There are no known adverse health effects from taking vitamin B12 and magnesium together when following the recommended dosages
16 , e2006203 (2018)
The most commonly reported side effects include: Mild injection site pain, redness, or swelling Nausea or gastrointestinal discomfort Fishy body odor due to trimethylamine accumulation at higher doses Increased heart rate in sensitive individuals Allergic reactions rash, itching, swelling are rare but possible in patients with hypersensitivity to L-Carnitine

INCI Name : Glutathione Percentage Purity :99.9% Compatibility: Compatible with SepiWhite, GigaWhite, Vitamin C, Alpha Arbutin, Kojic Acid, and Kojic Dipalmitate pH Range : 3-6 Colour & Appearance: White powder with a characteristic odor Grade : Cosmetic Grade Recommended Usage : 1-2% up to 5% Solubility: Water Soluble (Add to cooling Phase) Melting Temperature: Avoid heating above 60C Melting Temperature: Avoid heating above 60C Application: Cream, Lotion, Clear Gel, Toner, Mask Vegan: Does not contain animal-derived components Precaution : L-Glutathione (Reduced Glutathione) Powder does not have any known side effects and is generally safe for most people
Suitability requirement: Patient should not be breastfeeding or pregnant
The standard dose ranges from 0.5mg to 2mg depending on individual response, sex (men typically use 1.5-2mg, women 0.75-1.5mg), and tolerance to side effects like nausea