Fildena 150 mg is a brand name for the generic drug sildenafil citrate, which is primarily used to treat erectile dysfunction (ED). When taking Fildena 150 mg dosage, it's essential to be aware of potential drug interactions as they can affect the drug's effectiveness and increase the risk of adverse effects.

Nitrates: Fildena 150 mg should not be taken with nitrates, including nitroglycerin, isosorbide mononitrate, and isosorbide dinitrate. Combining sildenafil with nitrates can lead to a severe drop in blood pressure, which can be dangerous.
Alpha-blockers: Alpha-blockers like doxazosin, tamsulosin, or terazosin are commonly prescribed for conditions such as high blood pressure or an enlarged prostate. Taking Fildena 150 mg with alpha-blockers can cause low blood pressure, dizziness, lightheadedness, and fainting. It is crucial to have a proper dose adjustment and close monitoring if these medications need to be used together.
Other ED medications: Concurrent use of Fildena 150 mg with other drugs used to treat erectile dysfunction, such as Viagra (sildenafil), Cialis (tadalafil), or Levitra (vardenafil), should be avoided. Combining these medications can increase the risk of adverse effects and potentially lead to a severe drop in blood pressure.