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Tag: Immune System

Essential Nutrients That Can Boost the Body’s Immune System

With the abundance in the varieties of vitamin and mineral supplements available in the market, it can be daunting to identify which among them would really be useful in boosting the body’s immune system. This has been made more challenging with the proliferation of unsubstantiated claims and advices online.

While all vitamins and minerals are essential in maintaining good health, several published scientific reviews were able to point out the key vitamins and minerals most studied for the purpose of protecting against infectious diseases.

Vitamin C

Vitamin C is a classic and well-known anti-oxidant. A study done by a team from the Nutrition and Health Research Group, Luxembourg Institute of Health, noted that a daily supplementation of Vitamin C at 700-800 mg per day may reduce the duration of the common cold. Vitamin C supplementation was also found to reduce the occurrence of pneumonia and improve other respiratory conditions.

Vitamin A

Aside from its established role in maintaining a healthy eyesight, Vitamin A may also enhance resistance to infection by promoting an immediate immune response to the invasion of microbes and through activation of natural killer cells. A review published in the Diabetes Metabolic Syndrome Journal reported that children from 2-8 years old, supplementation of Vitamin A had enhanced immune response to influenza virus.

B Vitamins

The role of B vitamins is not only limited to their well-known effects on nerves and brain functions. B vitamins are needed for the processing of the building blocks of proteins to form antibodies that help fight infections. B vitamins are also valuable in times of stress and viral infections.

Vitamin D

In addition to Vitamin D’s recognized role in promoting calcium absorption, studies have shown that Vitamin D may lower the incidence and severity of respiratory viral diseases. Vitamin D also increases antiviral defenses to protect against acute respiratory tract infection.

Vitamin E

Vitamin E is another highly recognized anti-oxidant. It works with Vitamin C to protect the integrity of the cellular defenses against infection and from the damaging effects of free radicals.

Must-have Minerals or Trace Elements

Known to many, low levels of minerals and trace elements in the body is also associated with increased risk of infection. Here are some of the minerals that are considered to strengthen the body’s immune system:


Zinc is a very important mineral that helps the body fight infection. It was found that zinc supplementation can reduce the incidence and duration of pneumonia. Zinc supplementation has also been reported to reduce the duration of common colds from 7.6 days to 4.4 days. It was also shown that there has been twice the number of reported deaths from pneumonia in patients with low zinc levels than the ones with the normal zinc levels in the body.


Aside from its known use for anemia, iron has an important role in the body’s innate immune response. Iron is used by white blood cells to form highly reactive compounds to kill bacteria. It was found that by receiving 3 months of iron supplementation, recurrences of acute respiratory tract infections, urinary tract infections, and gastroenteritis were significantly reduced.


Selenium supplementation has been associated with clinical improvement with viral infection specifically in children. Dietary selenium supplementations were also found to increase cellular immune response through enhanced immune cell proliferation.


Copper, like iron, has a role in innate immune response specifically against invading microbes. Important in antibody production and immunity, copper plays a role in fighting against viral infection by inhibiting the replication of influenza viruses.

Vitamins and minerals may not always be adequate in our usual diet. In this case, the practical solution is to provide vitamin and mineral supplementation. Boosting the immunity by supplementation with key vitamins and minerals can offer protection against various infections including COVID-19. The best advice on proper nutrition is to always consult your doctor.


Iddir M, Brito A, Dingeo G, et al. Strengthening the Immune System and Reducing Inflammation and Oxidative Stress through Diet and Nutrition: Considerations During the COVID-19 Crisis. Nutrients.

Jayawardena R, Sooriyaarachchi P, Chourdakis M, Jeewandara C, Ranasinghe P. Enhancing Immunity in Viral Infections, with Special Emphasis on COVID-19: A review. Diabetes Metab Syndr. 

Derbyshire E, Delange J COVID-19: Is There a Role for Immunonutrition, Particularly in the over 65s? BMJ Nutrition, Prevention & Health.

Michienzi SM, Badowski ME. Can vitamins and/or supplements Provide Hope Against Coronavirus?. Drugs Context. 

Health tipsImmune DefenseImmunity

Sodium Ascorbate: The Benefits of a Non-Acidic Vitamin C

What is Vitamin C?

Vitamin C is a widely used water-soluble vitamin known to play a vital role as in a variety of body functions. It is one of the essential nutrients needed for building and strengthening body tissues owing to its action in the formation of a firm collagen, the cement-like substance that binds the body cells together to form strong tissues.  It is therefore important in the formation of healthy skin, blood vessel walls, cartilage, strong bones and teeth, as well as in promoting faster healing of wounds.

Being touted as the body’s “prime” immune system boosting nutrient, vitamin C is popularly known for its protective function against stress and certain diseases such as anemia, immune system deficiencies, asthma, viral infections and cardiovascular illnesses.

Vitamin C is also reported to promote cardiovascular health and helps lower blood cholesterol.

As a potent antioxidant, Vitamin C strengthens the immune system and increases body resistance to stress and infections.  Specifically, Vitamin C protects the body’s soldiers, the white blood cells, from the damaging effects of free radicals with its antioxidative properties. Vitamin C stimulates the white blood cells in clearing away infectious microbes. 

Though Vitamin C does not offer a cure for diseases such as the common cold, several studies suggest that vitamin C helps in alleviating the disturbing symptoms of cold and in shortening its duration.  This can reduce the risk for dreaded lung infections such as pneumonia.

Ascorbic acid and Sodium ascorbate, are they the same?

Many are quite reluctant in taking ascorbic acid or the so- called ordinary or “acidic” Vitamin C because of its potential effect in irritating the lining of the stomach of susceptible individuals. Thus, vitamin C is buffered or neutralized with the mineral sodium as the salt of vitamin C to become sodium ascorbate. Labelled as the non-acidic vitamin C, sodium ascorbate is in alkaline or buffered form, therefore it will cause less stomach irritation as compared with ascorbic acid.

Sodium ascorbate delivers the same benefits of vitamin C to the human body without causing the possible gastric irritating effects of ascorbic acid.

Since sodium ascorbate is less likely associated with hyperacidity, it is commonly recommended to individuals who experience gastrointestinal complaints such as heartburn, flatulence, nausea and diarrhea.

How safe is Vitamin C?

Despite its sodium content, Sodium ascorbate in recommended doses is safe for hypertensive individuals. Adults, especially those with cardiovascular disease, on a low-salt diet are advised to limit their total daily sodium intake to less than 1,500 mg/day.

Sodium ascorbate contains only 10% – 11% sodium.  Approximately, 1000 mg of sodium ascorbate, equivalent to two 500mg capsules, provides 889 mg of vitamin C and only 111 mg of sodium.  1-2 capsule(s) of 500 mg of sodium ascorbate taken daily will only give approximately 111 mg sodium.

Vitamin C is usually well tolerated and generally no adverse reactions are expected when it is taken at recommended doses. Vitamin C may cause diarrhea if taken in large amounts.

Vitamin C should be given with caution in patients with hyperoxaluria because large amounts may lead to the formation of calcium oxalate stones in the kidney. Urinary stone formers appear to be at higher risk for calculi if individuals take large doses of vitamin C daily. 

Large doses of vitamin C may also result in a false positive glucose test in the urine and may interfere with the diagnosis of diabetes mellitus.


Vitamin C. Oregon State University Linus Pauling Institute Micronutrient Information Center.

Gombart AF, Pierre A, Maggini S. A Review of Micronutrients and the Immune System-Working in Harmony to Reduce the Risk of Infection. Immune DefenseVitamin CVitamins

Polynerv E with Lecithin Tablet

Nothing but the best for your health—22 Nutrients in every tablet of a Premium Dietary Supplement.

Polynerv E with Lecithin is specially formulated to meet the daily needs of the demanding lifestyle. It offers a wide array of high-quality vitamins, minerals and special ingredients such as the potent cardioprotectors, Coenzyme Q10, Vitamin E and Omega 3 Fatty Acids, among others.

Get all these benefits and more from each tablet of Polynerv E with Lecithin:

•           Immune System boosters, such as Vitamins A & E, Zinc, Selenium, Omega 3, to strengthen your body’s natural defense in preventing and fighting off infection.

•           Antioxidants, such as CoQ10 and Vitamin E, to help battle the harmful effects of free radicals.

•           Energy Boosters, B Vitamins and Ginseng, to boost both your mental and physical stamina.

•           Cardioprotecting nutrients, like CoQ10, Ginseng, and Omega-3 Fatty Acids, to support a healthy heart and blood circulation.

•           Brain-Boosting and Nerve-Nourishing nutrients, such as B vitamins, Lecithin and Korean Ginseng.

•           Healthy Eyesight and Glowing Skin, from Vitamins A and E, and lutein, beta-carotene and lycopene.

Nutrients that Support Immune Function

Getting enough nutrients from food and supplements is vital for the health and function of the immune cells. These nutrients help the immune system in several ways: working as an antioxidant to protect healthy cells, supporting growth and activity of immune cells, and producing antibodies.

Studies show that those who are poorly nourished are at a greater risk of bacterial, viral, and other infections.

Learn more about how key nutrients support immune function.

1. Vitamin C – stimulates the formation of antibodies and the activity of white blood cells

2. Iron – a component of enzymes critical for immune cell function.

3. Vitamin A – helps protect against infections by keeping skin and other body tissues healthy.

4. Vitamin D – helps regulate antimicrobial proteins that can directly kill pathogens.

5. Vitamin E – protects the integrity of cell membranes.

6. Zinc – needed for wound healing and supports immune response.


Support your immune function with good nutrition, by Mayo Clinic.

Nutrition and Immunity, Harvard Education