Some signs/symptoms of Histamine Intolerance to look for: flushing and temperature regulation issues, sneezing, itchy skin, hives, headaches/migraines, wheezing, burning in mouth/hands/feet, tightness/fullness in throat, Postural Orthostatic Hypotension Syndrome (POTS) or other forms of dysautonomia, dizziness/vertigo, low blood pressure, tachycardia, heart palpitations, swelling, anxiety/panic attacks, confusion/irritability and difficulty sleeping/sleep disturbances
Patients report being charged for follow-up consultations they did not receive or being unable to obtain refunds after canceling subscriptions
So, 1000 mcg of B12 is the same as 1 mg

Ingredients: Water, Butylene Glycol, Caprylic/Capric Triglyceride, Beeswax, Niacinamide, Cetearyl Alcohol, Isononyl Isononanoate, Arachidyl Alcohol, 1,2-Hexanediol, Polyglyceryl-3 Methylglucose Distearate, Behenyl Alcohol, Glyceryl Stearate, Betaine, Dimethyl-trimethylsilyloxysilane, Arachidyl Glucoside, Cetearyl Olivate, Arginine, Carbomer, Sorbitan Olivate, Allantoin, Glycerin, Panthenol, Tocopherol, Xanthan Gum, Glutathione(600 ppm), Dipotassium Glycyrrhizate, Ethylhexylglycerin, Disodium EDTA, Sodium Hyaluronate , Glucose, Alcohol, Malva Sylvestris (Mallow) Extract, Melissa Officinalis Leaf Extract, Alchemilla Vulgaris Extract, Achillea Millefolium Extract, Veronica Officinalis Extract, Mentha Piperita (Peppermint) Leaf Extract, Primula Veris Extract, Lycopodium Clavatum Extract, Equisetum Arvense Extract, Ceramide NP, Hydrogenated Lecithin, Polyglyceryl-10 Stearate, Sodium Hydroxide, Sodium Ascorbyl Phosphate, Biotin, Folic Acid, Pyridoxine, Cyanocobalamin, Linoleic Acid, Riboflavin, Beta-Carotene, Thiamine HCl, Copper Tripeptide-1, Acetyl Hexapeptide-8, Palmitoyl Pentapeptide-4, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Fragrance

1 H NMR (300 MHz, DMSO) 8.63 (d, J = 5.2 Hz, 2H), 8.09 (d, J = 72.6 Hz, 4H), 7.83 (q, J = 8.2 Hz, 8H), 3.44 (d, J = 4.5 Hz, 4H)