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L-DOPA

L-DOPA is a direct precursor to dopamine, and its supplementation can increase dopamine levels in the body. It is known as Levodopa and is one component of most Parkinson's treatments, and found in high amounts in Mucuna Pruriens.

Our evidence-based analysis on l-dopa features 43 unique references to scientific papers.

Research analysis led by .
Reviewed by
Examine.com Team
Last Updated:

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Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what effects l-dopa has on your body, and how strong these effects are.
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-c Minor - See 2 studies
An increase in penile girth has been noted in the flaccid state at rest, which is no longer present during sexual stimulation.
grade-c - - See study
No significant influence on libido

Things to Note

Also Known As

Levodopa, L-3, 4-dihydroxyphenylalanine

Do Not Confuse With

Mucuna Pruriens (Source of L-Dopa)

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Click here to see all 43 references.