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Jarrow Formulas Extra Strength Methyl B-12 1000mcg, Dietary Supplement for Cellular Energy Production and Brain Health Support, 100 Lemon-Flavored Chewable Tablets, 100 Day Supply
Brand | Jarrow Formulas |
Item Form | Lozenges |
Primary Supplement Type | Vitamin-b |
Diet Type | Vegetarian, Gluten Free, Vegan |
Flavor | Lemon |
About this item
- Cellular Energy Production and Brain Health support supplement*: Contains one 100 count bottle of Jarrow Formulas Extra Strength Methyl B-12 1000mcg Chewable Tablets for a 100-day supply
- Easy-to-take, lemon-flavored chewable tablets to help maintain brain health, and support sleep*
- Dietary supplement with Methyl B-12, the active form of Vitamin B12, which is delivered more effectively to support your body's natural cellular energy production*
- Suggested Use: Adults, dissolve in the mouth or chew one tablet per day or as directed by your qualified healthcare professional
- *These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease.
- Lemon-Flavored Chewable Vitamin B12 Active Coenzyme Form Promotes Healthy Homocysteine Levels* 1000 Micrograms per Lozenge Neurotransmitter & Neuron Support*
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- Jarrow Formulas Ultra Strength Methyl B-12 5000 mcg & Methyl Folate 800 mcg + P-5-P, Dietary Supplement for Cellular Energy Metabolism and Cardiovascular Support, 60 Chewable Tablets, 60 Day SupplyAmazon's Choicein Vitamin B12 SupplementsFREE Shipping on orders over $35 shipped by AmazonGet it as soon as Tuesday, Mar 26
From the manufacturer
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Our formulations are carefully crafted and informed by strong scientific research. We are 100% dedicated to getting every formula right. |
Cellular energy production is essential for cell to function properly. Jarrow Formulas energy supplements support cellular energy production and the body's conversion of foods into energy.* |
We evaluate ingredient purity and only work with suppliers who follow Current Good Manufacturing Practices (cGMP) for our capsules, tablets, softgels and powder formulations. |
Maximum Strength Methyl B-12 | Extra Strength Methyl B-12 & Methyl Folate | QH-absorb + PQQ | Energy Optimizer | Extra Strength Metyl Folate | Glucose Optimizer | |
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Customer Reviews |
4.6 out of 5 stars
16,487
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4.6 out of 5 stars
6,788
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4.6 out of 5 stars
911
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4.4 out of 5 stars
7
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4.7 out of 5 stars
5,071
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Primary Benefit | Cellular Energy Production* | Cellular Energy Metabolism & Cardiovascular Support* | Dual Antioxidant Support for Mitochondrial Biogenesis* | Supports Energy & Endurance for Everyday Vitality* | A Highly Bioactive Form of Folate* | Supports Glucose Metabolism & Cellular Energy* |
Key Ingredients | 5000 mcg Vitamin B-12 | Vitamin B-6, Methyl Folate, Methyl B-12 | Ubiquinol, PQQ | Proprietary Mushroom Blend, Sensoril Ashwagandha | 400 mcg Methyl Folate | Vitamins C, E, B-6, B-12, Magnesium, Biotin & Pantothenic Acid |
Includes B Vitamin | ✓ | ✓ | ✓ | ✓ | ||
Includes Methyl Folate | ✓ | ✓ | ||||
Caffeine-Free | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
No Major Allergens | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Form Type | Chewable Tablet | Chewable Tablet | Softgel | Veggie Capsule | Veggie Capsule | Tablet |
Size Options | 60 & 90 | 100 | 30 & 60 | 90 | 60 | 120 |
Product Description
Jarrow Formulas Extra Strength Methyl B-12 1000mcg Chewable Tablets make it easy for you to get daily cellular energy production, sleep and brain health support.* Made with high-quality, non-GMO ingredients, this vegan and gluten free dietary supplement contains no wheat, soybeans, dairy, egg, fish, shellfish, peanuts, tree nuts or sesame. Methyl B-12 is the biologically active form of Vitamin B12, which is naturally recognized by the body and delivered more effectively to your cells to support your body�s natural cellular energy production.* Perfect for people with Vitamin B12 deficiency, vegetarians, vegans, and people over 50, these lemon-flavored chewable tablets deliver 1000 mcg of Methyl B-12 to help maintain brain health and support sleep.*�Suggested Use: Adults, dissolve in the mouth or chew one tablet per day or as directed by your qualified healthcare professional. Informed by strong scientific research, Jarrow Formulas products are carefully crafted to ensure you get the benefit of each and every vitamin, mineral and supplement.
Product details
- Is Discontinued By Manufacturer : Yes
- Product Dimensions : 1.84 x 1.84 x 3.23 inches; 2.82 ounces
- Item model number : B12
- Date First Available : September 21, 2004
- Manufacturer : Jarrow Formulas
- ASIN : B002FJW3ZY
- Country of Origin : USA
- Best Sellers Rank: #6,768 in Health & Household (See Top 100 in Health & Household)
- #41 in Vitamin B12 Supplements
- #658 in Diet & Sports Nutrition
- #1,033 in Sales & Deals
- Customer Reviews:
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This Item Jarrow Formulas Extra Strength Methyl B-12 1000mcg, Dietary Supplement for Cellular Energy Production and Brain Health Support, 100 Lemon-Flavored Chewable Tablets, 100 Day Supply | Recommendations | dummy | dummy | dummy | dummy | |
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Price | -25% $10.49$10.49 List: $13.99 | -15% $16.49$16.49 List: $19.40 | -20% $17.24$17.24 List: $21.50 | -46% $18.80$18.80 List: $34.99 | $35.50$35.50 | $21.99$21.99 |
Price Per Unit | $0.10 / Count | $0.04 / Count | $0.17 / Count | $0.31 / Count | $0.59 / Count | $0.37 / Count |
Delivery | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it Mar 27 - 28 | Get it as soon as Tuesday, Mar 26 |
Customer Ratings | ||||||
Value for money | 4.6 | 4.5 | 4.5 | 4.3 | 4.4 | 4.6 |
Absorbency | 4.5 | 4.6 | 4.5 | 4.5 | 5.0 | 4.5 |
Easy to swallow | 4.5 | 4.6 | 4.5 | 4.6 | 4.4 | 4.6 |
Flavor | 4.4 | 4.4 | 4.3 | 4.6 | 4.7 | 4.3 |
Sold By | Amazon.com | Carlyle | Amazon.com | Amazon.com | witty&shop | Triquetra Health |
primary supplement | Vitamin-b | Vitamin B12 | Vitamin B12, Vitamin B6, Vitamin B9 | Vitamin B12 | Vitamin-b | Vitamin B12 |
form | Lozenges | Tablet | Tablet | Chewable | Lozenges,Chewables | Capsule |
unit count | 100 | 400 | 100 | 60 | 60 | 60 |
flavor | Lemon | Berry | Lemon | Cherry | Cherry | Unflavored |
target gender | unisex | unisex | unisex | unisex | unisex | unisex |
weight | 80 grams | 3.84 ounces | 0.2 pounds | 1.7 ounces | — | 0 pounds |
specific uses | Brain | — | Metabolism, Energy | Brain | Brain | Brain |
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Jarrow Formulas Methyl B-12 Energy
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Jarrow Formulas Methyl B-12 Vegan
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Important information
Safety Information
If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your health care practitioner before using this product.
Indications
Protects Brain Cells and Nerve Tissue*
Ingredients
vitamin B12 (as methylcobalamin), xylitol, cellulose, stearic acid (vegetable source), natural lemon flavor, magnesium stearate (vegetable source), citric acid and silicon dioxide
Directions
Dissolve in mouth or chew 1 tablet per day or as directed by your qualified healthcare professional.
Legal Disclaimer
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the vitamin easy to take and appreciate the pleasant taste. They also say it helps with nerve pain and numbness. Customers say it gives a great boost of energy. They mention the price is great for the quality.
AI-generated from the text of customer reviews
Customers like the taste of the vitamin. They say it has a pleasant taste, is chewable, and has slightly sweet flavor.
"...These have a lemon flavour, which is sweet and not bitter. I did not feel any after-effects or discomfort from the tablets...." Read more
"...It tastes good and gives you a lot of energy" Read more
"...Jarrow Formulas is better if you want to enjoy the extremely delicious taste of a much larger tablet (lozenge) at a slightly lower price per..." Read more
"...The taste is good and I chew one tablet during breakfast. I continuously buy it. I recommend this product." Read more
Customers are satisfied with the quality of the vitamin B12. They mention that it's effective at its purpose, and great for overall well being of the body. Customers also appreciate the consistent production qualities and the fact that it is the highest quality of Vitamin B12 available.
"...It plays vital roles in fat and protein metabolism, hemoglobin and red blood cell production, DNA synthesis and nerve maintenance and repair...." Read more
"...It's so easy to take, enough for my needs. I really appreciate the quality, especially that it is not a synthetic vitamin like other B12 brands...." Read more
"...Their products are quality, and third party tested and researched...." Read more
"My dr told me to get this specific one. Works great. Every time she runs my lab my B12 is up." Read more
Customers appreciate the value of the vitamin. They say it is an economical, affordable, and dissolveable B12.
"...This is the “good stuff” at a price lower than most the rest." Read more
"...(3)Both products are economically priced but the Jarrow Formulas product is 11.78% cheaper per tablet than the Source Naturals product...." Read more
"This is the best Methyl B-12 that I’ve tried. It tastes good, is reasonably priced, and, while it is always hard to attribute direct benefits, I can..." Read more
"...First of all, they were surprisingly affordable supplements. Yay!Second, they arrived quickly. Double yay!..." Read more
Customers say the flavored Yarrow lozenges give a great boost of energy. They also say it raises their B12 level and they feel more energetic everyday. They mention that within one dose they feel an instant mood boost and energy jolt, and have an increased interest, desire, and ability to get a. They say the mg dose in these tablets is very potent, so they consume only a portion.
"...It tastes good and gives you a lot of energy" Read more
"This brand and dosage was recommended by my nutritionist to give me more energy. It works! Note: Take with vitamin C for better absorption." Read more
"I loved them. They raised my b12 level and I felt more energetic everyday. Going to order more." Read more
"...later on in the day for a "pick me up" and they truly DO give a great boost of energy!! I highly recommend Jarrow" Read more
Customers find the product easy to take, consume, and assimilate into the body. They say it has a pleasant lemon taste and is simple to use.
"I am happy to have found this. It's so easy to take, enough for my needs...." Read more
"Works as it should. Pleasant tasting and easy to use." Read more
"...This supplement contains the form of B12 that is most easily assimilated by the body. The flavor is very, very mild in my opinion...." Read more
"...The taste is nice, not overwhelming and not like a kid product...." Read more
Customers like the pain relief provided by the supplement. They say it gives them more energy, helps with nerve pain and numbness, and improves symptoms. Some customers also mention that the product is easy to take, has a mild taste, and does not upset the stomach.
"...form of b12 and after about a week on it I am noticing less cramping in my legs...." Read more
"...It calms my nerves and makes me feel so much better immediately. Highly recommended!!!" Read more
"...After taking it daily for over a month, all of my symptoms are resolved. I'm energetic and smiling again. My anxiety has seen a modest reduction...." Read more
"...These do the job and I have been feeling great. My blood test shows my B12 problem is gone. Very pleased with this product. Thanks." Read more
Customers are mixed about the size of the tablet. Some mention that it's not bad, a little larger than a pencil eraser, while others say that it is too huge and takes too long to dissolve under the tongue.
"...I felt they are little too big for me to keep under the tongue, so I keep it in the mouth and it gets dissolved just fine...." Read more
"...On to the supplement itself: it's a small pill and chewable. I'm not a big fan of chewable, but I do chew it and it's like a mild Sweet Tart candy...." Read more
"...The lemon flavor is mild. I do wish the tablets were smaller, but as long as it helps my energy level, I am content...." Read more
"...NOW, they are growing larger, much larger, and also in bright contrast to the rest of the nail, and Again, are starting to show in the other..." Read more
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VITAMIN B12 DEFICIENCY
Vitamin B12 is important for functioning of brain and nervous system. It plays vital roles in fat and protein metabolism, hemoglobin and red blood cell production, DNA synthesis and nerve maintenance and repair. Some of the symptoms of vitamin B12 deficiency include fatigue, lethargy, depression, poor memory, breathlessness, headaches, and pale skin. If ignored for too long, Vitamin B12 deficiency can cause severe and permanent damage. Since Vitamin B12 effects the brain function it can also effect the mood and low levels of vitamin B12 is also linked to depression and paranoia.
DOSAGE
Recommended Dietary allowance for Vitamin B12 varies with age, whether person is pregnant, or nursing, if there is a condition that needs to be treated or if a person is healthy. Usually for healthy adults the dosage is considered to be 2.4-4.0 mcg per day irrespective of which type of B12 (cobalamin) is being taken. However, for people having vitamin B-12 deficiency the doctor may prescribe higher doses. Since Vitamin B12 is water soluble, so excess Vitamin B12 is removed by the body (and doses upto 500-1000 mcg won't cause side-effects). There are no Upper intake levels suggested, however, if a person ends up in taking extremely high amounts of B-12 body will start using more water to purge the excess B12 out of body and may start showing the symptoms of overdose such as flushing of the skin, increased thirst, excessive urination and diarrhea.
ARE THESE PILLS VEGAN
The information on the bottle says that these are vegan and does not contain wheat, glutten, soybeans, dairy, egg, fish/shellfish, peanuts/tree nuts. Usually Vitamin B-12 is synthesized by bacteria found in animals, so B-12 is found in sources such as seafood, beef, poultry, eggs and milk or other dairy products. For people following strictly vegetarian diet, they might have Vitamin b12 deficiency and these pills seems to be a good fit for them.
Also, while reading up on these pills I came across some interesting information on several web-sites about these vitamins and why are they named so.
WHY IS VITAMIN B NAMED SO
Vitamin B has an interesting history. In the 19th and early 20th century scientists were looking into a disease called beriberi (whose symptoms included weakness and loss of feeling in the feet and legs, edema of the trunk, difficulty in breathing etc.) Several researchers had observed that this disease was related to rice diet. It wasn't until Adolphe Vorderman (a medical inspector for prison) noticed that prisoners who had a diet of mostly brown rice had significantly less cases of beriberi than the prisoners who had diet of mostly white rice. After this several scientists were trying to separate the compound in brown rice that was responsible for preventing beriberi.
A polish scientist named "Casimir Funk" claimed to have separated that compound and named it vitamine by combining vital amines (because it contained an amino group.) Though it was realized later that he was not completely successful in isolating the active compound from rice.It was American biochemist "Elmer McCollum" who was successful in doing that. Since they did not understood the complete chemical composition of the compound yet, so compound was give a generic name "factor B". He had also named another compound he had discovered as "factor A". However, scientific community needed a batter names than water soluble factor B (or fat-soluble factor A) so they adapted Funk's nomenclature and naming them as Vitamin A, Vitamin B. The "e" at the end of vitamine was removed because not all compound contained animo groups and one of the rules of nomenclature mentioned naming "a neutral substance of undefined composition" ending in "in". So the name Vitamin was adopted by scientific community and most of the new compounds were named similarly e.g. Vitamin C, Vitamin D until their complete chemical composition could be determined (some exception exists such as Vitamin K which was derived from German word Koagulation (coagulation) since this compound was a prerequisite for blood coagulation)
Though even after determining the complete chemical composition of Vitamins, we still call them as Vitamin because it is easier to remember them instead of the chemical term.
WHY IS VITAMIN B12 NAMED SO
After further research it was found that what was earlier thought to be single vitamin was in-fact chemically distinct compounds that occurred in the food together. All these compounds were given numbers e.g. Vitamin B9 is folic acid. Vitamin B12 is a compound that contains the essential mineral cobalt.
There were several Vitamin B discovered, however it was late found that only few of the Vitamin Bs are actual vital: Vitamin B1, B2, B3, B5, B6, B7, B9, and B12. Supplements that contain all these are sold as Vitamin B complex.
WHAT IS METHYL B12
Vitamin B12 is also called cobalamin, which refers to compound that have cobal ion in the middle. Depending upon to which component cobalt is attached to it is named differently (Cyanocobalamin, Hydroxocobalamin, Adenosylcobalamin, and Methylcobalamin) Methylcobalamin contains cobalt joined with Methyl
IS METHYL B12 SPECIAL
The bottle mentions that Methyl B12 is superior form of B12. I am not sure of if the body gets more benefits from this form of B12, but Adenosylcobalamin, and Methylcobalamin are the forms of B12 that naturally occur in the body. So the body doesn't have to covert this form of vitamin B12 and can be absorbed easily.
Reviewed in the United States on April 5, 2018
VITAMIN B12 DEFICIENCY
Vitamin B12 is important for functioning of brain and nervous system. It plays vital roles in fat and protein metabolism, hemoglobin and red blood cell production, DNA synthesis and nerve maintenance and repair. Some of the symptoms of vitamin B12 deficiency include fatigue, lethargy, depression, poor memory, breathlessness, headaches, and pale skin. If ignored for too long, Vitamin B12 deficiency can cause severe and permanent damage. Since Vitamin B12 effects the brain function it can also effect the mood and low levels of vitamin B12 is also linked to depression and paranoia.
DOSAGE
Recommended Dietary allowance for Vitamin B12 varies with age, whether person is pregnant, or nursing, if there is a condition that needs to be treated or if a person is healthy. Usually for healthy adults the dosage is considered to be 2.4-4.0 mcg per day irrespective of which type of B12 (cobalamin) is being taken. However, for people having vitamin B-12 deficiency the doctor may prescribe higher doses. Since Vitamin B12 is water soluble, so excess Vitamin B12 is removed by the body (and doses upto 500-1000 mcg won't cause side-effects). There are no Upper intake levels suggested, however, if a person ends up in taking extremely high amounts of B-12 body will start using more water to purge the excess B12 out of body and may start showing the symptoms of overdose such as flushing of the skin, increased thirst, excessive urination and diarrhea.
ARE THESE PILLS VEGAN
The information on the bottle says that these are vegan and does not contain wheat, glutten, soybeans, dairy, egg, fish/shellfish, peanuts/tree nuts. Usually Vitamin B-12 is synthesized by bacteria found in animals, so B-12 is found in sources such as seafood, beef, poultry, eggs and milk or other dairy products. For people following strictly vegetarian diet, they might have Vitamin b12 deficiency and these pills seems to be a good fit for them.
Also, while reading up on these pills I came across some interesting information on several web-sites about these vitamins and why are they named so.
WHY IS VITAMIN B NAMED SO
Vitamin B has an interesting history. In the 19th and early 20th century scientists were looking into a disease called beriberi (whose symptoms included weakness and loss of feeling in the feet and legs, edema of the trunk, difficulty in breathing etc.) Several researchers had observed that this disease was related to rice diet. It wasn't until Adolphe Vorderman (a medical inspector for prison) noticed that prisoners who had a diet of mostly brown rice had significantly less cases of beriberi than the prisoners who had diet of mostly white rice. After this several scientists were trying to separate the compound in brown rice that was responsible for preventing beriberi.
A polish scientist named "Casimir Funk" claimed to have separated that compound and named it vitamine by combining vital amines (because it contained an amino group.) Though it was realized later that he was not completely successful in isolating the active compound from rice.It was American biochemist "Elmer McCollum" who was successful in doing that. Since they did not understood the complete chemical composition of the compound yet, so compound was give a generic name "factor B". He had also named another compound he had discovered as "factor A". However, scientific community needed a batter names than water soluble factor B (or fat-soluble factor A) so they adapted Funk's nomenclature and naming them as Vitamin A, Vitamin B. The "e" at the end of vitamine was removed because not all compound contained animo groups and one of the rules of nomenclature mentioned naming "a neutral substance of undefined composition" ending in "in". So the name Vitamin was adopted by scientific community and most of the new compounds were named similarly e.g. Vitamin C, Vitamin D until their complete chemical composition could be determined (some exception exists such as Vitamin K which was derived from German word Koagulation (coagulation) since this compound was a prerequisite for blood coagulation)
Though even after determining the complete chemical composition of Vitamins, we still call them as Vitamin because it is easier to remember them instead of the chemical term.
WHY IS VITAMIN B12 NAMED SO
After further research it was found that what was earlier thought to be single vitamin was in-fact chemically distinct compounds that occurred in the food together. All these compounds were given numbers e.g. Vitamin B9 is folic acid. Vitamin B12 is a compound that contains the essential mineral cobalt.
There were several Vitamin B discovered, however it was late found that only few of the Vitamin Bs are actual vital: Vitamin B1, B2, B3, B5, B6, B7, B9, and B12. Supplements that contain all these are sold as Vitamin B complex.
WHAT IS METHYL B12
Vitamin B12 is also called cobalamin, which refers to compound that have cobal ion in the middle. Depending upon to which component cobalt is attached to it is named differently (Cyanocobalamin, Hydroxocobalamin, Adenosylcobalamin, and Methylcobalamin) Methylcobalamin contains cobalt joined with Methyl
IS METHYL B12 SPECIAL
The bottle mentions that Methyl B12 is superior form of B12. I am not sure of if the body gets more benefits from this form of B12, but Adenosylcobalamin, and Methylcobalamin are the forms of B12 that naturally occur in the body. So the body doesn't have to covert this form of vitamin B12 and can be absorbed easily.
Conclusion: Source Naturals is better if you want just the methylcobalamin with as little as possible of everything else. Jarrow Formulas is better if you want to enjoy the extremely delicious taste of a much larger tablet (lozenge) at a slightly lower price per tablet.
Color Changes: Source Naturals starts out as a tiny, very slightly pinkish, white tablet that turns moderately dark pink if left outside of the pill bottle for 3 to 12 hours. Jarrow Formulas starts out as a large tablet with the exact same, very slightly pinkish, white color. However, unlike the tiny, circular, chewable, Source Naturals tablet, the large, circular, chewable, Jarrow Formulas tablet doesn't change color much if left outside of the pill bottle for 3 to 12 hours. The pink dots on the Jarrow Formulas tablet will get darker and more noticeable after being left outside of the pill bottle for 3 to 12 hours but the original, very slightly pinkish, white color will still be the predominant color. Like other forms of vitamin B12, methylcobalamin is pink and apparently gets even pinker when these tablets react with the humidity in the air.
Question: Does methylcobalamin get absorbed better than cyanocobalamin?
Answer: Yes, slightly.
Question: Does sublingual vitamin B12 get absorbed better than swallowed vitamin B12?
Answer: Yes, slightly, but not because the skin under the tongue is any better at absorbing vitamin B12 than the skin of the small intestines, where most of the vitamin B12 absorption occurs. Sublingual merely extends the total length of the absorption zone by about 5%. To get the full benefit of that extra 5%, we would need to keep the sublingual tablet in our mouth for about 15 minutes. The large intestines cannot absorb any vitamin B12, even though plenty of vitamin B12 is always being produced in everybody [including vegans] by the bacteria inhabiting the large intestines.
Question: What increases and what decreases vitamin B12 absorption?
Answer: Calcium increases vitamin B12 absorption. Vitamin C decreases vitamin B12 absorption. Eating vitamin B12 together with food increases vitamin B12 absorption.
THE BIG PICTURE: The human brain shrinks in size as it gets older and vegans, who tend to be deficient in vitamin B12, have the fastest rates of brain shrinkage as they get older while people who swallow vitamin B12 pills tend to have the slowest rates of brain shrinkage as they get older. Meat eaters have slower rates of brain shrinkage compared to vegans but faster rates of brain shrinkage compared to vitamin B12 pill swallowers. Aim to actually absorb exactly 6 to 9 micrograms of vitamin B12 per day to stay at the optimum blood level of vitamin B12.
Therefore, my advice to the vast majority of people is:
Because we can only absorb about 1.05% of the vitamin B12 that we swallow, we need to swallow one 500 microgram pill once each day or one 5,000 microgram pill once each week to end up absorbing the optimum amount.
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