The main active ingredient in black viagra 200 mg is sildenafil citrate. You should not drink alcohol or take any drugs while taking this medicine. Alcohol can heighten the effects of the medication, making them worse. Some people experience dizziness when taking sildenafil.
The drug also contains soluble guanylate cyclase, which is a type of nitrate-vasodilator. Taking this drug can increase the hypotensive effect of the drug, especially if you are taking it with a nitrate-containing medication.
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An overdose can cause serious health complications. To prevent this, you should take your dose at the first sign of an allergic reaction or if you think you have overdosed, contact your physician.
While taking the medicine, you may feel some side effects such as swelling of the lips, face, or limbs. The drug may also cause some painless vision loss. Other potential adverse reactions include difficulty distinguishing blue and green colors.