Ayurvedic botanical · adaptogen research
Ashwagandha (Withania somnifera)
Ashwagandha has a long history in Ayurvedic medicine. Modern trials have studied specific preparations for stress and sleep, but products and extracts vary substantially.
Ingredient semantics + evidence
What is in a supplement — and what does the research actually say?
This glossary is built for the questions people ask search engines and AI tools: what an ingredient is, why it is used, what human research exists, how it has been used historically, and what important safety limits belong beside the claim.
Ingredient evidence is not automatically evidence for a finished product. Form, dose, extract, strain and combination can change what a study actually supports.
Educational boundary: This page does not diagnose conditions, recommend individual doses, or say a supplement can cure, treat or prevent disease. Medication use, pregnancy, surgery and significant medical conditions can change supplement safety.
European herbal tradition · seasonal research
Elderberry (Sambucus nigra)
Elderberry has been used in European folk medicine for respiratory illnesses. Human research remains limited and preliminary; traditional use should not be confused with proof of prevention or treatment.
Essential mineral
Magnesium
Magnesium is required for normal muscle and nerve function, energy-related biochemical reactions and many enzyme systems. Supplement form, dose and dietary intake matter.
Essential vitamin
Vitamin D / Vitamin D3
Vitamin D has established roles in calcium handling, bone and muscle physiology and normal immune function. Individual need varies with diet, sun exposure, age and health status.
Nutrient family
B vitamins / B-complex
B vitamins act as cofactors in normal metabolism and nervous-system physiology. A nutritional role does not mean a B-complex explains or treats persistent fatigue.
Essential mineral
Calcium
Calcium is a major structural component of bone and also participates in normal muscle and nerve physiology. Whether supplementation is useful depends heavily on dietary intake and life stage.
Microbiome · strain-specific evidence
Probiotics
Probiotic evidence is highly strain- and use-specific. Genus and species alone often are not enough to match a commercial blend to a clinical trial; strain designation and viable amount matter.
Tea amino acid · relaxation research
L-theanine
L-theanine is an amino acid found naturally in tea and has been studied in human trials related to stress, attention and relaxation. Study doses and formulations should be checked before applying findings to a blend.
Traditional nighttime herb
Valerian (Valeriana officinalis)
Valerian has a long history of use for relaxation and sleep. Modern evidence is mixed, which is why Wellness Lens describes it as traditional nighttime support rather than a proven insomnia treatment.
Traditional calming herb
Passionflower (Passiflora)
Passionflower has traditional use in calming and nighttime herbal preparations. Human research exists but remains limited; finished-formula claims should stay proportional to the evidence.
Ayurvedic botanical · extract research
Boswellia (Boswellia serrata)
Boswellia extracts have been studied in human joint research. Results from a standardized extract cannot automatically be transferred to every Boswellia-containing blend when amount or standardization differs.
Traditional liver herb · clinical research
Milk thistle / Silymarin
Milk thistle has a long history of liver-related traditional use. NCCIH notes that clinical evidence is insufficient for firm conclusions about treating liver diseases, so Wellness Lens uses support-oriented—not disease-treatment—language.
Amino-acid derivative · glutathione research
N-acetylcysteine (NAC)
NAC is a precursor used by the body in glutathione synthesis and has been researched in many settings. Its medical uses and supplement uses should not be conflated, and evidence must be matched to the actual context and dose studied.
Search by product instead
Connect ingredients to Bart's product lists.
The product index organizes the two current Bart's Top 10 collections by product name and general wellness topic, while the research hub explains how Wellness Lens decides what an ingredient study can and cannot support.