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There is no established daily requirement or upper limit of proline at this time. Because it is a natural amino acid, there’s not much risk for consuming too much from your diet. If you eat foods high in protein, you likely already get a decent amount of proline from your diet, however consuming more in supplement form is still safe for most people.
Always look for high-quality collagen, gelatin or bone broth supplements that are sold from reputable companies. Purchase grass-fed, organic products whenever possible.
It’s not known if proline supplements are always safe for pregnant or breastfeeding women in high doses. If you have trouble digesting protein, have kidney or liver disease , or you’re pregnant, it’s a good idea to discuss supplementing with proline with your doctor first. *