Phenylalanine comes in several forms as a supplement:
L-phenylalanine is an essential amino acid. It's also found in protein in the foods we eat.
DL-phenylalanine, which contains both the D- and L-forms
People also apply it directly to the skin to try to help with wounds or insect bites.
There is not enough evidence to prove that black currant helps with menstruation-related symptoms or these other health conditions.
Optimal doses of black currant have not been set for any condition. Quality and active ingredients in supplements may vary widely from maker to maker. This makes it hard to set a standard dose.
Can you get black currant naturally from foods?
You can eat the berry of the black currant plant. The berry is also used as a flavoring in liqueurs and other products.
What are the risks of taking black currant?
The juice, leaves, and flowers of black currant are safe when eaten in food products. Black currant is also considered safe if you use the berry or seed oil appropriately as medicine. More information is needed to know whether its dried leaf is safe.
Side effects. The GLA in black currant seeds can sometimes cause side effects, such as: