NaturalSlim Metab-12 Liquid B12 with Vitamin D 1 fl oz
- Form: Liquid
- Supplement Type: Vitamin B12 Supplement
- Diet: Gluten Free
- Allergens: Gluten Free
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A flavored sublingual B12 and vitamin D combination for buyers who prefer liquid drops over capsules.
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ASIN: B0B1PD567DModel: Metab-12Category: Vitamin B12
Overview
NaturalSlim's Metab-12 is a berry-flavored, sublingual liquid B12 formula combined with vitamin D, sold in a 1 fl oz bottle and marketed for metabolism and energy support.
Methylcobalamin is the specific form of B12 used here, taken sublingually so the drops sit under the tongue rather than being swallowed like a capsule. Pairing B12 with vitamin D in one liquid keeps both nutrients in a single daily dose instead of two separate products. Berry flavor sets this apart from unflavored B12 liquids on the market.
- 2500mcg methylcobalamin B12 per serving
- Includes vitamin D in the same formula
- Sublingual liquid drop format
- Berry flavor, gluten-free
Who it's for
Fits people who want a flavored, sublingual B12 and vitamin D combination rather than a capsule or unflavored drop. It is not the choice for anyone who wants B12 alone without added vitamin D, or who prefers capsules over liquid drops.
Pros and cons
- Combines B12 and vitamin D in one liquid
- Sublingual dropper format
- Berry flavor, not unflavored
- Does not offer a B12-only option without added vitamin D
- 1 fl oz bottle is a smaller volume than some liquid B12 products
Performance notes
The sublingual method places the drops under the tongue rather than swallowing them, which is the intended way B12 liquids like this are typically used. Methylcobalamin is the specific B12 form in the formula, delivered at 2500mcg per serving alongside vitamin D in the same drops. The berry flavor is added, unlike unflavored liquid B12 products.
Specifications
| Brand | NaturalSlim |
|---|---|
| Model | Metab-12 |
| Form | Liquid |
| Supplement Type | Vitamin B12 Supplement |
| Diet | Gluten Free |
| Allergens | Gluten Free |
| Count | 1 fl oz |
| Flavor | Berry |
| Benefits | Metabolism Improvement |
Frequently asked questions
What form of B12 does NaturalSlim's Metab-12 use?
It uses methylcobalamin at 2500mcg per serving.
Does this product include vitamin D as well?
Yes, vitamin D is combined with the B12 in the same liquid formula.
How is this B12 meant to be taken?
It is a sublingual liquid, meant to be taken as drops under the tongue rather than swallowed like a capsule.