Here are a few original rewrites:
Caution: These tablets may increase the risk of serious health complications, including blood clots, thrombosis, and heart attacks.
Alternative versions:
Warning: Use of these tablets has been associated with an elevated risk of blood clot formation, thrombotic events, and heart attack.
Important Safety Notice: These tablets can contribute to the development of blood clots and may increase the likelihood of thrombosis or heart-related emergencies, including heart attacks.
If this is for a medical article, label, advertisement, or legal disclaimer, I can tailor the wording accordingly.
