Fildena CT 100 contains 100 mg of sildenafil citrate, the same active ingredient found in medications like Viagra, and is used to treat erectile dysfunction (ED). However, whether it is safe to take Fildena CT 100 with other medications depends on the specific medications you are using. Some medications can interact with sildenafil, which may lead to serious side effects or reduce its effectiveness. Medications that should not be taken with Fildena CT 100: Nitrates: Nitrates (such as nitroglycerin, isosorbide dinitrate, and others used to treat chest pain or heart conditions) can interact dangerously with sildenafil. Combining Fildena CT 100 with nitrates can cause a severe drop in blood pressure, leading to dizziness, fainting, or even a heart attack. Always avoid taking Fildena CT 100 if you are on any nitrate-based medication. Alpha-blockers: Alpha-blockers (such as doxazosin, tamsulosin, or prazosin, which are used to treat high blood pressure or symptoms of an enlarged prostate) can also cause a significant drop in blood pressure when taken with sildenafil. This may cause dizziness, lightheadedness, or fainting, especially when standing up suddenly. If you are prescribed an alpha-blocker, your doctor may adjust the dose of Fildena CT 100 or recommend a different treatment plan. Other Erectile Dysfunction Medications: Do not take other ED medications (like tadalafil, vardenafil, or other sildenafil-based drugs) at the same time as Fildena CT 100. Taking them together can increase the risk of adverse effects. Antifungal Medications: Azole antifungals (such as ketoconazole or itraconazole) can increase the levels of sildenafil in your body, increasing the risk of side effects. If you need to take an antifungal, your doctor may adjust your dosage of Fildena CT 100. Antibiotics: Macrolide antibiotics (such as erythromycin and clarithromycin) and HIV medications (like ritonavir) can also increase the concentration of sildenafil in your bloodstream, which can lead to an increased risk of side effects. Blood Pressure Medications: If you are taking medications for high blood pressure (like ACE inhibitors, beta-blockers, or diuretics), combining them with Fildena CT 100 can cause a drop in blood pressure. However, this combination may be safe in some cases, depending on your overall health. Be sure to follow your doctor's guidance. Ritonavir and Other Protease Inhibitors: Protease inhibitors (used to treat HIV) can significantly increase the concentration of sildenafil in the blood, which can increase the risk of serious side effects. Talk to your doctor if you're using these medications. Medications that may require caution with Fildena CT 100: Antidepressants (SSRIs, SNRIs, etc.): Some antidepressants may cause a slight decrease in blood pressure when taken with sildenafil. This may increase the risk of dizziness or fainting, especially when standing up quickly. If you’re taking antidepressants, discuss with your doctor how to manage both conditions safely. Antacids: Antacids can delay the absorption of sildenafil in some cases, potentially making Fildena CT 100 less effective. It's usually best to take Fildena CT 100 before meals, as food and antacids can affect how well the medication works.