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Head-to-head evidence comparison — which supplement is right for you?
Ceramides vs L. casei Shirota: L. casei Shirota has the stronger overall evidence (5 vs 5/10); the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
L. casei Shirota wins 1 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
1 of 1 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
350mg wheat-derived ceramides or 30-40mg glycosphingolipids daily
Once daily with food
Wheat-derived phytoceramides (Ceramide-PCD)
One 65-100 mL bottle of the fermented milk drink daily, delivering roughly 6.5 x 10^9 to 1 x 10^11 CFU depending on the product. Doses across trials span this whole range with no dose-comparison study to separate them.
any
Fermented milk drink containing L. casei Shirota (Yakult), 65-100 mL daily
4-8 weeks
8-12 weeks
4-8 weeks
4 weeks
2 weeks
2-12 weeks
8 weeks
The moisturizing effect of a wheat extract food supplement on women's skin: a randomized, double-blind placebo-controlled trial.
International Journal of Cosmetic Science (2011) · Rct · n=51
51 women aged 20-63 with dry to very dry skin received either 350 mg/day wheat extract oil (rich in ceramides) or placebo for 3 months
Efficacy of an Oral Skincare Supplement on Skin Aging: A 12-Week Randomized, Double-Blind, Placebo-Controlled Trial.
Dermatology and Therapy (Heidelberg) (2025) · Rct · n=63
63 participants randomized to an oral supplement of wheat oil extract plus low-molecular-weight sodium hyaluronate or placebo for 12 weeks
Potential Applications of Phyto-Derived Ceramides in Improving Epidermal Barrier Function.
Skin Pharmacology and Physiology (2017) · Review
Review of phyto-derived ceramides (phytoCERs) as the backbone of intercellular lipid membranes in the stratum corneum
Efficacy of daily intake of Lactobacillus casei Shirota on respiratory symptoms and influenza vaccination immune response: a randomized, double-blind, placebo-controlled trial in healthy elderly nursing home residents.
Am J Clin Nutr (2012) · Rct · n=737
PRIMARY ENDPOINTS ALL NULL: no effect on days with respiratory symptoms, probability of respiratory symptoms, or post-vaccination antibody titre
Probiotics and synbiotics in chronic constipation in adults: A systematic review and meta-analysis of randomized controlled trials.
Clin Nutr (2022) · Meta analysis
Probiotics overall increased stool frequency (SMD 0.71, 95% CI 0.37-1.04, p<0.00001) — but the effect was driven by Bifidobacterium lactis, 'not mixtures of probiotics, Bacillus coagulans Unique IS2 or Lactobacillus casei Shirota'
A study into the effect of Lactobacillus casei Shirota in preventing antibiotic associated diarrhoea including Clostridioides difficile infection in patients with spinal cord injuries: a multicentre randomised, double-blind, placebo-controlled trial.
EClinicalMedicine (2021) · Rct · n=359
PRIMARY ENDPOINT NULL: antibiotic-associated diarrhoea at 30 days 45% vs 42.1% (RR 1.071, 95% CI 0.8-1.4, p=0.639)
L. casei Shirota has a higher evidence score (5/10 vs 5/10) and wins in 1 of 3 categories.
No known interactions between Ceramides and L. casei Shirota have been documented in our database. However, always consult a healthcare provider before combining supplements.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.