There has not been a UL (upper intake level) established for B12 because it is not stored in your body and therefore, can not build up enough to cause serious adverse side effects for most people
But, there are some downsides: They need regular shots, which might not fit everyones lifestyle
Mail federal copies in a batch to the IRS
GHK-Cu addresses these concerns directly
Food and Drink High histamine foods: Alcohol (especially beer and red wine), fermented foods (e.g., aged cheeses, soy sauce, sauerkraut, kombucha), chocolate, tomatoes, citrus fruits, pineapples, kiwi, bananas, strawberries, papayas, plums, spinach, eggplant, peanuts, walnuts, cashews, chickpeas, cured meats, food additives (e.g., MSG, artificial dyes), ketchup, mustard, and/or shellfish Odors and Chemicals Fragrances (i.e., perfumes, colognes), cigarette smoke, cleaning supplies, pesticides, and/or new car or new carpet smells