Effect of Oral 5-HTP Intake on Urinary 5-HIAA Excretion
试验速览
- 阶段
- 3 期
- 状态
- 终止
- 发起方
- 入组人数
- 8
- 试验地点
- 2
- 主要终点
- Urinary excretion of 5-HIAA
研究概览
简要总结
This is a research study looking at the effect of 5-Hydroxy Tryptophan (5-HTP) on urine excretion of 5-Hydroxyindolacetic acid (5-HIAA). 5-HTP is a common over the counter product that is sold in natural food stores and via the Internet. Increased levels of 5-HIAA in the urine can be found in a specific type of cancer, called carcinoid tumor. This study will examine the effect of oral 5-HTP intake on 5-HIAA excretion. Understanding this effect may help to determine which tests should be done in a patient with increased 5-HIAA excretion who's also taking 5-HTP.
详细描述
5-HTP is a common over the counter product that is sold in natural food stores and via the Internet. It is claimed to improve sleep problems, depression, anxiety, compulsive disorders, restless leg syndrome, migraines, fibromyalgia, and low pain threshold.Increased levels of 5-HIAA in the urine can be a of a specific type of cancer, called carcinoid tumor. Urinary 5-HIAA levels can also be increased by a number of food products and drugs. Oral 5-HTP is not known as a cause of elevation of 5-HIAA in urine. However, recent information suggests that 5-HTP may cause an increase.
In this study we examine the effect of oral 5-HTP intake (100 mg at bedtime for 10 days) on 5-HIAA excretion in the urine, following a prospective, double-blind placebo-controlled study design.
Understanding this effect may help to determine which tests should be done in a patient with increased 5-HIAA excretion who's also taking 5-HTP.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Diagnostic
- 盲法
- Double
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •18 years and older
- •in good health
排除标准
- •Pregnancy
- •Intake of drugs that affect 5-HIAA excretion in urine
- •Anti-depressants
- •Participation in other studies
结局指标
主要结局
Urinary excretion of 5-HIAA
Plasma Chromogranin A
次要结局
- Side effects