Antiviral Biosea Health Health Benefits

Seaweed Nasal Spray Reduces Virus Infection

Most cold medicines only treat the symptoms; however, seaweed nasal spray attacks a cold at its source and is clinically proven to shorten the duration of a cold and help reduce the severity of cold symptoms. The are formulated to be preservative & steroid free, and can used during pregnancy, breastfeeding and kids from 12 months.

These solutions often have the natural ingredient iota-carragenan sourced from red seaweeds such as Eucheuma cottonii . Some may use the carrageenan Kappaphycus alvarezii . The carrageenan forms a barrier in the nasal passage that traps cold viruses, helping to reduce their multiplication and spread, allowing your body’s natural defences to sweep the viruses away from the nasal lining.

Seaweed Nasal Spray is in Multiple Products

These come in from a range of providers.

  • The Austrian company from Vienna Marinomed AG has produced a carrageenan product used by various called Carrogelose and that product is sold for colds and flus.
  • Flo Travel Nasal Spray from Entech
  • Mundicare® Cold Defence Nasal Spray from Mundipharma and they also sell a range of other natural products including melaleuca.
  • Sinomarin Plus Algae from Sinomarin from Greece, which uses the brown seaweed fucoidan extract Undaria pinnatifida and Spirulina plantensis/ Their product is for rhinitis, allergies and colds and flus.

Marinome published work in 2021 showing efficacy on SARS-COVID-2 with trials in Argentina. See this preliminary press release and the report from the Argentina hospital here

Seaweed extract reduces virus infection and impact
A range of products from Sinomarin as part of seaweed extracts in nasal sprays.

Is Whole Seaweed Effective?

For over 50 years, seaweed has been known to be effective as an antiviral compound and even tested against remdesivir in 2021. But the introduction and widespread sale of commercial products is a welcoming sign.

Marinome say a particular advantage of their carrageenan type product is the broad activity of the polymer against different virus strains, such as rhinovirus and colds and flus. They also show activity against coronaviruses. In clinical trials with more than 600 patients suffering from early symptoms of the common cold they show great improvement. Products containing their extracts, such as nasal sprays, lozenges or a throat spray have been marketed in Austria since 2008 and now have been established as the first causative treatment of common cold and flu-like diseases worldwide and are distributed in more than 40 countries.

Biosea Health suspects that the consumption of seaweed as a daily food will be effective in reducing the impact of viruses. That it reduces disease load in pigs and chickens in meat broiler and egg production is demonstrated. Research is needed to confirm.

Antiviral Biosea Health

Seaweed better than Remdesivir

The red seaweeds Kappaphycus and Eucheuma have been studied since 1958 for the prevention and treatment of virus infections and the most recent peer-reviewed studies say seaweed is better than remdesivir.

Seaweed is an Untapped Resource

There is an untapped resource in virus prevention and attenuation of symptoms particularly for countries who have an established seaweed industry. Seaweeds are emerging as a potential major player in the fight for the prevention and treatment of the latest disease. New evidence confirms seaweed is better than remdesivir as an effective anti-viral agent.

The idea that seaweed is protective against major pandemic viruses is not new. Back in 1958, seaweed was demonstrated to be effective against Influenza B. More recently seaweed was implicated as an protective factor in the different rates of HIV-AIDS disease burden between Africa and Asia. (Teas et al. 2004) Throughout the years since then, slowly science has been putting together a picture of the impressive anti-viral protection seaweeds could deliver on a population level.

With the ongoing pandemic taking its toll on economic, health and societal norms, countries with an established seaweed industry have a real opportunity to improve not only the health of their people but also the health of their economies.

Seaweed is Antiviral

In 2020 seaweed research is looking specifically at the impact of seaweed on the latest virus. The spike protein on the surface of the virus latches onto the ACE-2 receptor, a molecule on the surface of human cells. Once secured, the virus inserts its own genetic material into the cell, hijacking the cellular machinery to produce replica viruses. But the virus could just as easily be persuaded to lock onto a decoy molecule that offers a similar fit. The neutralized virus would be trapped and eventually degrade naturally. Previous research has shown this decoy technique works in trapping other viruses, including dengue, Zika, and influenza A.

Latest Research Publications

Four publications in 2020 confirm seaweed should be considered as part of a modern program.

1. Extracts from Red Seaweed inhibit Infection

Research from Korea, Song [10] screened 4 marine sulfated polysaccharides for their inhibitory activities against the virus including sea cucumber sulfated polysaccharide (SCSP), fucoidan from brown algae, iota-carrageenan from red algae, and chondroitin sulfate C from shark. The extract of carrageenan from red seaweeds was at concentrations of 3.90~500 μg/mL. (Song et al. 2020)

Such a dose would be achieved with a daily consumption of a few grams of dried Pacific Seamoss.

2. Seaweed Better than Remdesivir

In Kwon’s Nature paper they used a test of antiviral effectiveness against the virus. The data showed that a seaweed carragenan extract substantially outperformed remdesivir which is the current standard antiviral used to combat the disease. This was compared also with another treatments: heparin which is a common blood thinner, and a heparin variant stripped of its anticoagulant properties. These performed on par with remdesivir in inhibiting viral infection in mammalian cells.

The Science Daily Here has a good article on the progress for seaweeds with antiviral properties.

3. Natural Substances are Inhibitors

Thirdly, Gentile et al [11] screened over 14,000 compounds. The virus has a clearly defined protein and protease structure and they reduced the target compounds to down to 17 potential inhibitors. These have been identified among the natural substances of marine origin and believe one or more will be very useful proteases.

4. Commercial Anti-Viral Nasal Sprays Effective

Mariomed – a European based company introduced a nasal spray effective against rhinoviruses in 2014, have recently focused on the latest virus. Morokutti-Kurz et al [13] from Mariomed Biotech AG released a paper that takes iota-carragenan and kappa-carragenan and found the neutralization capacity of iota-carrageenan, was in the same range as a positive serum from a patient.

5. Seaweed Good For Boosting Immunity

Over the years, seaweed has been known to boost immunity. Improved nutrition is important. E.g. Iodine supports thyroid function and is an important organ for repairing damaged cells. Seaweed has 7 times the amount of zinc as oranges, so it only makes sense to use it for preventing sickness. The science says Vitamin C stimulates the production of white blood cells in the body – these are what fight off invaders such as viruses. Our bodies can’t make our own Vitamin C, so it has to be found in our diets or through supplements. That’s where seaweed comes in! With its high Vitamin C levels, it boosts your immune system greatly. There is 25% of your daily requirements in seaweed.


Eating seaweed may be very effective to reduce the activity of the latest virus. It certainly will not do any harm, but from the current literature will do a great deal of good, particularly in countries who do not want the $390 per vial / $2340 cost of treatment with remdesivir when $2 per day of seaweed may be better and more available.


[1] J. Teas, J. R. Hebert, J. H. Fitton, and P. V. Zimba, “Algae–a poor man’s HAART?,” Medical Hypotheses, vol. 62, no. 4, pp. 507-510, 2004. (Science Direct)

[2] E. M. Brown et al., “Seaweed and human health,” Nutrition reviews, vol. 72, no. 3, pp. 205-216, 2014.

[3] A. J. Te Velthuis, S. H. van den Worm, A. C. Sims, R. S. Baric, E. J. Snijder, and M. J. van Hemert, “Zn2+ inhibits virus and arterivirus RNA polymerase activity in vitro and zinc ionophores block the replication of these viruses in cell culture,” PLoS pathogens, vol. 6, no. 11, 2010. (PLOS)

[4] K. S. Kumar, K. Ganesan, and P. S. Rao, “Antioxidant potential of solvent extracts of Kappaphycus alvarezii (Doty) Doty–An edible seaweed,” Food chemistry, vol. 107, no. 1, pp. 289-295, 2008.(Link Here)

[5] R. J. Snelgrove, L. Edwards, A. J. Rae, and T. Hussell, “An absence of reactive oxygen species improves the resolution of lung influenza infection,” European journal of immunology, vol. 36, no. 6, pp. 1364-1373, 2006.  (PLOS)

[6] Grassauer A, Weinmuellner R, Meier C, Pretsch A, Prieschl-Grassauer E, Unger H. Iota-Carrageenan is a potent inhibitor of rhinovirus infection. Virol J. 2008;5:107. Published 2008 Sep 26. doi:10.1186/1743-422X-5-107 (PubMed)

[7] Koenighofer, M., Lion, T., Bodenteich, A. et al. Carrageenan nasal spray in virus confirmed common cold: individual patient data analysis of two randomized controlled trials. Multidiscip Respir Med 9, 57 (2014). (SpringerLink)

[8] Khamsi, R 2006 Seaweed compound blocks cervical cancer virus New Scientist

[9] Buck CB, Thompson CD, Roberts JN, Müller M, Lowy DR, et al. (2006) Carrageenan Is a Potent Inhibitor of Papillomavirus Infection. PLOS Pathogens 2(7): e69.

[10] Song, S, Peng, H, Wang, Q, Liu, Z, Dong, X, Wen, C, Ai, C, Zhang, Y, Wang, Z & Zhu, B-W 2020, Inhibitory activities of marine sulfated polysaccharides. Food & function.

[11] Gentile, D.; Patamia, V.; Scala, A.; Sciortino, M.T.; Piperno, A.; Rescifina, A. A Virtual Screening and Molecular Modeling Study. Mar. Drugs 2020, 18, 225. (Reference)

[12] Kwon, P.S., Oh, H., Kwon, S. Jin W, Zhang F, Fraser K, Hong J Linhardt RJ & Dordicket JS . Sulfated polysaccharides effectively inhibit in vitro. Cell Discov 6, 50 (2020). (Nature)

[13] Morokutti-Kurz, M; Graf, P; Grassauer, A; Prieschl-Grassauer E. 2020. SARS-CoV-2 in-vitro neutralization assay reveals inhibition of virus entry by iota-carrageenan. BioRxiv Preprint

Antiviral Biosea Health Health Benefits

Boost Immunity Naturally

Seaweed – the smart organic medicinal food for boosting your immunity. It is time to start thinking about our personal health. Is your immune system as strong as it will need to be if faced with a virus? Now is the time to boost your immunity naturally.


Busy lives mean we don’t eat as many fresh fruit and vegetables as we should.


Boost your immunity naturally with seaweed - image of seaweed at harvest
Seaweed is high in all immune-boosting nutrients and is a natural way yo boost your immune system quickly.

Medical experts are telling us the best way to boost immunity is to have a healthy diet of fruit, vegetables, nuts, and pulses. But the truth is most of us don’t get anywhere near enough fresh produce to boost immunity.

Now that we are all looking to be as healthy as we can to fight off viruses, we need an affordable, natural and easy short cut to boost our immunity naturally

Seaweed is packed with vitamins, minerals, antioxidants, and zinc. [1, 2]

With 7 times the zinc of oranges, seaweed is a powerful antiviral agent. [3]When you have seaweed in the diet, levels of vitamins and minerals reach cells in the body no matter what other poor diet choices you make.

Yes, seaweed can reverse the effects of eating a western take-out diet, so you can boost your immunity naturally without making big lifestyle changes. [4]


Boost Your Immunity naturally with seaweed
Zinc stops viruses from attaching to cells and causing infection. The graph on the right shows that zinc stopped 75% of common coronavirus from infecting cells


We no longer have to plow through plates of Kale to get the nutrients we need to boost our immunity naturally.

Biosea Health has taken whole dried seaweed and put into capsules so you can easily take immune-boosting amounts of seaweed every day without the hassle. Take it like a supplement to boost immunity

But for those who prefer to indulge a little. BioSea Health has also put seaweed into good quality chocolate so you can eat guilt-free and get a natural boost to your immunity.


BioSea Health has created the ultimate guilt-free immune boosting way to get your daily seaweed. Seaweed Chocolate – and it tastes great.


chocolate recipe Treat for Health
Include seaweed in chocolate for a guilt free treat.

What better way to get your medicinal level of seaweed than in 5 squares of luxurious chocolate. And not only are you increasing your immunity with seaweed, but you are also getting those extra anti-oxidants that good quality chocolate provides.

For those who have favourite chocolate, BioSea Health provides a dried powder product and a recipe so you can turn your favorite chocolate into an immune-boosting health food.

References – Boost Your Immunity

[1] E. M. Brown et al., “Seaweed and human health,” Nutrition reviews, vol. 72, no. 3, pp. 205-216, 2014.

[2] A. Farah Diyana, A. Abdullah, Z. Shahrul Hisham, and K. Chan, “Antioxidant activity of red algae Kappaphycus alvarezii and Kappaphycus striatum,” International Food Research Journal, vol. 22, no. 5, 2015. (Google Scholar)

[3] A. J. Te Velthuis, S. H. van den Worm, A. C. Sims, R. S. Baric, E. J. Snijder, and M. J. van Hemert, Zn2+ inhibits virus and arterivirus RNA polymerase activity in vitro and zinc ionophores block the replication of these viruses in cell culture, PLoS pathogens, vol. 6, no. 11, 2010. (PubMed)

[4] S. Wanyonyi, R. Du Preez, L. Brown, N. A. Paul, and S. K. Panchal, “Kappaphycus alvarezii as a food supplement prevents diet-induced metabolic syndrome in rats,” Nutrients, vol. 9, no. 11, p. 1261, 2017. (Nutrition)