The overall rating for l-cystine is 2 out of 3 meaning there is some evidence that this supplement does some (not all) of what it claims. Using this supplement may lead to some improvements.
Overall Effectiveness Rating
The overall effectiveness rating for l-cystine is 2 out of 3. This rating means the evidence is mixed on the supplement's ability to deliver positive results. While some of the research supports its use, other evidence does not. Using this supplement may lead to positive results. Note, this effectiveness rating is for l-cystine as a whole; there are also individual ratings for the claims below.
Read more: What is the effectiveness rating?
Research Rating for L-Cystine
There are 2 studies in the database on l-cystine; the research rating is 20. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this research rating is for l-cystine as a whole; there are also individual ratings for the claims below.
Read more: What is the research rating?
The overall ratings above are an average of the individual claim ratings below. Individual claims may have higher or lower ratings compared to the supplement's overall rating. For example, some supplements may have excellent backing for one claim, but be completely useless for another. Click on a claim below for more information.
|Immune Health Claims||Effectiveness Rating||Research Rating|
|improve immune function||reduce frequency of the common cold|