If you have certain allergies, you should be cautious when considering Vidalista 20 mg (which contains tadalafil, a medication used for erectile dysfunction) and consult your healthcare provider before using it. Here are some conditions and allergies that may require you to avoid Vidalista 20 mg:

Allergy to Tadalafil or Similar Medications: If you are allergic to tadalafil or any of the ingredients in Vidalista (such as excipients), you should avoid taking it. Symptoms of an allergic reaction may include rash, itching, swelling (especially of the face, tongue, or throat), severe dizziness, or difficulty breathing.

Allergic Reaction to Nitrites or Nitrates: If you are allergic to nitrates or have a history of reactions to medications like nitroglycerin or isosorbide dinitrate (commonly used for heart conditions), you should avoid Vidalista. Taking tadalafil with nitrates can cause a dangerous drop in blood pressure.

Severe Allergies to Other Medications: If you have severe allergic reactions to medications used for erectile dysfunction (e.g., sildenafil or vardenafil), you may be more likely to have an allergic reaction to Vidalista. Your doctor can help assess the safety of using tadalafil.

Respiratory Allergies: If you have a history of severe respiratory issues or conditions such as asthma, bronchitis, or chronic obstructive pulmonary disease (COPD), consult your doctor to ensure tadalafil won't exacerbate symptoms.

Kidney or Liver Allergies or Sensitivities: If you have known allergies or sensitivities to medications metabolized by the liver or kidneys, tadalafil may not be suitable. Tadalafil is processed by the liver, and if you have liver or kidney disease, it could affect how your body handles the drug.

Other Conditions or Drug Interactions: Vidalista should not be combined with certain medications, including those for HIV (protease inhibitors), certain antifungals, or some antibiotics. If you have allergies to these or any other medications, discuss your options with your healthcare provider.