Algas, Algue Rouge Marine, Carageenan Gum, Carastay, Carrageen, Carrageenin, Carragenano, Carragenina, Carragheenan, Carraghénane, Carraghénine, Chondrus Extract, Danish Agar, Eucheuma Spinosum Gum, Extrait de Mousse d'Irlande, Galgarine, Iota-Carrageenan, Irish Moss, Irish Moss Algae, Irish Moss Extract, Irish Moss Gelose, Kappa-Carrageenan, Lambda-Carrageenan, Marine Colloids, Mousse d'Irlande, Norsk Gelatin, PES, Processed Eucheuma Seaweed, Red Marine Algae, Red Seaweed Extract, Vegetable Gelatin.
Overview InformationCarrageenan is made from parts of various red algae or seaweeds and is used for medicine.
Carrageenan is used for coughs, bronchitis, tuberculosis, and intestinal problems. The French use a form that has been changed by adding acid and high temperatures. This form is used to treat peptic ulcers, and as a bulk laxative.
Some people apply carrageenan directly to the skin for discomfort around the anus.
In manufacturing, carrageenan is used as a binder, thickening agent, and as a stabilizer in medications, foods, and toothpaste. Carrageenan is also an ingredient in weight loss products.
How does it work?Carrageenan contains chemicals that may decrease stomach and intestinal secretions. Large amounts of carrageenan seem to pull water into the intestine, and this may explain why it is tried as a laxative. Carrageenan also might decrease pain and swelling (inflammation).
Uses & Effectiveness
Insufficient Evidence for
- Common cold. Most research shows that spraying saline with iota-carrageenan into the nose does not reduce common cold symptoms when compared with using a regular saline spray. But not all research agrees.
- Weight loss.
- Peptic ulcers.
- Intestinal problems.
- Other conditions.
Side Effects & SafetyWhen taken by mouth: Carrageenan is LIKELY SAFE for most people when taken by mouth in food amounts. There is also a chemically altered form of carrageenan that is available in France to treat peptic ulcers. This form is POSSIBLY UNSAFE because animal studies have shown that it might cause cancer. But this risk hasn't been shown in humans.
When sprayed into the nose: Carrageenan is POSSIBLY SAFE for most people when sprayed into the nose, short-term. No side effects have been reported in clinical research.
Special Precautions & Warnings:Pregnancy and breast-feeding: Carrageenan is LIKELY SAFE in amounts found in food, but there's not enough information to know if it's safe in the larger amounts that are used as medicine. It's best to stay on the safe side and stick to food amounts.
Bleeding disorders: Carrageenan might slow blood clotting and increase bleeding. In theory, carrageenan might make bleeding disorders worse.
Low blood pressure: Carrageenan might lower blood pressure. In theory, taking carrageenan might make blood pressure become too low in people with low blood pressure.
Surgery: Carrageenan might slow blood clotting and lower blood pressure in some people. In theory, carrageenan might increase the risk for bleeding and interfere with blood pressure control during surgical procedures. Stop using carrageenan at least 2 weeks before a scheduled surgery.
Be cautious with this combination
Medications for high blood pressure (Antihypertensive drugs) interacts with CARRAGEENAN
Carrageenan seems to decrease blood pressure. Taking carrageenan along with medications for high blood pressure might cause your blood pressure to go too low.
Some medications for high blood pressure include captopril (Capoten), enalapril (Vasotec), losartan (Cozaar), valsartan (Diovan), diltiazem (Cardizem), Amlodipine (Norvasc), hydrochlorothiazide (HydroDiuril), furosemide (Lasix), and many others.
Medications taken by mouth (Oral drugs) interacts with CARRAGEENAN
Carrageenan is a thick gel. Carrageenan can stick to medications in the stomach and intestines. Taking carrageenan at the same time as medications that you take by mouth can decrease how much medication your body absorbs, and decrease the effectiveness of your medication. To prevent this interaction, take carrageenan at least one hour after medications you take by mouth.
Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs) interacts with CARRAGEENAN
Carrageenan might slow blood clotting. Taking carrageenan along with medications that also slow clotting might increase the chances of bruising and bleeding.
Some medications that slow blood clotting include aspirin, clopidogrel (Plavix), diclofenac (Voltaren, Cataflam, others), ibuprofen (Advil, Motrin, others), naproxen (Anaprox, Naprosyn, others), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, warfarin (Coumadin), and others.
The appropriate dose of carrageenan depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for carrageenan. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.
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- Perotti, M. E., Pirovano, A., and Phillips, D. M. Carrageenan formulation prevents macrophage trafficking from vagina: implications for microbicide development. Biol.Reprod. 2003;69(3):933-939. View abstract.
- Raouf, A. H., Hildrey, V., Daniel, J., Walker, R. J., Krasner, N., Elias, E., and Rhodes, J. M. Enteral feeding as sole treatment for Crohn's disease: controlled trial of whole protein v amino acid based feed and a case study of dietary challenge. Gut 1991;32(6):702-707. View abstract.
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- Watanabe, K., Reddy, B. S., Wong, C. Q., and Weisburger, J. H. Effect of dietary undegraded carrageenan on colon carcinogenesis in F344 rats treated with azoxymethane or methylnitrosourea. Cancer Res. 1978;38(12):4427-4430. View abstract.
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- Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
- European Commission. Opinion of the Scientific Committee on Food on Carrageenan. Available at: https://ec.europa.eu/food/sites/food/files/safety/docs/sci-com_scf_out164_en.pdf
- Fazekas T, Eickhoff P, Pruckner N, et al. Lessons learned from a double-blind randomised placebo-controlled study with a iota-carrageenan nasal spray as medical device in children with acute symptoms of common cold. BMC Complement Altern Med. 2012;12:147. View abstract.
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- Ramezanpour M, Murphy J, Smith JLP, Vreugde S, Psaltis AJ. In vitro safety evaluation of human nasal epithelial cell monolayers exposed to carrageenan sinus wash. Int Forum Allergy Rhinol. 2017;7(12):1170-1177. View abstract.
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- Coggins, C., Blanchard, K., Alvarez, F., Brache, V., Weisberg, E., Kilmarx, P. H., Lacarra, M., Massai, R., Mishell, D., Jr., Salvatierra, A., Witwatwongwana, P., Elias, C., and Ellertson, C. Preliminary safety and acceptability of a carrageenan gel for possible use as a vaginal microbicide. Sex Transm.Infect. 2000;76(6):480-483. View abstract.
- Cummins, J. E., Jr., Guarner, J., Flowers, L., Guenthner, P. C., Bartlett, J., Morken, T., Grohskopf, L. A., Paxton, L., and Dezzutti, C. S. Preclinical testing of candidate topical microbicides for anti-human immunodeficiency virus type 1 activity and tissue toxicity in a human cervical explant culture. Antimicrob.Agents Chemother. 2007;51(5):1770-1779. View abstract.
- Dumelod, B. D., Ramirez, R. P., Tiangson, C. L., Barrios, E. B., and Panlasigui, L. N. Carbohydrate availability of arroz caldo with lambda-carrageenan. Int.J.Food Sci.Nutr. 1999;50(4):283-289. View abstract.
- Elias, C. J., Coggins, C., Alvarez, F., Brache, V., Fraser, I. S., Lacarra, M., Lahteenmaki, P., Massai, R., Mishell, D. R., Jr., Phillips, D. M., and Salvatierra, A. M. Colposcopic evaluation of a vaginal gel formulation of iota-carrageenan. Contraception 1997;56(6):387-389. View abstract.
- Flower, R. J., Harvey, E. A., and Kingston, W. P. Inflammatory effects of prostaglandin D2 in rat and human skin. Br.J Pharmacol. 1976;56(2):229-233. View abstract.
- Kilmarx, P. H., van de Wijgert, J. H., Chaikummao, S., Jones, H. E., Limpakarnjanarat, K., Friedland, B. A., Karon, J. M., Manopaiboon, C., Srivirojana, N., Yanpaisarn, S., Supawitkul, S., Young, N. L., Mock, P. A., Blanchard, K., and Mastro, T. D. Safety and acceptability of the candidate microbicide Carraguard in Thai Women: findings from a Phase II Clinical Trial. J Acquir.Immune.Defic.Syndr. 11-1-2006;43(3):327-334. View abstract.
- Maguire, R. A., Bergman, N., and Phillips, D. M. Comparison of microbicides for efficacy in protecting mice against vaginal challenge with herpes simplex virus type 2, cytotoxicity, antibacterial properties, and sperm immobilization. Sex Transm.Dis. 2001;28(5):259-265. View abstract.
- Ogino, M., Majima, M., Kawamura, M., Hatanaka, K., Saito, M., Harada, Y., and Katori, M. Increased migration of neutrophils to granulocyte-colony stimulating factor in rat carrageenin-induced pleurisy: roles of complement, bradykinin, and inducible cyclooxygenase-2. Inflamm.Res. 1996;45(7):335-346. View abstract.
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