Fresh blackcurrant has extremely few contraindications or recognized sensitivities. The majority of the warnings are to the ingestion of black currant extract, bud, and vegetable oil. Transit disorders Excessive and solitary use of blackcurrant can have laxative effects in persons with sensitive intestines or those suffering from irritable bowel syndrome (IBS), resulting in the emergence of unpleasant symptoms such as diarrhea, stomach pains, and so on. As a result, blackcurrant consumption must be tailored to the individual's digestive tolerance.