- 1Observatory
 of Herb-Drug Interactions & Drug Discovery Group of Center for 
Pharmaceutical Studies, Laboratory of Pharmacognosy, Faculty of 
Pharmacy, University of Coimbra.
 
 
 
Abstract
Cardiovascular patients frequently use herbal
 medicinal products, in order to contribute to the improvement of their 
chronic condition without medical intervention. However, they are likely
 to suffer from adverse effects from natural products and herb-drug 
interactions. This work aimed to alert cardiovascular patients and 
healthcare providers of the potential of occurrence of herb-drug 
interactions with cardiovascular therapy. Information obtained from the 
campaign "Aprender Saúde Entre as Plantas e os Medicamentos", carried 
out by the Observatory of Herb-Drug Interactions (www.oipm.uc.pt), was 
accessed in order to exemplify some selected interactions. From data 
received during the campaign, it was highlighted the prevalence of 
certain natural products particularly goji berries, green tea, 
mangosteen and rooibos that have significant cardiovascular effects. For
 this reason their intake should be carefully monitored in 
cardiovascular patients. This prevalence of use suggests a pattern in 
their use in Portugal. The ending results also indicate that there is still a lack of knowledge about the possible risks of herbal
 products, which may adversely affect the health of any patient. Thus 
becomes clear the value of the role of health professionals in the 
screening of such interactions.