There is a lot to say here but I will try to keep this brief. * Order process: Product ordered, received on time, condition good, etc. etc. Everything fine there. * Why I tried it: Information concerning the; advantages of Methyl form of B12 over other forms; the advantages of the sub-lingual form over others; symptoms that can result from lack of B12; the body's reduced ability to absorb B12 with age; are all available on the internet already. I won't bother repeating that stuff here. I'm getting old enough (60s) that age related reduced absorption could start to become an issue. Wanted to try a sub-lingual form of supplement to see if it would improve my insomnia (B12 required for generation of melatonin), reduced ability of muscles to recover after strenuous exercise (B12 required for cell repair), and maybe other little issues that I had attributed to normal aging. * Dose: I started taking one of these a day. I place it under my tongue and let it slowly dissolve there. I think that others that complain that it doesn't dissolve fast enough and are chewing it are defeating the effectiveness of the supplement. For absorption through mucus membranes percent of absorption will be directly related to length of exposure. You want to try to keep it there as long as possible. (For me it's usually almost an hour.) * Results: After a week or so I noticed that I seemed to be sleeping better. I actually started to have dreams; haven't done that in almost a decade. Also noticed improvement in muscle recovery after exercise; they don't stay sore for a week or more like they used to. * Other unexpected results: My distance vision seems to have improved. I can read the fine print on the HD TV without my glasses. Couldn't do that before. The spider veins on my legs, that have been developing for the last several years, are going away. First noticed this after a couple of weeks of taking the supplement but didn't believe it. After 4 weeks, defiantly something happening. They change from dark blue/purple to magenta to red to pink and then fade away to the point where they are no longer visible. It's been a couple of months now and I would estimate, at this point, that they are about 70% gone. (My wife started taking this stuff shortly after I did; she is seeing the same improvement.) It seems that my facial hair, which was all gray, seems to be getting darker; some of the normal color is coming back. If I don't shave for a few days it shows more than it used to. * Other changes that could contribute to results: Have only made one other change in diet/lifestyle prior to starting this supplement. Two months before starting the B12 I looked at our sodium intake in response to a different condition that my wife has; found that it was quite high. As a result we reduced our dietary sodium intake by a lot. I did not notice the changes mentioned above until after we started taking the B12 but the reduced sodium intake could be a contributing factor to the improvements

This works great, and I had the blood test done to prove it! When I was feeling fatigued all the time I had multiple blood tests done, one of which for B12. It came back at a relatively low number. Two and half months after starting Jarrow's Methyl B12 I had it retested and it had more than doubled. Great product

These are 1000 mcg pills. These are Lozenges which means that they can be chewed or dissolved in the mouth. 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. These have a lemon flavour, which is sweet and not bitter. I did not feel any after-effects or discomfort from the tablets. 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

Awesome. I spent my entire life battling social anxiety disorder. I hate all the meds on the market and especially their side effects. After taking a product called True Calm by now foods; I realized my anxiety disorder was caused by my b-6 and b-12 deficiencies. It sucks to have suffered all these years; spent all that money on doctors, shrinks and meds; only to learn all I needed was some very cheap B-vitamins. At 38 I finally have a normal life. Shame on the medical community; they always knew this but they can't patent vitamins and make money off them so they don't tell you how helpful they are. They make money by keeping us sick. Back on topic, be careful not to get the B-12 vitamins that contain cyanide(cyanocobalamin)

For two years I suffered horrible esophageal spasms and indigestion, daily, that would go on for hours. I tried everything I could think of and nothing worked. (antacids, etc.) Then one of my friends sent me an article that said one of the symptoms of a B-12 deficiency is digestive problems. A B-12 deficiency seemed a likely possibility since I have had my gallbladder removed and am taking omeprazole. After I had my gallbladder out the indigestion began and eventually got so bad the esophageal spasms started up. Horrible. It would radiate from my stomach up my chest and into my lower jaw, over and over for hours on end. I spent many nights fighting nausea and standing over a sink drooling heavily. I had no idea such misery was possible until it happened to me. I didn't hold much hope that this would work, because nothing else did, but I figured I'd try it and if it didn't work I'd only be out a few dollars. Within days I was about 80% better. It gets a little better every day. My doctor poo-poohs this but my take on it is: after two years of sheer torture/agony it worked. I don't understand how it worked or why it worked only that it did--and that is good enough for me

I bought a bottle of these last month after reading that some medication I am taking strips the body of B-12 vitamin. I chose this brand due to the high rated reviews and I am sure glad I did. Within just a couple of days (starting with one a day, in the morning) I experienced increased energy and also a more positive outlook on life; my mood is definitely a lot better than before, I also noticed a big drop in everyday anxieties and I have a longer fuse too! (temper-wise) I've also noticed better sleep too, I am really impressed with the benefits so far. Some days I take another in the afternoon...you should avoid taking these at night. Also, there seems to be a lot of confusing whether to melt these under your tongue or to chew them - the instructions on the bottle clearly point to either method. I do both, either chew or let it melt (takes about 15 min)

After eating a vegan diet for 3 years, I started having serious problems with fatigue. A blood test revealed low B-12 levels. The doctor recommended monthly B-12 shots, but the bright red dye in the injections freaked me out (what IS that stuff?) and I didn't want the inconvenience of needing to go get shots, so I started taking the Jarrow Methyl B-12. My fatigue disappeared rapidly and my B-12 levels normalized. There is scientific research that shows B-12 absorption is not effected by whether you chew the tablets or dissolve them sublingually, so I chew them. Methyl B-12 is the best form to take as it is more bioavailable, and the more commonly found cyanocobalamin form of B-12 leaves trace amounts of cyanide in the body. Who needs that?! A highly regarded nutrition researcher and lecturer recommended the Jarrow brand to me and I'm very happy with the product

Jarrow Formulas is a trusted brand in our home. Priced affordably, chewable, lightly flavored are distinct pluses. Be mindful that the "other" form of B-12 (Cyanocobalamin) is not easily assimilated by our bodies, contains trace amounts of cyanide while not dangerous still requires the body to expand a higher level of energy to metabolize it to remove it from our system. It's also synthetic and therefore cheap to manufacture. Jarrow Formulas which uses Methylcobalamin which has been proven to provide the most active source of B-12 to us. If you're plagued by nerve pains, depression, anxiety or fatigue, add this important supplement to your daily regimen to help restore balance

These are great for anyone with suspected difficulty in absorbing B12 (due to many factors including digestive issues, MTHFR gene variations, etc.). I decided to start on a low dose to avoid any possible negative side effects, so for the first 2 or so weeks I cut the tablets into fourths and took one of the fourths per day. The tablets are not scored, but are large enough that they are relatively easy to cut with a sharp knife. I have successfully cut them into halves and fourths. After a couple of weeks I bumped up to a half tablet, and after a couple more weeks I bumped up to one full tablet. I have been taking these for a little over a month now and haven't noticed any significant positive or negative effects. However, since I have MTHFR variations, I feel that it is worth supplementing with methyl B12. If you use these properly (place the tablet under your tongue without chewing), a full tablet will take a long time to dissolve. I usually keep it under my tongue to dissolve for as long as I can stand (5-10 minutes) and then chew the rest and rub the chewed powder part on my gums (the mucus membranes throughout the mouth can absorb the B12, not just under the tongue). Next time, I will probably order the 5000 mcg tablets and cut them into fourths since that is cheaper than buying the 1000 mcg tablets (although these are already a reasonable price)

(1)Both products are extremely delicious and it's difficult to resist the temptation to eat too much. (2)Both products contain 1000 micrograms of methylcobalamin per tablet and will easily and rapidly dissolve in our mouth. (3)Both products are economically priced but the Jarrow Formulas product is 11.78% cheaper per tablet than the Source Naturals product. (4)One white-colored Jarrow Formulas tablet (lozenge) is much, much larger than one pink-colored Source Naturals tablet. (5)Jarrow Formulas other ingredients: xylitol, cellulose, vegetable-source stearic acid, lemon flavor, vegetable-source magnesium stearate, citric acid, and silicon dioxide. Suitable for vegetarians and vegans. (6)Source Naturals other ingredients: mannitol, sorbitol, natural cherry flavor, stearic acid, and magnesium stearate. 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