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Head-to-head evidence comparison — which supplement is right for you?
Algae Oil vs Thiamine: Thiamine has the stronger overall evidence (7.5 vs 5.5/10); the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Thiamine wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Too few graded studies
Verdict
Too few graded studies
2 of 2 studies with measurable effects showed benefit.
Top outcomes
250-500mg combined EPA+DHA daily for general health; up to 1000mg+ DHA for higher omega-3 status or triglyceride goals
With meals
Algal DHA oil (or EPA+DHA oil)
50-100mg daily; 150-600mg benfotiamine for neuropathy
With food, Morning with other B vitamins
Benfotiamine (fat-soluble, higher bioavailability)
4-12 weeks
Weeks at adequate dose
Long term
2-4 weeks
4-8 weeks
4-12 weeks
Algal-oil capsules and cooked salmon: nutritionally equivalent sources of docosahexaenoic acid.
J Am Diet Assoc (2008) · Rct · n=32 healthy adults
Randomized, open-label, parallel-group 2-week study in 32 healthy adults comparing 600 mg DHA/day from algal-oil capsules with assayed portions of cooked salmon
Bioequivalence of docosahexaenoic acid from different algal oils in capsules and in a DHA-fortified food.
Lipids (2007) · Rct
28-day randomized, placebo-controlled, parallel-group study: two algal DHA oils (DHASCO-T and DHASCO-S) in capsules at 200, 600 and 1,000 mg DHA per day, and an algal-DHA-fortified snack bar, 12 per group. The abstract does not give the placebo group size or the total
High-fat meals rich in EPA plus DHA compared with DHA only have differential effects on postprandial lipemia and plasma 8-isoprostane F2alpha concentrations relative to a control high-oleic acid meal.
Am J Clin Nutr (2014) · Crossover · n=16 men
Randomized, double-blind crossover of four single high-fat meals in 16 men aged 35-70 with above-optimal fasting triacylglycerol: control oil, plus fish oil (5 g EPA and DHA), plus algal oil (5 g DHA), or high-linoleic oil
Dietary supplements for dysmenorrhoea
The Cochrane database of systematic reviews (2016) · Meta analysis · n=3101
Supplements versus other supplementsThere was no evidence of a difference in effectiveness between ginger and zinc sulphate (MD 0.02 points, 95% CI -0.58 to 0.62; one RCT, 101 women).
Evaluation of the Efficacy of the Addition of a Combination of Pyrimidine Nucleotides and Vitamin B1 and B12 to Standard Treatment in the Management of Painful Radiculopathy and in the Quality of Life of Patients
Nutrients (2024) · Rct · n=122
Both groups showed pain improvement, but the VAS reduction (control: 24.58 vs. experimental: 31.35) was not statistically significant.
Efficacy of B-vitamins and vitamin D therapy in improving depressive and anxiety disorders: a systematic review of randomized controlled trials
Nutritional neuroscience (2023) · Systematic review · n=2256
We identified 20 RCTs that matched all eligibility criteria, totaling 2,256 subjects, diagnosed with MDD, GAD, and depressive or anxiety symptoms.
Both points come from one phase III trial of benfotiamine, a fat-soluble thiamine derivative, in 165 patients with diabetic polyneuropathy (BENDIP, PMID 18473286): 300 mg or 600 mg a day or placebo for 6 weeks. The Neuropathy Symptom Score differed between groups in the per-protocol analysis (p = 0.033) and narrowly missed significance in the intention-to-treat analysis (p = 0.055), and the Total Symptom Score did not differ. Improvement was more pronounced at 600 mg, and both doses were well tolerated, so 600 mg, the highest dose tested, is the ceiling. Thiamine hydrochloride doses were not tested and cannot be read off this axis, and one 6-week trial cannot establish a minimum or optimal dose.
AI-estimated from published studies. Interpret as directional guidance.
Thiamine has a higher evidence score (7.5/10 vs 5.5/10) and wins in 2 of 3 categories.
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.