Head-to-head evidence comparison — which supplement is right for you?
Vitamin B6 wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
300-600mg extract (2.5% ursolic acid)
Morning, With or without food
Standardized extract (leaf)
25-100mg daily
Morning with food, Can take with other B vitamins
P-5-P (Pyridoxal-5-Phosphate)
2-4 weeks
2-4 weeks
4-8 weeks
2-4 weeks
1-2 cycles
Months of high doses
The Neuroprotective Potential of Ocimum Plant Species: Seasoning the Mind with Sweet and Holy Basil
Nutrients (2025) · Systematic review
This review synthesizes experimental evidence regarding Ocimum species with neuroprotective potential in AD, particularly Ocimum sanctum and Ocimum basilicum.
Modulation of the hypothalamic-pituitary-adrenal (HPA) axis by plants and phytonutrients: a systematic review of human trials
Nutritional neuroscience (2022) · Systematic review
For most phytonutrients, the effects of supplementation on HPA-axis activity in humans is unclear.
Medicinal Plants in the Treatment of Respiratory Diseases and their Future Aspects
Recent patents on biotechnology (2025) · Systematic review
Some medicinal plants, notably Echinacea purpurea and Zingiber officinale, exhibit potential for adjuvant symptomatic therapy in respiratory conditions, such as chronic obstructive pulmonary disease (COPD), bronchitis, asthma, the common cold, cough, and whooping cough.
Dosage exploration of combined B-vitamin supplementation in stroke prevention: a meta-analysis and systematic review
The American journal of clinical nutrition (2024) · Meta analysis · n=76664
In areas without and with partial folic acid fortification, combined B-vitamin supplementation significantly reduced the risk of stroke by 34% [RR: 0.66; 95% confidence interval (CI): 0.50, 0.86] and 11% (RR: 0.89; 95% CI: 0.79, 1.00), respectively.
Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression
Nutrients (2021) · Meta analysis · n=6276
Further, meta-regression showed no significant associations of treatment effects with any of the potential predictors.
Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
The Cochrane database of systematic reviews (2018) · Meta analysis · n=83000
We found that giving B vitamin supplements to cognitively healthy adults, mainly in their 60s and 70s, probably has little or no effect on global cognitive function at any time point up to 5 years (SMD values from -0.03 to 0.06) and may also have no effect at 5-10 years (SMD -0.01).
Vitamin B6 has a higher evidence score (9/10 vs 8.5/10) and wins in 2 of 3 categories.
For reduce anxiety & stress, Holy Basil has a higher relevance score (80 vs 55).
No known interactions between Holy Basil and Vitamin B6 have been documented in our database. However, always consult a healthcare provider before combining supplements.