Mega boost vitamin information index Herb/Vitamin Page

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Herb/Vitamin Page
Spirulina 2
Vitamin C 4

Brewers Yeast 6

Beta-Carotene 7

Garlic 8
Ginco 14

Lecithin 19
Vitamin B3 20
Depanthenic Acid 25
Vitamin B6 25
Vitamin B12 25
Zinc 26
Echinacea 27
Elderberry 30
Propolis 34
Golden Seal 38
Parsley 38
Valerian 40


Be aware that the U.S. Food and Drug Administration does not strictly regulate herbs and dietary supplements. There is no guarantee of strength, purity or safety of products containing or claiming to contain spirulina. Decisions to use herbs or supplements should be carefully considered. Individuals using prescription drugs should discuss taking herbs or supplements with their pharmacist or health care provider before starting.


Unproven Uses

Potential Dangers





The term spirulina refers to a large number of cyanobacteria, or blue-green algae. Scientists have studied spirulina for the following health problems:

High cholesterol

Several studies suggest that taking spirulina by mouth may lower blood cholesterol. However, these studies have been small, low quality and not fully convincing. Better studies are needed before spirulina can be recommended.


One study found that spirulina lowers blood sugar levels in people with diabetes. However, this study was small and had flaws. More research is needed before spirulina can be recommended to lower blood sugar levels.

Weight loss

One study evaluated spirulina for weight loss. However, spirulina did not appear to have any additional weight loss benefits over placebo (sugar pill). At this time, there is no evidence to support the use of spirulina for losing weight.

Mouth cancer (oral leukoplakia)

Spirulina has been studied as a treatment for lesions in the mouth that may turn into cancer. Although evidence from one study suggests that spirulina may produce a remission of existing mouth lesions, this study had flaws and was conducted for a short time. Further studies are needed before spirulina can be recommended as a treatment for mouth cancer.

Chronic viral hepatitis

Preliminary study of spirulina for chronic viral hepatitis shows negative results.


Spirulina has been studied as a food supplement in infant malnutrition. Spirulina does not seem to give added benefit over traditional renutritions, is more costly, and is not recommended.

Unproven Uses

Spirulina has been suggested for many other uses, based on tradition or on scientific theories. However, these uses have not been thoroughly studied in humans, and there is limited scientific evidence about safety or effectiveness. Some of these suggested uses are for conditions that are potentially very serious and even life-threatening. You should consult with a health care provider before using spirulina for any unproven use.

Atherosclerosis (clogged arteries)
Attention deficit hyperactivity disorder
Autoimmune disorders
Bowel health
Brain damage
Energy stimulant
Gynecologic disorders
Hair loss

Heart disease
High blood pressure
Immune enhancement
Infectious diseases
Iron deficiency
Kidney disease
Lead-induced organ damage
Liver disease
Memory enhancement
Mood stimulant
Obstetric problems
Premenstrual syndrome
Radiation sickness
Radiation-induced damage
Selenium deficiency
Skin disorders
Sodium oxalate-induced nephroxicity (kidney damage)
Stomach ulcers
Vitamin or nutrient depletion
Wound healing

Potential Dangers


People with allergies to spirulina, blue-green algae or any of their constituents should avoid products containing spirulina.

Side Effects

Few side effects have been reported from spirulina if used at recommended doses. The most common complaints include headache, muscle pain, flushing and sweating. Skin reactions have been reported. In theory, spirulina may contain phenylalanine. It is best for individuals diagnosed with phenylketonuria to avoid spirulina. Contamination of blue-green algae with heavy metals is possible, especially in species that are often harvested in uncontrolled settings (for example, Anabaena, Aphanizomenon and Microcystis species).

Pregnancy And Breast-Feeding

Spirulina cannot be recommended during pregnancy or breast-feeding because scientific information is limited in this area.


Interactions with drugs, herbs and other supplements have not been thoroughly studied. The interactions listed below have been reported in scientific publications. If you are taking prescription drugs, speak with your health care provider or pharmacist before using herbs or dietary supplements.

Interactions With Drugs

There have been no reliable studies to evaluate spirulina's interactions with prescription drugs.

Interactions With Herbs And Dietary Supplements

In theory, spirulina may increase blood calcium to unsafe levels if calcium supplements are also used. Blue-green algae may contain high levels of vitamin B-12 or vitamin E. Spirulina may increase levels of protein, iron, gamma-linolenic fatty acid, carotenoids, and vitamins B1 and B2.


The doses listed below are based on scientific research, publications or traditional use. Because most herbs and supplements have not been thoroughly studied or monitored, safety and effectiveness may not be proven. Brands may be made differently, with variable ingredients even within the same brand. Combination products often contain small amounts of each ingredient and may not be effective. Appropriate dosing should be discussed with a health care provider before starting therapy; always read the recommendations on a product's label. The dosing for unproven uses should be approached cautiously, because scientific information is limited in these areas.

For High Cholesterol

Adults (Aged 18 Or Older)

Capsules/tablets: A dose of 1.4 grams taken three times daily with meals by mouth has been used.

Children (Younger Than 18)

The dosing and safety of spirulina have not been studied in children, and this supplement is not recommended for any use.

For Diabetes

Adults (Aged 18 Or Older)

Capsules/tablets: A dose of one gram twice daily with meals has been taken by mouth.

For Weight Loss

Adults (Aged 18 Or Older)

Capsules/tablets: A dose of 200 milligrams has been taken three times daily by mouth just before meals.

For Mouth Cancer

Adults (Aged 18 Or Older)

Capsules/tablets: A dose of one gram has been taken daily by mouth.


Although spirulina has been suggested for many conditions, there is not enough evidence to support its use for treatment of any medical condition. It should be avoided in pregnant or breast-feeding women and in children. Spirulina is also best avoided by those with phenylketonuria. Spirulina appears to be well tolerated with few adverse effects when used at recommended doses. Spirulina may have additive effects when taken with certain vitamins. Consult your health care provider immediately if you experience side effects.

Vitamin C Powder

Vitamin C, or ascorbic acid, is a white, crystalline, water-soluble substance found in citrus fruits and green vegetables. As an antioxidant, vitamin C scavenges free radicals in the body and protects tissues from oxidative stress.15-18 Vitamin C also promotes the absorption of iron, while preventing its oxidation.19-21 Vitamin C is a vital cofactor to the formation of collagen, the connective tissue that supports arterial walls, skin, bones, and teeth.22-24*

More vitamin C is contained in the adrenal glands than any other organ in the body and is required at higher levels during times of stress.25-28 Physical stresses on the body such as ingestion of heavy metals,29-34 cigarette smoking,35-38 infections,39-43 extreme temperatures,44-48 and chronic use of certain medications such as aspirin also signal the need for increased intake of vitamin C.49

Along with ascorbic acid, vitamin C also comes in at least two other forms: chemically bonded to minerals as ascorbates, and as the fat-soluble ascorbyl palmitate. Both of these forms are non-acidic.

Supplement Facts

Serving Size 1 rounded teaspoon

Amount Per Serving

Vitamin C

4000 mg

as ascorbic acid (Roche)


This product contains NO sugar, yeast, wheat, gluten, corn, soy or dairy. Contains NO artificial color, sweeteners, flavors or preservatives.

Dosage and Use

One rounded teaspoon daily with meals, or as directed by a healthcare professional.

A prophylactic dosage of 2.5 to 6 grams of various forms of vitamin C daily is recommended.

Up to 15 grams daily may be taken under physician supervision.

Large doses of ascorbic acid or ascorbates and any dose of ascorbyl palmitate should be consumed with meals.

All vitamin C products should be stored away from heat, light, and moisture although this is most important for pure ascorbic acid and ascorbyl palmitate powders.


Ascorbic acid is the acidic form of vitamin C, and even when encapsulated can cause gastric upset or diarrhea for some people. This can often be alleviated by consuming it with meals. Start with a low dose then gradually increase.

If you have a stomach ulcer, use of an antacid, buffering agent, or a buffered form of vitamin C. Calcium carbonate and magnesium oxide are effective antacids. Unbuffered ascorbic acid in the mouth may be harmful to tooth enamel.


Brewers Yeast

Brewer’s yeast is non-leavening with a slightly bitter taste, however if added to food possessing a strong taste it is more tolerable. It is an excellent source of B vitamins, protein and minerals and is an excellent, low-cost food supplement for aging adults and growing developing children. B vitamins, DNA and RNA, and chromium are found in Brewer’s Yeast.

How This Supplement Works in Your Body:

Supplies B vitamins, protein and minerals
Offers bulk to prevent constipation
Good source of enzyme-producing vitamins
Chromium in brewer’s yeast helps regulate sugar metabolism
May reduce risk of high cholesterol in blood
Possible treatment for contact dermatitis
May boost energy level
May reduce risk of prostate cancer


Don’t take if you have:
Intestinal disease

Consult your doctor if you:

Experience severe intestinal upset
Take any medicinal drugs or herbs including aspirin, laxatives, cold and cough remedies, antacids, vitamins, minerals, amino acids, supplements, other prescription or nonprescription drugs
Are diagnosed with osteoporosis


It is advised that no more than 1 to 2 tablespoons be taken per day


It is advised that no more than 1 to 2 tablespoons be taken per day

Infants and Children:

It is hazardous to treat infants and children under 2 with any supplement.

Keep in a cool and dry location away from direct light, but do not freeze.

Keep safely away from children.
Do not keep in bathroom medicine cabinet. Heat and dampness may alter the action of the supplement.


Comparative-toxicity rating is not available from standard references.

Side Effects:

Signs and symptoms: What to do:
Diarrhea : Discontinue use. Call doctor promptly.
Nausea : Discontinue use. Call doctor promptly.


Beta Carotene

Beta Carotene is a Pro-vitamin of Vitamin A, found in green and yellow vegetables and carrots.

Vitamins A & D are fat soluble vitamins whichare stored by the body, transported by lipids and utilized by the body when the physiological need is present.

Vitamin A occurs naturally in two forms, preformed vitamin A and pro vitamin A or Beta Carotene.

It enhances immunity, prevents night blindness and is useful in skin disorders, such as acne. Vitamin A is important in the formation of bones and teeth, aids in fat storage and protects against colds and infections. Vitamin A acts as an anti-oxidant which helps against free radical damage and other diseases. Carotenoids, e.g. beta-carotene are a class of compounds related to vitamin A and act as anti-oxidants. Beta-carotene is converted to vitamin A in the liver.

Garlic (Allium sativum)

  • Evidence

  • Unproven Uses

  • Potential Dangers

  • Interactions

  • Dosing

  • Summary

  • Resources


Scientists have studied garlic for the following health problems:

High cholesterol

A number of studies in humans have examined the effects of garlic on cholesterol levels. Most of these studies have been brief and have included few people. Overall, this research suggests that garlic lowers cholesterol levels a small amount. It is not clear how long its effects may last or what the long-term effects on health may be. In the future, longer studies with more people may provide stronger evidence. It should be noted that research using prescription drugs to lower blood cholesterol levels has shown better results than research using garlic.

High blood pressure

There are a few studies showing that garlic lowers blood pressure. However, these studies have been small, low quality and not fully convincing. Better studies need to be done before garlic can be recommended to treat high blood pressure.

Cardiovascular health

Garlic may have positive effects on health problems that may lead to cardiovascular diseases, such as heart attack or stroke. For example, garlic may lower blood pressure, mildly "thin" the blood (anticoagulate) and reduce cholesterol levels. Laboratory and animal studies report that garlic may prevent atherosclerosis (cholesterol buildup in the arteries). However, there are no high-quality studies showing that garlic promotes cardiovascular health.

Cancer prevention

Several studies suggest that garlic may reduce the risk of developing cancer of the stomach or colon. However, these are only early results, and there are no definitive answers at this time. Studies are being done (many of them in China) to further investigate the use of garlic for cancer. Other cancers under examination include breast, head and neck, lung, prostate and urinary tract cancers.

Infections (bacterial, viral, fungal, other)

In laboratory experiments, garlic has been shown to be effective against bacteria, mycobacteria, viruses and fungi. Small studies have been conducted using garlic for acute viral respiratory infections in children. Other studies have shown that garlic may have some effect on athlete's foot and cryptococcal meningitis. However, few high-quality studies have been done in humans. Therefore, there is not enough information to recommend garlic to treat or prevent infections at this time.

Antiplatelet effects (blood thinning)

The effects of garlic on platelet aggregation have been assessed in several trials in humans. Although these studies have, overall, been of low quality, garlic does appear to possess some platelet-inhibiting properties. Dosing, safety, comparison to other agents, duration of effects, and clinical outcomes are not known, and the potential benefits of using garlic for this purpose are not clear. Because garlic has been associated with several cases of bleeding, therapy should be applied with caution (particularly in patients using other agents that may precipitate bleeding).

Peripheral vascular disease (blocked arteries in the legs), claudication, circulation

Garlic trials suggest modest short-term reductions in total cholesterol and low-density lipoprotein levels with oral garlic supplements. Long-term effects on lipids and atherosclerosis are not clear. There is limited evidence regarding the effects of garlic in patients with peripheral vascular disease or claudication. A small number of studies have explored this issue and reported favorable results, including increased walking distances. However, these studies have, overall, been poorly designed. There is currently insufficient evidence demonstrating effects of garlic on peripheral vascular disease, and further study is needed in this area.

Tick repellant

In early study, self-reports of tick bites were significantly less in people receiving garlic over a sugar pill.

Upper respiratory tract infection

Garlic has a long history of use in the treatment of various infectious agents, including bacteria, fungi, and viruses. Garlic has shown some effectiveness in laboratory experiments. However, there is limited available evidence in humans.


Early study results in animals and humans are mixed. Further research is needed before a conclusion can be drawn.

Stomach ulcers

Several case studies in humans have examined the effects of garlic on Helicobacter pylori infection, which can cause stomach ulcers, and found a lack of benefit.

Unproven Uses

Garlic has been suggested for many other uses, based on tradition or on scientific theories. However, these uses have not been thoroughly studied in humans, and there is limited scientific evidence about safety or effectiveness. Some of these suggested uses are for conditions that are potentially very serious and even life-threatening. You should consult a health care professional before taking garlic for any unproven use.

Abnormal heart rhythms
Age-related memory problems
Amoeba infections
Ascaridiasis (worms in the gut or liver)
Athlete's foot
Atrophic gastritis
Benign breast disease
Bile secretion problems
Bladder cancer
Bloody urine
Breast fibromatosis
Cryptococcal meningitis
Cytomegalovirus infection
Dental pain
Digestive aid
Dysmenorrhea (painful menstruation)
Gastric cancer
Hair growth
Heart rhythm disorders
Hepatopulmonary syndrome

Hormonal effects
Immune system enhancement
Improved digestion
Induction of vomiting
Inflammatory bowel disease
Kidney damage from antibiotics
Kidney problems
Liver cancer
Liver disease
Liver health
Lung disease
Mucous thinning
Muscle spasms
Nephrotic syndrome
Parasites and worms
Peptic ulcer disease
Poor circulation
Premenstrual syndrome
Prostate cancer
Raynaud's disease
Ringworm (Tinea corpori, Tinea cruris)
Sinus decongestant
Snake venom protection
Stomach ache
Stomach acid reduction
Stomach lining protection
Traveler's diarrhea
Urinary tract infections
Vaginal infection
Whooping cough
Yeast infections

Potential Dangers


People with allergies to plants in the Liliaceae family should avoid garlic. There have been multiple cases of asthmatic reactions and allergic skin rashes related to garlic therapy. A severe allergic reaction to garlic was reported in a 23-year-old woman after taking young garlic.

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