1. Blood Pressure Effects:

   • Both Cresar H and Viagra can lower blood pressure. Combining them may cause your blood pressure to drop too low, leading to dizziness or fainting.

2. Consult Your Doctor:

   • Discuss this combination with your healthcare provider. They can assess your overall health, blood pressure control, and any other medications you might be taking.

3. Monitoring:

   • If approved by your doctor, they may recommend monitoring your blood pressure closely when starting Viagra.

4. Metformin:

   • No direct harmful interactions with Viagra, but your doctor will consider your complete health profile.

Summary:
While Viagra can be used with Metformin and Cresar H, it should only be done under medical supervision to ensure safety and avoid adverse effects. Please consult your healthcare provider before starting Viagra.