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Head-to-head evidence comparison — which supplement is right for you?
Probiotics wins 3 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
6 of 7 studies with measurable effects showed benefit.
Top outcomes
Verdict
Probably helps
18 of 26 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Pregnenolone and Probiotics have evidence — compare verdict strength side-by-side.
5-50mg daily
Morning (mimics natural production), With or without food
Micronized pregnenolone capsules
10-20 billion CFU
With or without food (strain-dependent), Same time daily for consistency
Capsules with multiple strains
2-4 weeks
2-4 weeks
2-4 weeks
Variable
2-4 weeks
4-8 weeks
4-8 weeks
First 1-2 weeks
Adjunctive use of anti-inflammatory drugs for schizophrenia: A meta-analytic investigation of randomized controlled trials
The Australian and New Zealand journal of psychiatry (2019) · Meta analysis · n=2914
The comparative evaluation of efficacy and safety supported the use of anti-inflammatory adjuvant therapy over the use of antipsychotics alone.
Sex hormones and oxytocin augmentation strategies in schizophrenia: A quantitative review
Schizophrenia research (2015) · Meta analysis · n=1149
Significant effects were found for estrogen action (k=10), regarding total symptoms (Hedges' g=0.63, p=0.001), positive (Hedges' g=0.42, p<0.001), and negative symptoms (Hedges' g=0.35, p=0.001).
Advancements in Non-Dopaminergic Treatments for Schizophrenia: A Systematic Review of Pipeline Developments
Pharmacopsychiatry (2024) · Systematic review
Systematic review examining Pregnenolone efficacy
Preventive Effect of Probiotics on Oral Mucositis Induced by Cancer Treatment: A Systematic Review and Meta-Analysis
International journal of molecular sciences (2022) · Meta analysis · n=708
Three trials using Lactobacilli-based probiotics reported that the incidence of oral mucositis in the probiotic group was significantly low (risk ratio [RR] = 0.84, 95% confidence interval [CI] = 0.77−0.93, p = 0.0004).
Probiotics for treating acute infectious diarrhoea
The Cochrane database of systematic reviews (2020) · Meta analysis · n=12127
Effect size was similar in the sensitivity analysis and marked heterogeneity persisted.
Probiotics for the prevention of Clostridium difficile-associated diarrhea in adults and children
The Cochrane database of systematic reviews (2017) · Meta analysis · n=9955
A complete case analysis (i.e. participants who completed the study) among trials investigating CDAD (31 trials, 8672 participants) suggests that probiotics reduce the risk of CDAD by 60%.
Based on meta-analyses showing benefits for IBS and digestive symptoms. Effect sizes varied considerably between studies with low to very low certainty of evidence. Initial GI symptoms common when starting but typically resolve within 1-2 weeks.
AI-estimated from published studies. Interpret as directional guidance.
Probiotics has a higher evidence score (9/10 vs 8.5/10) and wins in 3 of 3 categories.
Both Pregnenolone and Probiotics score equally (60) for support mood.
No known interactions between Pregnenolone and Probiotics have been documented in our database. However, always consult a healthcare provider before combining supplements.