ago;
30. Have a history of illicit drug abuse;
31. Have an average alcohol intake of more than 3 alcoholic drinks in one day, or more than 7 alcoholic drinks per week, for women and more than 4 alcoholic drinks in one day, or more than 14 alcoholic drinks alcoholic beverages per week, for men;
32. Have consumed alcohol and/or drugs in the 48 hours prior to the period of hospitalization;
33. Having the habit of drinking more than five cups of coffee or tea a day;
34. Ingest food or drinks containing xanthines in the 48 hours prior to hospitalization;
35. Having done some intense physical exercise in the 48 hours prior to hospitalization;
36. Having unusual eating habits or with restrictions at the discretion of the responsible researcher/physician;
37. Be pregnant or breastfeeding, suspect pregnancy or wish to become pregnant while conducting the study;
38. Have donated or lost 450 mL or more of blood in the last three months;
39. Have donated or lost more than 1500 mL of blood in the last twelve months;
40. Show inability to stay awake or lying down for 1 hour or time required at the doctor's discretion;
41. Have any condition that prevents participation in the study at the discretion of the researcher in charge/physician;
42. Research participant who has participated in clinical trial protocols in the last 12 (twelve) months (CNS Resolution 251, of August 7, 1997, item III, subitem J).