Evidence supporting the use of: Red seaweed (unspecified)
For the health condition: Colds (antiviral)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Red seaweed, particularly species like Gracilaria and Kappaphycus, has been studied for its antiviral properties, which may have relevance for supporting the treatment or prevention of colds. Several laboratory studies have identified sulfated polysaccharides (such as carrageenans) derived from red seaweed as agents that can inhibit the replication of a variety of viruses, including some that cause respiratory infections. For example, Morokutti-Kurz et al. (2009) demonstrated that iota-carrageenan, a compound from red seaweed, could reduce the duration of cold symptoms when delivered as a nasal spray. The proposed mechanism involves the polysaccharides forming a physical barrier on mucosal surfaces, thereby limiting viral attachment and entry into host cells.

However, while these findings are promising, most evidence is limited to in vitro (test tube) studies and a small number of clinical trials, often using specific, purified extracts rather than whole seaweed. There is not yet sufficient large-scale clinical evidence to strongly support the use of red seaweed or its extracts for treating or preventing the common cold in the general population. Therefore, while scientific interest and some preliminary supportive data exist, the overall evidence base is still limited, resulting in a modest rating.

More about Red seaweed (unspecified)
More about Colds (antiviral)

Other ingredients used for Colds (antiviral)

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beta-pinene
bilberry
bisabolol
black cumin
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blueberry
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catechins
cinnamon
citrus bioflavonoids
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clove
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echinacea purpurea
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green tea
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monolaurin
oregano
perilla
phellodendron amurense
phenolic acids
pineapple
pomegranate
quercetin
resveratrol
rhizome
rosemary
schizonepeta
shiitake mushroom
spirulina
thyme
vitamin C
vitamin D
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hyssop
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Clerodendrum trichotomum
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Capillary Artemisia
Citron
Citrus
Chinese Raisintree
Cowherb
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Cinnamaldehyde
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Products containing Red seaweed (unspecified)

We currently have no products on Vitabase that contain this ingredient.