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Some specific causes include: Certain medical conditions
253 5-HTP has been shown to raise serotonin levels and activity in humans, 254 and one study found women with fibromyalgia had lower levels of 5-HTP and serotonin than matched controls
My sister got b12 deficiency through lack of enough b12 in her diet
Most of the time these "side effects" are not a true B12 side effect
Order related labs such as: o Complete Blood Count (CBC) o Liver enzymes (AST, ALT, bilirubin) o Kidney function tests (creatinine, eGFR) o Methylmalonic acid (MMA) and homocysteine to check B12 activity
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