Black Currant: Uses and Risks

But most people tend to have few problems with GLA. Allergy is a rare complication.

Risks. Black currant may slow blood clotting. So avoid using it if you have a bleeding disorder or take blood thinners.

Also, stop taking black currant at least two weeks before surgery in order to:

• Reduce the risk of bleeding
• Avoid interactions with anesthesia

If you are pregnant or breastfeeding, it's best to avoid use, just to be safe.

Interactions. Be careful about combining black currant with herbs and supplements that can slow blood clotting, such as:

• Angelica
• Clove
• Ginger
• Panax ginseng

Also be careful about combining black currant with drugs that can slow blood clotting, such as:

Also, avoid combining black currant with antipsychotic drugs called phenothiazines. In some people, this combination may raise the risk of seizure.

Be sure to tell your doctor about any supplements you're taking, even if they're natural. That way, your doctor can check on any potential side effects or interactions with medications or foods. They can let you know if the supplement might raise your risks.

The U.S. Food and Drug Administration (FDA) does regulate dietary supplements; however, it treats them like foods rather than medications. Unlike drug manufacturers, the makers of supplements don’t have to show their products are safe or effective before selling them on the market.