Independent/Evidence-based/Sources: NIH ODS + DRILast reviewed February 2026
caredoctorevidence-based

Herbals & Others

Herbals & Others

This section covers herbal and other supplements that are not essential nutrients, from omega-3 and probiotics to adaptogens like ashwagandha. Most have no Recommended Dietary Allowance, so we focus on what the evidence actually supports, safe use, and interactions, sourced conservatively from the NIH.

Herbals & Others

Omega-3 Fatty Acids

Omega-3 fatty acids are a family of polyunsaturated fats (ALA, EPA, and DHA) that form part of cell membranes and suppor

Adequate Intake·no UL
Herbals & Others

Coenzyme Q10

Coenzyme Q10 is a fat-soluble compound made by the body and sold as a dietary supplement, with a well-established role i

No set RDA·no UL
Herbals & Others

Probiotics

Probiotics are live microorganisms that, given in adequate amounts, may confer a health benefit on the host, most studie

No set RDA·no UL
Herbals & Others

Melatonin

Melatonin is a hormone the brain makes in response to darkness that helps time the body's 24-hour sleep-wake cycle, and

No set RDA·no UL
Herbals & Others

Creatine

Creatine is a compound the body makes and gets from meat and fish that helps supply muscles with energy for short, high-

No set RDA·no UL
Herbals & Others

Collagen

Collagen is the most abundant structural protein in the body, and supplemental collagen peptides show modest, still-inco

No set RDA·no UL
Herbals & Others

Glucosamine and Chondroitin

Glucosamine and chondroitin are natural components of joint cartilage sold as dietary supplements for osteoarthritis, bu

No set RDA·no UL
Herbals & Others

Fiber

Dietary fiber is the indigestible part of plant foods; psyllium is a soluble, gel-forming fiber from Plantago ovata husk

38 g/day·no UL
Herbals & Others

Lutein and Zeaxanthin

Lutein and zeaxanthin are dietary xanthophyll carotenoids that concentrate in the retina as macular pigment, and no Reco

No set RDA·no UL
Herbals & Others

Carnitine

Carnitine is a conditionally essential compound derived from amino acids that helps shuttle long-chain fatty acids into

No set RDA·no UL
Herbals & Others

Ashwagandha

Ashwagandha (Withania somnifera) is an Ayurvedic adaptogenic herb studied mainly for stress, anxiety, and sleep, with no

No set RDA·no UL
Herbals & Others

Turmeric and Curcumin

Turmeric is a ginger-family spice whose main active compound, curcumin, is studied for osteoarthritis and other uses, bu

No set RDA·no UL
Herbals & Others

Black Cohosh

Black cohosh is a North American herb marketed for menopausal symptoms, but the NIH ODS reports insufficient evidence th

No set RDA·no UL
Herbals & Others

Valerian

Valerian is an herbal dietary supplement made from the roots of Valeriana officinalis and marketed as a mild sedative an

No set RDA·no UL
Herbals & Others

Saw Palmetto

Saw palmetto is a berry extract from the Serenoa repens palm marketed for urinary symptoms of an enlarged prostate, but

No set RDA·no UL
Herbals & Others

Garlic

Garlic (Allium sativum) is a culinary bulb used as a dietary supplement that research suggests may modestly lower choles

No set RDA·no UL
Herbals & Others

Ginkgo Biloba

Ginkgo biloba is an herbal supplement made from the leaf of the ginkgo tree, promoted for memory and cognition, but NIH

No set RDA·no UL
Herbals & Others

Asian Ginseng

Asian ginseng (Panax ginseng) is a traditional adaptogenic herb whose root contains ginsenosides; NIH sources say short-

No set RDA·no UL
Herbals & Others

Milk Thistle

Milk thistle (Silybum marianum) is an herbal supplement whose extract silymarin is promoted for liver support and blood

No set RDA·no UL
Herbals & Others

Echinacea

Echinacea is a North American flowering herb marketed as a dietary supplement for the common cold and other respiratory

No set RDA·no UL
Herbals & Others

Elderberry

Elderberry is the dark purple fruit of the European elder tree (Sambucus nigra), sold as a supplement for colds and flu,

No set RDA·no UL
Herbals & Others

St. John's Wort

St. John's wort (Hypericum perforatum) is a flowering plant taken as a supplement, most often marketed for low mood, wit

No set RDA·no UL
Herbals & Others

Green Tea Extract

Green tea extract is a concentrated botanical supplement whose main active catechin is EGCG, studied mostly for modest e

No set RDA·no UL
Herbals & Others

Ginger

Ginger (Zingiber officinale) is a culinary and herbal rhizome studied mainly for nausea and vomiting, with research sugg

No set RDA·no UL
Herbals & Others

Cranberry

Cranberry is a botanical dietary supplement, promoted mainly for urinary tract health, whose proanthocyanidins may reduc

No set RDA·no UL
Herbals & Others

Rhodiola Rosea

Rhodiola rosea is a herbal supplement traditionally used for fatigue and stress, but NIH says there is not enough reliab

No set RDA·no UL
Herbals & Others

Multivitamin and Multimineral

A multivitamin/mineral (MVM) supplement combines many vitamins and minerals in a single product, and there is no standar

No set RDA·no UL
Herbals & Others

Antioxidant Supplements

Antioxidants are substances such as vitamins C and E, beta-carotene, selenium, and other carotenoids that help regulate

No set RDA·no UL