No instability
Reported effects are mild and transient: Localized irritation or redness at injection site, Mild fatigue or transient headache during initial days, Rare gastrointestinal upset (nausea, stomach discomfort)
B12 supplementation may alter gene expression in Cutibacterium acnes bacteria, increasing porphyrin production that promotes follicular inflammation High-dose B12 (especially intramuscular injections of 1,000 micrograms) appears more likely to trigger acne than dietary intake The effect is relatively uncommon and does not affect most people taking B12 supplements Topical acne treatments (benzoyl peroxide, adapalene combinations) can manage breakouts without discontinuing necessary B12 therapy Never stop prescribed B12 treatment without medical supervision, as untreated deficiency causes serious neurological damage and anaemia Suspected adverse reactions to B12 should be reported through the MHRA Yellow Card scheme Table of Contents Can B12 Vitamins Cause Acne
The effect of the triple monoamine reuptake inhibitor tesofensine on energy metabolism and appetite in overweight and moderately obese men
Consistent use, combined with a healthy lifestyle, will deliver the best outcomes
The dose is usually between 1-5 mg