The most common side effects of forskolin include elevated risk of bleeding, possible interference with treatments for blood vessel and heart disease, and lowered blood pressure. Because high doses may hinder fetal growth, expecting and breastfeeding mothers are advised to avoid it, according to WebMD.
Forskolin is marketed as a treatment for everything from erectile dysfunction and eye pressure to high blood pressure, clotting, cancer and obesity. However, medical researchers extol its usefulness when giving it intravenously for treatment of heart function and asthma, according to WebMD.
People undergoing treatment for heart disease or for a bleeding disorder should avoid forskolin, as it tends to drop the blood pressure in those taking it. Patients who suffer from low blood pressure could end up finding their levels dropping too much. Patients who have diseases of the heart and blood vessels could find their conditions significantly worse after taking forskolin. Patients who are about to undergo surgery should stop taking forskolin a few weeks before the operation is scheduled to take place. People taking high blood pressure medications or medications that boost blood flow into the heart should stay away from forskolin, as the risks include dizziness and even fainting, as stated by WebMD.