Safety Information
Explain your past/current medical history fully and clearly with your doctor before commencing treatment with any new medication. If you are using any herbal supplements or over the counter medicines, for instance, vitamin pills, then kindly communicate it to your doctor.
Please notice to your doctor if you have experienced or are undergoing any medical conditions like using a nitrate drug for chest pain or heart problems.
Doctors warn against using the drug if you are allergic to any component in it or if you are also using a nitrate drug for chest pain or heart problems, including
nitroglycerin (Nitrolingual, Nitrostat, Nitro-Dur, Minitran, Nitro-Bid, Deponit, Transderm-Nitro),
isosorbide dinitrate (Isordil, Dilatrate-SR, Sorbitrate),
isosorbide mononitrate (ISMO, Imdur, Monoket), or recreational drugs, for instance, amyl nitrate or nitrite ("poppers").

Cialis, when taken with a nitrate medicine, can create a serious decrease in blood pressure, driving to fainting, stroke or heart attack. Tell your doctor if you have any of the following health conditions before taking tadalafil:
A recent of history heart attack (in the past 90 days);
A recent history of congestive heart failure or stroke (in the past 6 months);
Angina (chest pain);
High or low blood pressure;
Liver disorder;
Kidney disorder (or if you are undergoing dialysis);
A blood cell disorder such as sickle cell anemia, leukemia or multiple myeloma;
A bleeding sickness such as hemophilia;
Stomach ulcer;
Retinitis pigmentosa (an inherited disease of the eye);
Physical damage of the penis (such as Peyronies disease); or
If you have been advised you should not have sexual intercourse for health reasons.