Natrol B12 Fast Dissolve Tablets Review

How is the product formulated and what dose does it deliver?

Each Natrol Fast Dissolve tablet is listed at 5000 mcg of vitamin B12 per the sources reviewed. The product is presented as a fast-dissolve, flavored oral tablet (strawberry flavor reported in retailer and reviewer listings). Fast-dissolve formats aim to dissolve in the mouth for ease of use compared with standard swallowable pills.

WebMD notes oral B12 can treat and prevent deficiency when taken by mouth; the 5000 mcg per-tablet strength situates this product as a high-dose supplement that delivers microgram-level amounts far above typical daily recommended intakes, so users should confirm dosing needs with a clinician.

Does this formulation meet clinically supported uses for vitamin B12?

Evidence summarized by WebMD shows vitamin B12 (oral or injectable) is effective for treating and preventing vitamin B12 deficiency. Oral products can be appropriate for many deficiency cases, depending on cause and severity.

This Natrol product’s 5000 mcg strength provides a dose commonly used in over-the-counter B12 supplements and is likely adequate for people using oral B12 to maintain levels or address mild deficiency, but injectable therapy is indicated for some medical conditions and should be administered per a healthcare provider.

What side effects and safety considerations should buyers know?

Healthline reports oral vitamin B12 is generally safe at recommended doses, but excess intake and injectable formulations can produce side effects including nausea, headache, dizziness, mild diarrhea, itching, and, rarely, allergic reactions or anaphylaxis. While those more serious reactions are uncommon, the 5000 mcg tablet is a high single dose and users should consult a clinician if they have concerns or preexisting conditions.

WebMD highlights that different chemical forms exist (methylcobalamin active in the body; cyanocobalamin is a common supplement form) and that users should check product labeling and discuss with a provider if they have allergies or are receiving B12 injections that contain additional components such as cobalt.

Do the tablets dissolve quickly and how do they taste in real use?

Retail customer comments and product reviewers note the product’s strawberry flavor and fast-dissolve format; several users explicitly say the tablets taste good and dissolve quickly. VitaminReviewer and Walmart listings reference the strawberry fast-dissolve experience.

At the same time, real user feedback includes notes that the tablets can be 'a little sweet'—a response that can be a positive for some users and a negative for others who prefer unflavored or less sweet formulations.

How does Natrol compare to other available B12 supplements?

In a pharmacist-ranked list (US News & World Report), Natrol’s B12 Fast Dissolve product appears among other mainstream OTC B12 options; it ranks lower than Nature Made and Nature’s Bounty in that specific ranking but is recognized as a 5000 mcg fast-dissolve offering.

Buyers should weigh the convenience of a fast-dissolve 5000 mcg tablet against competing formats (softgels, gummies, lozenges) and the clinical need for high microgram dosages versus lower-dose maintenance products.

Pros & Cons

• ✅ High 5000 mcg per tablet dose — suitable for users seeking a large single microgram dose
• ✅ Fast-dissolve strawberry-flavored tablet format reported to dissolve quickly in-mouth
• ✅ Convenient oral option for individuals who prefer a sublingual/fast-dissolve experience over swallowable pills
• ✅ Appears in pharmacist-ranked lists as a recognizable OTC B12 option (listed in US News ranking)
• ✅ Reported by retail reviewers to have an agreeable strawberry taste for many users

• ❌ 5000 mcg is a high single dose that may exceed daily needs for many users; excess intake can be associated with side effects per Healthline
• ❌ Some users report the tablets are 'a little sweet,' which may be off-putting for those preferring neutral flavors
• ❌ Product ranks lower than top pharmacist-recommended options in the US News list
• ❌ Label should be checked for the specific chemical form (methylcobalamin vs cyanocobalamin); the general guidance on forms comes from WebMD, not specific Natrol labeling in the brief

How It Compares to the Competition

• Nature Made Vitamin B12 (softgel) — Pharmacist-ranked top choice in US News; softgel format differs from Natrol’s fast-dissolve tablet and is positioned as a mainstream option.
• Nature's Bounty B12 Energy (quick dissolve tablets) — Another quick-dissolve tablet in rankings — similar format but appears higher than Natrol in the referenced pharmacist list.
• Vitafusion B12 Gummies — Gummy format with lower listed mcg in the US News sample — better for users who prefer chewable gummies over fast-dissolve tablets.
• NOW Vitamin B12 Lozenges — Lozenge format with added folic acid in the cited sample — an alternative for buyers seeking a lozenge rather than a true fast-dissolve tablet.

Who Should Buy This & Who Should Skip It

Buy it if: Buyers who want a single, high-strength oral B12 (5000 mcg) in a fast-dissolve strawberry tablet should consider Natrol. It fits people seeking convenient, on-the-go B12 support who prefer a flavored, quick-dissolve format and who have confirmed with a clinician that a 5000 mcg oral dose is appropriate.

Skip it if: Skip this product if you only need a low-dose maintenance B12 or prefer unflavored/unsweetened forms; also consult a clinician before using high-dose B12 if you have allergy concerns, are pregnant, or are under medical supervision for deficiency that may require injectable therapy.