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A drug-drug interaction study in healthy adult human subjects under fasting conditions.

A drug-drug interaction study of Treatment A [Usnoflast (ZYIL1) 75mg (Usnoflast (ZYIL1) 50 mg capsule + Usnoflast (ZYIL1) 25 mg capsule)] and Treatment B [Caffeine Citrate Oral Solution, USP 20 mg/mL, (equivalent to 10 mg/mL of caffeine base) (Dose = 100 mg of Caffeine base), Midazolam Hydrochloride syrup 2mg/mL (Each mL contains 2 mg of Midazolam base) (Dose = 2 mg) and Bupropion 75mg Tablet] in healthy adult human subjects under fasting conditions - NIL

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2026/01/101997
Enrollment
34
Registered
2026-01-23
Start date
Unknown
Completion date
Unknown
Last updated
2026-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Intervention1: Usnoflast: Dose : 75 mg (50 mg +25 mg) Form : Capsule Route : Oral Duration : 14 days Intervention2: Caffeine Citrate + Midazolam Hydrochloride + Bupropion: Dose : 20 mg/mL + 2mg/mL + 7

Sponsors

Zydus Lifesciences Limited
Lead Sponsor
Ms Zydus Lifesciences Limited
Collaborator

Eligibility

Inclusion criteria

Inclusion criteria: 1)Male and/or non-pregnant, non-lactating female. 2)Female of child-bearing potential must have a negative serum beta human chorionic gonadotropin pregnancy test performed within 28 days of the first dose of study medication. They must be using an acceptable form of contraception. 3)18.5 to 30.0 kg/m2, both inclusive; BMI value should be rounded off to one significant digit after decimal point. 4)Able to communicate effectively with study personnel. 5) Non-smokers, non-tobacco and non-alcoholic users (i.e. having no past history of alcoholism, smoking and tobacco consuming for at least one year prior to study) 6) Willing to provide written informed consent to participate in the study. 7) All volunteers must be judged by the principal or sub-investigator or physician as normal and healthy during a pre-study safety assessment performed within 28 days of the first dose of study medication

Exclusion criteria

Exclusion criteria: 1)History of allergic responses to Caffeine, Bupropion & Midazolam or other related drugs, or any of its and usnoflast formulation ingredients. 2) Have significant diseases or clinically significant abnormal findings during screening [medical history, physical examination (clinical examination), laboratory evaluations, ECG recording and Chest X-ray, gynecological history and examination (including pelvic examination and routine breast examination) (for female volunteers)]. 3) Any disease or condition like diabetes, psychosis or others, which might compromise the haemopoietic, gastrointestinal, renal, hepatic, cardiovascular, respiratory, central nervous system or any other body system. 4) History or presence of respiratory conditions (i.e., moderate to severe asthma, chronic obstructive pulmonary disease [COPD], etc.). 5) Use of any hormone replacement therapy within 3 months prior to Period 1 dosing. 6) Use of any depot injection or implant of any drug within 3 months prior to Period 1 dosing. 7)Use of CYP enzyme inhibitors or inducers within 30 days prior to Period 1 dosing. 8) History or evidence of drug dependence. 9) History of difficulty with donating blood or difficulty in accessibility of veins. 10) A positive hepatitis screen (includes subtypes B & C). 11) A positive test result for HIV antibody. 12) Volunteer who have received a known investigational drug within seven elimination half-life of the administered drug prior to Period 1 dosing. 13)History of difficulty in swallowing or of any gastrointestinal disease, which could affect drug absorption. 14)Intolerance to venipuncture. 15)Any food allergy, intolerance, restriction or special diet that, in the opinion of the principal investigator or sub-investigator, could contraindicate the volunteer s participation in this study. 16)Institutionalized volunteer 17)Use of any prescribed medications within 30 days prior to Period 1 dosing. 18)Use of any OTC products, vitamin and herbal products, etc., within 7 days prior to Period 1 dosing. 19)Use of grapefruit and grapefruit containing products within 7 days prior to Period 1 dosing. 20)Ingestion of any caffeine or xanthine products (i.e. coffee, tea, chocolate, and caffeine-containing sodas, colas, etc.) and except protocol defined drug B1 (Caffeine Citrate Oral Solution) administration, recreational drugs within 72 hours prior to Period 1 dosing. 21)Ingestion of any unusual diet, for whatever reason (e.g.: low sodium) for three weeks prior to Period 1 dosing. 22) SGOT, SGPT and alkaline phosphatase values are 1.1 times higher than the upper limit of normal range during screening. 23) Serum bilirubin values are higher than the upper limit of normal range during screening. 24) Serum creatinine higher than upper limit during screening 25) History or symptoms of narrow angle glaucoma. 26) History of head trauma. 27) History or presence of seizure, epilepsy, central nervous system (CNS) tumor, bulimia, anorexia nervosa. 28) History or presence of severe hepatic cirrhosis. 29) Volunteer who are undergoing abrupt discontinuation of sedatives (including benzodiazepines).

Design outcomes

Primary

MeasureTime frame
To evaluate the drug-drug interaction of Treatment A [Usnoflast (ZYIL1) 75mg (Usnoflast (ZYIL1) 50 mg capsule + Usnoflast (ZYIL1) 25 mg capsule)] and Treatment B [Caffeine Citrate Oral Solution, USP 20 mg/mL, (equivalent to 10 mg/mL of caffeine base) (Dose = 100 mg of Caffeine base), Midazolam Hydrochloride syrup (Each mL contains 2 mg of Midazolam base) 2mg/mL (Dose = 2 mg) and Bupropion 75mg Tablet] in healthy adult human subjects under fasting conditions.Timepoint: Day 1 to Day 14

Secondary

MeasureTime frame
To monitor the safety and tolerability of the subjectsTimepoint: Day 1 to Day 14

Countries

India

Contacts

Public ContactDr Maulik Doshi MD DM

Zydus Lifescience Ltd

Maulik.Doshi@zyduslife.com02717665555

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 7, 2026