Jamieson:
SOURCES NATURE
83/100
SUPPIE SCORE
78/100
EFFICACY
High
SAFETY
82/100
CLEANLINESS
What Does SOURCES NATURE Do?
Jamieson Sources of Nature 1,000 mcg methylcobalamin offers a bioavailable active form of B12 in convenient sublingual tablets for faster uptake versus standard cyanocobalamin.
Is this methylcobalamin B12 suitable for vegetarians or vegans with low dietary intake?
How does the sublingual format compare to swallowing regular B12 tablets?
Can I take this daily long-term without concern for excess intake?
Chat with Suppie
What Are the Benefits of SOURCES NATURE?
Based on proven scientific research
Energy MetabolismStrong
Red Blood Cell FormationModerate
Macronutrient UtilizationModerate
Good For:
What Are the Side Effects of Jamieson: SOURCES NATURE?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•Methylcobalamin at 1,000 mcg daily is well-tolerated with no established upper limit as excess is typically excreted in urine.
•Sublingual delivery bypasses some digestive absorption issues common in older adults or those with gastrointestinal conditions.
•No known adverse effects at this dose; rare mild digestive upset or diarrhea may occur in sensitive individuals.
•Product contains no gluten, lactose, or artificial additives per label.
•Store between 15-25°C and keep away from children as directed.
Potential Side Effects
Negative Interactions
Allergens
None listed
Inactive Ingredients
Cellulose
Low RiskMannitol
Low RiskCalcium silicate
Low RiskSodium sulfate
Low RiskCrospovidone
Low RiskNatural cherry flavour
Low RiskSilica
Low RiskVegetable magnesium stearate
Low RiskStevia
Low RiskWhat Are the Ingredients in Jamieson: SOURCES NATURE?
Vitamin B12 (methylcobalamin)
1,000 mcg
Cellulose
Mannitol
Calcium silicate
Sodium sulfate
Crospovidone
Natural cherry flavour
Silica
Vegetable magnesium stearate
Stevia
Scan the bottle in your cupboard
Same graded report you just read — on any label, in about 10 seconds.
Dosage & Bioavailability
How the active doses and forms in SOURCES NATURE compare to the research.
•Vitamin B12 (methylcobalamin) — 1,000 mcg per tablet; high-dose range used in studies (500-1,000 mcg) with ~1-2% passive absorption yielding 10-20 mcg uptake.
•Vitamin B12 (methylcobalamin) — 1,000 mcg per tablet; active coenzyme form with potentially higher cellular retention than cyanocobalamin despite similar overall bioavailability.
Frequently Asked Questions
Common questions about Jamieson: SOURCES NATURE