If you experience severe side effects from Sildisoft Tablets (which typically contain sildenafil, a medication used for erectile dysfunction), it is important to take the following steps:

1. Stop taking the medication: If you experience severe side effects, stop taking Sildisoft Tablets immediately, but do not stop any prescribed medication without first consulting your doctor.
   
2. Seek emergency medical attention: Severe side effects could include:
   
   • Chest pain or a heart attack
   • Priapism (painful and prolonged erection)
   • Sudden vision loss or any changes in vision
   • Severe dizziness, fainting, or irregular heartbeat
   • Severe allergic reactions (rash, swelling, difficulty breathing)
   If you experience any of these, call emergency services or go to the nearest emergency room.
   
3. Contact your healthcare provider: Even if the symptoms are not immediately life-threatening, it's crucial to contact your doctor for advice. They may suggest an alternative treatment or adjust your dosage.
   
4. Provide detailed information: When you contact a healthcare professional, be sure to provide them with all the details about your condition, including the dose you took, any other medications you are taking, and when you started experiencing side effects.
   
5. Do not take additional doses: Avoid taking more of the medication until you have spoken to your doctor.
   

Severe reactions to sildenafil, like the ones listed, are rare, but prompt action is essential. Your healthcare provider can guide you on the best course of action, including adjusting your treatment or monitoring for long-term side effects.