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Head-to-head evidence comparison — which supplement is right for you?
Biotin vs Egg White Protein: Biotin has the stronger overall evidence (5 vs 3.5/10); they work on different things and are often used together, not either/or. Take the 60-second quiz for a pick tailored to your goals.
Biotin wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Too few graded studies
1 of 1 studies with measurable effects showed benefit.
Top outcomes
Verdict
Too few graded studies
Top outcomes
2500-5000mcg (2.5-5mg) for hair/nails
Any time of day
Biotin capsules or tablets
15 g per serving, the dose of the one cited trial (15 g a day, which did not change body composition or strength compared with carbohydrate). Label servings are 20-30 g, above that dose, on the reasoning that about 20 g reaches the leucine threshold for muscle building.
Any time of day
Dried/pasteurized egg white protein
Raw egg protein can reduce biotin absorption
Use cooked egg protein or separate biotin from raw egg protein by 2+ hours.
3-6 months
3-6 months
8-12 weeks
Acute
Throughout use
Quantitative comparison of the efficacy of clinical drug treatments for primary progressive multiple sclerosis
Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia (2023) · Meta analysis · n=3779
Model-based meta-analysis of 15 studies in 3,779 patients with primary progressive multiple sclerosis, 9 placebo-controlled and 6 single-arm, covering 12 drugs.
Vitamin supplementation in the treatment of optic neuritis: A systematic review and meta-analysis
Multiple sclerosis and related disorders (2025) · Meta analysis
The effect of MD1003 (high-dose biotin), vitamin A, and vitamin D on retinal nerve fiber layer (RNFL) thickness from pooled results showed a mean change of 0.15 (SMD 0.15, 95 % CI, -0.33 to 0.64, I2 = 61 %, τ² = 0.11, p = 0.08), which was not significant.
High-dose biotin for multiple sclerosis: A systematic review and meta-analyses of randomized controlled trials
Multiple sclerosis and related disorders (2021) · Meta analysis · n=889
Pooled data for ITW25 at 12 to 15 months yielded statistical significance (RR 2.06; 95% CI 1.04-4.09; 2 trials; 796 participants; I2 = 0%) [moderate COE] favoring HDB among patients with PMS.
Effects of egg white protein supplementation on muscle strength and serum free amino acid concentrations.
Nutrients (2012) · Rct · n=30
8-week randomized double-blind trial in 30 female collegiate athletes: 15g egg white protein vs maltodextrin pre-training
Moderately increased protein intake predominately from egg sources does not influence whole body, regional, or muscle composition responses to resistance training in older people.
J Nutr Health Aging (2009) · Rct · n=36
12-week resistance-training trial in 36 older adults at 0.9 vs 1.2 g/kg/day protein, higher intake from eggs
The effects of the combination of egg and fiber on appetite, glycemic response and food intake in normal weight adults - a randomized, controlled, crossover trial.
Int J Food Sci Nutr (2016) · Crossover · n=48
Randomized crossover trial in 48 healthy adults comparing egg-based breakfasts to a low-protein cereal breakfast
Biotin has a higher evidence score (5/10 vs 3.5/10) and wins in 2 of 3 categories.
Raw egg protein can reduce biotin absorption Use cooked egg protein or separate biotin from raw egg protein by 2+ hours. Consult a healthcare provider for personalized advice.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.