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Results 621-640 of 3153

NatMed
Guarana
Guarana (Paullinia cupana) is a plant native to the Amazon. It is a common ingredient of energy drinks and can be unsafe in large amounts. Guarana contains caffeine. Caffeine works by stimulating the central nervous system, heart, and muscles. Guarana also contains theophylline and theobromine, which are chemicals similar to caffeine. People take guarana by mouth for obesity, athletic performance, mental performance, to increase energy, and for many other reasons, but there is no good scientific evidence to support these uses. Guarana can also be unsafe when taken long-term in large amounts.
NatMed
Vitamin B6
Vitamin B6 is a type of B vitamin. Pyridoxine, pyridoxal, and pyridoxamine are all forms of vitamin B6. It's found in certain foods and also made in a lab. Vitamin B6 is needed for the proper function of sugars, fats, and proteins in the body. It's also necessary for the development of the brain, nerves, skin, and many other parts of the body. It's found in cereals, legumes, and eggs, and often used with other B vitamins in vitamin B complex products. People commonly use vitamin B6 for preventing and treating vitamin B6 deficiency. It is also used for heart disease, premenstrual syndrome (PMS), depression, morning sickness, Alzheimer disease, menstrual cramps, diabetes, and many other conditions, but there is no good scientific evidence to support many of these other uses.
NatMed
Feverfew
Feverfew (Tanacetum parthenium) is a plant native to Asia Minor and the Balkans. Feverfew dried leaves, fresh leaves, and extracts are used in medicine. Feverfew leaves contain many different chemicals, including one called parthenolide. Parthenolide, as well as other chemicals in feverfew, might help decrease migraine headaches. People most commonly use feverfew for migraine headaches. People also use feverfew for itching, tension headache, and many other conditions, but there is no good scientific evidence to support these uses.
NatMed
Chromium
Chromium is an essential trace mineral. There are two forms: trivalent chromium, which is safe for humans, and hexavalent chromium, which is a toxin. Trivalent chromium is found in foods and supplements. It might help keep blood sugar levels normal by improving the way the body uses insulin. People use chromium for chromium deficiency. It is also used for diabetes, high cholesterol, athletic performance, bipolar disorder, and many other purposes, but there is no good scientific evidence to support most of these uses. This topic only covers trivalent chromium, not hexavalent chromium.
NatMed
Danshen
Danshen (Salvia bowleyana) is a root commonly used in Traditional Chinese Medicine (TCM). It is often combined with other herbs, such as Panax notoginseng. Over 35 formulations used in TCM contain danshen. Chemicals in danshen might help with blood thinning. They might also help widen blood vessels, which can improve circulation. People use danshen for heart disease, high cholesterol, high blood pressure, stroke, wound healing, and many other conditions, but there is no good scientific evidence to support these uses. Danshen is sometimes called Chinese red sage, Chinese sage, red root safe, and red Sage. Don't confuse this with sage. These are not the same.
NatMed
Black Horehound
Black horehound is a plant. The parts that grow above the ground are used to make medicine. People use black horehound for conditions such as nausea, vomiting, spasms, cough, infection of the intestines by parasites, and many others, but there is no good scientific evidence to support these uses. Don't confuse black horehound with white horehound.
NatMed
Vitamin D
Vitamin D is an essential vitamin that helps regulate calcium and phosphorus in the body. It also plays a role in maintaining proper bone structure. There are different forms of vitamin D, including ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). Vitamin D is found in fish, eggs, and fortified milk. It's also made in the skin when exposed to sunlight. During periods of sunlight, vitamin D is stored in fat and then released when sunlight is not available. Vitamin D supplements are commonly used to treat and prevent vitamin D deficiency, for weak and brittle bones, cavities, psoriasis, and hay fever. People also use vitamin D for asthma, cancer, kidney disease, lung disease, infertility and many other conditions, but there's no good scientific evidence to support many of these uses. It is important to maintain healthy levels of vitamin D. This can be done by taking 400-1000 IU of vitamin D daily or spending 15-30 minutes in the sun each day. People who don't get enough sun and people who are 65 years or older are at a higher risk for vitamin D deficiency.
NatMed
Hemlock Water Dropwort
Hemlock water dropwort is a plant. The root is used to make medicine. Be careful not to confuse hemlock water dropwort with similar sounding plants such as water hemlock and hemlock. Also be careful not to mistake the extremely poisonous hemlock water dropwort with other similar looking plants, such as wild parsnip, radish, sweet flag, or pignut. Hemlock water dropwort is used for pimples, rashes, and other conditions, but there is no good scientific evidence to support these uses. Using hemlock water dropwort can also be unsafe.
NatMed
Vitamin B12
Vitamin B12 is an essential vitamin found in foods such as meat, fish, and dairy. It can also be made in a lab and is often taken with other B vitamins. Vitamin B12 is required for the function and development of many parts of the body, including the brain, nerves, and blood cells. Methylcobalamin is the active form of vitamin B12. Cyanocobalamin, which must be processed by the body into the active form, is the most common type used in supplements. People commonly use vitamin B12 for vitamin B12 deficiency, cyanide poisoning, and high levels of homocysteine in the blood. It is also used for canker sores, cataracts, Alzheimer disease, osteoporosis, fatigue, and many other conditions, but there is no good scientific evidence to support most of these other uses.
NatMed
Red Yeast Rice
Red yeast rice is the product of rice fermented with a type of yeast called Monascus purpureus. It contains monacolin K, which is identical to a statin drug. Red yeast rice contains ten different chemicals known as monacolins. These chemicals affect cholesterol levels. Monacolin K, which is the same as the drug lovastatin, is the most abundant in red yeast rice. Because of this, it has many of the same effects and precautions as the statin drug. People most commonly use red yeast rice for high levels of cholesterol and other fats in the blood. It is also used for heart attack, high blood pressure, heart disease, diabetes, cancer, and many other conditions, but there is no good scientific evidence to support many of these other uses. The US FDA considers red yeast rice products that contain significant amounts of statin-like ingredients to be illegal, unapproved drugs. But many of these products are still available. Red yeast rice products do not always contain consistent amounts of statins, which can change their effects on health.
NatMed
Niacin
Niacin is a form of vitamin B3 made in the body from tryptophan. It's found in many foods including meat, fish, milk, eggs, green vegetables, and cereals. Niacin is required for the proper function of fats and sugars in the body and to maintain healthy cells. At high doses, niacin might help people with heart disease because of its effects on blood clotting. It might also improve levels of fats called triglycerides in the blood. Prescription forms of niacin are approved by the US FDA for abnormal cholesterol levels and for preventing vitamin B3 deficiency and related conditions such as pellagra. People use niacin supplements for metabolic syndrome, heart disease, cataracts, high blood pressure, and many other conditions, but there is no good scientific evidence to support most of these other uses. Do not confuse niacin with NADH, niacinamide, inositol nicotinate, IP-6, or tryptophan. These are not the same.
NatMed
Blue-Green Algae
Blue-green algae are a group of bacteria. They can be used as a source of protein, but contain no more protein than meat or milk. Blue-green algae produce blue-green colored pigments and are high in protein, iron, and other minerals. They grow in saltwater and some large freshwater lakes. They have been used for food for several centuries in Mexico and some African countries. In the US, they've been sold in supplements since the late 1970s. People use blue-green algae for treating high blood pressure and as a protein supplement. It's also used for high levels of cholesterol or other fats (lipids) in the blood, diabetes, obesity, and many other conditions. But there is no good scientific evidence to support these other uses. Some blue-green algae products are grown under controlled conditions. Others are grown in a natural setting, where they're more likely to be contaminated. Only use products that have been tested and are free of contaminants such as heavy metals, liver toxins called microcystins, and harmful bacteria. Don't confuse blue-green algae with other algaes, like Ascophyllum nodosum, Ecklonia cava, Fucus Vesiculosis, or Laminaria.
NatMed
Kousso
Kousso is a plant. The leaves, fruit, and flowers are used to make medicine. Despite safety concerns, people take kousso for diabetes, cancer, and to get rid of tapeworms, but there is no good scientific evidence to support these uses.
NatMed
Jimson Weed
Jimson weed (Datura stramonium) is a plant. Despite serious safety concerns, the leaves and seeds are sometimes used to make medicine and to cause hallucinations. Jimson weed contains dangerous chemicals such as atropine, hyoscyamine, and scopolamine. These chemicals can cause serious adverse effects, including death. Despite serious safety concerns, people sometimes use jimson weed for asthma, cough, flu (influenza), and many other conditions, but there is no good scientific evidence to support these uses. Some people also use it as a recreational drug to cause hallucinations and a heightened sense of well-being (euphoria).
NatMed
Horsemint
Horsemint (Monarda punctata) is an herb that has a bitter taste and a smell similar to thyme. The leaves are sometimes used to make medicine. People use horsemint for digestion problems, menstrual cramps (dysmenorrhea), and many other purposes, but there is no good scientific evidence to support any use.
NatMed
Chicory
Chicory (Cichorium intybus) is an herb native to Europe and Asia. It's also grown in the United States. Chicory root contains inulin, a starchy substance. Chicory root has a mild laxative effect and decreases swelling. Chicory is also a rich source of beta-carotene. People use chicory for liver and heart health, constipation, indigestion, high blood pressure, and many other conditions, but there is no good scientific evidence to support these uses. Don't confuse chicory with inulin. Inulin is a compound found in chicory, but they are not the same thing.
NatMed
Guar Gum
Guar gum is a gel-forming fiber from the seed of the guar plant (Cyamopsis tetragonoloba). It's used to thicken foods and is also used as a dietary supplement. Guar gum helps normalize the moisture content of the stool, absorbing excess liquid in those with diarrhea, and softening the stool in those with constipation. It also might help decrease the amount of cholesterol and sugar that is absorbed in the gut. People use guar gum for constipation, diarrhea, irritable bowel syndrome (IBS), high cholesterol, and high blood pressure. It is also used for obesity, diabetes, and many other conditions, but there is no good scientific evidence to support these other uses. Don't confuse guar gum with guarana or guarumo. These are not the same. br/>
NatMed
European Mistletoe
European mistletoe (Viscum album) is a plant that grows on several different trees throughout the world. The berry, leaf, and stem are used as medicine. European mistletoe contains chemicals that might stimulate the immune system and kill certain cancer cells, but it's not clear if these effects occur in the human body. People sometimes use European mistletoe for various types of cancer, including bladder cancer, breast cancer, lung cancer, and many other conditions, but there is no good scientific evidence to support these uses. Most research has evaluated European mistletoe injections given by a healthcare provider. There is very little research on the use of European mistletoe taken by mouth.
NatMed
Sundew
Sundew are plants that catch insects using their sticky leaves. Dried sundew is sometimes used to make medicine. People take sundew for various breathing problems including bronchitis, asthma, whooping cough (pertussis), cancer, and many other conditions, but there is no good scientific evidence to support these uses.
NatMed
Medium Chain Triglycerides (MCTs)
Medium chain triglycerides (MCTs) are fat molecules usually made from coconut and palm kernel oils. Typical dietary fats are long-chain triglycerides. MCTs are a fat source for people who cannot tolerate other types of fats. These fats might also improve weight loss because the body can more easily break them down into molecules called ketone bodies. These ketone bodies can be used for energy. People use MCTs for involuntary weight loss called cachexia or wasting syndrome. MCTs are also used for obesity, seizures, athletic performance, Alzheimer disease, and many other conditions, but there is no good scientific evidence to support these other uses.