Evidence supporting the use of: Thiamine (Vitamin B1)
For the health condition: Heart (weakness)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Thiamine (Vitamin B1) is scientifically used to support heart function, especially in cases where deficiency is present. Thiamine is essential for energy metabolism and normal function of the cardiovascular system. Severe thiamine deficiency causes beriberi, which has a "wet" form characterized by cardiac involvement, including heart failure, tachycardia, and edema. Thiamine deficiency is particularly seen in populations with poor nutrition, chronic alcoholism, or malabsorption syndromes. In such cases, supplementation with thiamine can rapidly reverse cardiac symptoms and improve heart function.

Clinical evidence supports the use of thiamine in treating heart failure associated with deficiency. Several small clinical trials have demonstrated that thiamine supplementation in patients with chronic heart failure and low thiamine levels can improve cardiac function, as measured by left ventricular ejection fraction and symptoms. However, in patients without deficiency, evidence is less robust, and routine supplementation has not been shown to benefit heart function.

Overall, the use of thiamine for "heart weakness" is well-founded in situations of deficiency, with clear historical and scientific support. Its benefit in heart failure unrelated to thiamine deficiency is still under investigation. Thus, thiamine is an important, evidence-based treatment for heart problems caused by or associated with deficiency, but not a general cardiovascular tonic for the population at large.

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