Why is using fen-phen a dangerous combination?
Rare heart conditions have been linked to the use of the diet drug fen-phen. Studies have shown that heart valve damage appeared in a high percentage of long-term fen-phen users especially. Primary pulmonary hypertension (PPH) occurs in the blood vessels in the lungs. These complications are very hard to treat and diagnose and lead to heart failure and death in some instances.