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Another class of gastric acid inhibitors known as histamine 2 (H 2 )-receptor antagonists (e.g., cimetidine, famotidine, and ranitidine), often used to treat peptic ulcer disease, has also been found to decrease the absorption of vitamin B 12 from food

Oral supplements pass through the digestive tract to be absorbed by the bloodstream, and much of the nutrient is lost in this process

Makes medical claims: Legitimate suppliers avoid making specific medical/therapeutic claims

The key is supporting your gains through lifestyle and periodic resumed use

How many sprays should I take per day

While this test does not predict exact GHK-Cu response, these genetic insights can support a more comprehensive discussion with your provider about personalized dosing strategies