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Vitamin B12 supplement, sublingual absorption
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 piece (small) of B12 sublingual supplement (1 g) has 4 calories. That works out to 380 calories per 100 g. It contains 0.9 g of carbs, 0 g of protein, 0 g of fat and 0 g of fiber. Its 25 µg of B12 covers 1042% of the Daily Value. Its glycemic index is 60 (low), so it raises blood sugar slowly.
Selected: 1 piece (small) · 1 g
4
KCAL / 1G
Carbs
0.9g
· 0% DV
Protein
0g
· 0% DV
Fat
0g
· 0% DV
Fiber
0g
· 0% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 100% · Protein 0% · Fat 0%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 4 kcal | |
| Total fat | 0 g | 0% |
| Saturated fat | 0 g | 0% |
| Trans fat | 0 g | |
| Sodium | 0.01 mg | 0% |
| Total carbohydrate | 0.9 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 0 g | 0% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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| Serving | Amount | Calories |
|---|---|---|
| 1 piece (small) | 1 g | 4 kcal |
| 1 serving (small) | 1 g | 4 kcal |
| 2 piece (small) | 2 g | 8 kcal |
| 1 piece (large) | 2 g | 8 kcal |
| 5 piece (small) | 5 g | 19 kcal |
| 1 pack (whole) | 30 g | 114 kcal |
| 100 g | 100 g | 380 kcal |
Calculated from 380 calories per 100 g.
Yes, a B12 sublingual supplement can raise vitamin B12 intake and help address low B12. Letting it dissolve under the tongue is a convenient way to take it, but it has not been shown to work better than other oral forms in every situation.
Place a B12 sublingual supplement under your tongue and let it dissolve. Follow the directions for its specific form, since tablets, lozenges, and drops may be used differently; do not chew or swallow it immediately unless the directions say to.
Not necessarily. A B12 sublingual supplement and a swallowed B12 tablet can both raise B12 levels, and research has not established that the sublingual form is consistently superior. The more suitable option depends on the product and the reason you need B12.
Yes, a B12 sublingual supplement can be taken daily when that matches the product’s directions or your supplement plan. The amount and frequency vary between products, so don’t assume that a daily dose is necessary for everyone.
A B12 sublingual supplement is usually well tolerated, but some people report nausea, headache, or a skin rash. Rarely, an allergic reaction can occur; seek urgent care for swelling of the face or throat or trouble breathing.
You can take a B12 sublingual supplement at a time that is easy to remember, since there is no universally established best time of day. Follow the product’s directions, especially if they specify taking it with or apart from food.
The time varies with the severity and cause of the deficiency and how well B12 is absorbed. Blood levels may change before symptoms do, so a follow-up blood test is more reliable than judging the effect by energy alone.
It can, rarely. Acne-like breakouts have been reported with high B12 exposure, although most people do not develop them. If a new rash or breakout starts after you begin a B12 sublingual supplement, pause use and discuss it with a clinician.
Some medicines, including metformin and acid-reducing drugs, can affect B12 levels or absorption over time. If you take medication regularly, ask your doctor or pharmacist whether a B12 sublingual supplement and monitoring are appropriate for you.
Usually not. B12 is needed for normal energy metabolism, but taking a B12 sublingual supplement does not act like a stimulant or reliably boost energy when B12 levels are already adequate.
Vitamins
B12
25µg · 1042% DV
Vitamin A
0µg · 0% DV
B1
0mg · 0% DV
B2
0mg · 0% DV
Minerals
Sodium
0.01mg · 0% DV
Calcium
0mg · 0% DV
Iron
0mg · 0% DV
Magnesium
0mg · 0% DV
Potassium ⭐
0mg · 0% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 4 calories in 1 piece (small) (1 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
A B12 sublingual supplement is a small supplement containing vitamin B12, designed to dissolve in the mouth beneath the tongue. It is not a traditional food; products commonly come as tablets or lozenges, though the exact form and directions vary by brand. Follow the instructions on the pack rather than assuming every product is used the same way.
People often take one as part of a breakfast or daily routine, letting it dissolve instead of swallowing it whole. The taste and texture depend on the product. Although the nutrition table shows 94 g of carbohydrate per 100 g, a typical serving is only about 1 g. If you take medicines or are unsure whether a supplement is appropriate for you, ask a pharmacist or healthcare professional.
Very high
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Low
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
NOVA 3
Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
No known major allergens
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
— Not suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
SATURATED
0g
MONOUNSATURATED
0g
POLYUNSATURATED
0g
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Nutrition data compiled from USDA FoodData Central and scientific sources.