A Phase 4 interventional study of Tribulus terrestris and Placebo in Oligospermia, sponsored by Herbarium Laboratorio Botanico Ltda. Recruiting at 1 site in Brazil. Open to male participants aged 25 Years to 60 Years. Per ClinicalTrials.gov, last updated 2025-04-06.
Sponsored by Herbarium Laboratorio Botanico Ltda · Phase 4, Interventional, and Treatment
Efficacy and Safety of Products Based on Tribulus terrestris, L. in Men with Oligospermia. It is expected that the benefits of investigational products outweigh the risks that will be mitigated or carefully managed by the study team.
64 studies on the registry are indexed under Oligospermia; 17 are open to participants now.
This study's planned enrollment of 204 is above the median of 65 across 46 interventional studies indexed under Oligospermia.
Browse Oligospermia studies →Herbarium Laboratorio Botanico Ltda is the lead sponsor of 11 studies on the registry; 2 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Drug: Tribulus terrestris
Drug: Tribulus terrestris
Drug: Tribulus terrestris
Other: Placebo
Tribulus terrestris
Placebo
Evaluate the effectiveness of each product in men with changes in their spermogram compared to placebo.
Any improvement in sperm concentration (n/mL)
Time frame: 3 months
Plan to share: No
No publications or documents are linked to this record.
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Studies of the drug tested here: Tribulus extract
Herbarium Laboratorio Botanico Ltda