The medication cannot be used concomitantly with Cimetidine that is a H2 histamine receptor blocker as it has the tendency to elevate the level of the sildenafil citrate in the blood and cause more adverse effects of Viprogra Soft 100 mg.
If the person is taking Amlodipidine, a calcium channel blocker, the use of concomitant sildenafil citrate (Viprogra) is likely to cause severe reduction of blood pressure. The use of protease inhibitors such as Saquinavir and Ritonavir along with the medication can lead to enhanced levels of sildenafil in the blood leading to the higher incidence of adverse effects of Viprogra Soft 100 mg.
Lisinopril that is an ACE inhibitor when combined with sildenafil citrate (Viprogra Soft 100 mg) can lead to a huge reduction of the blood pressure.
The blood pressure can have a drastic reduction if the person who is on alpha blockers such as tamsulosin or doxasozin takes sildenafil citrate (Viprogra) simultaneously. The use of concomitant macrolide antibiotics like erythromycin with Viprogra can cause alterations to the way sildenafil citrate is metabolized.
The use of Viprogra Soft 100 mgwhile the person is on nitrates can cause severe and life-threatening complications like radical drop in the blood pressure and also cause episodes of fainting.
The use of antifungal medications such as miconazole, itraconazole or fluconazole along with Viprogra can cause changes to the metabolism of sildenafil citrate.
The changes to the efficacy and the safety of combining sildenafil citrate with other PDE5 inhibitors like Vardenafil? or Tadalafil? has not been sufficiently studied. Hence, their use in combination is not advisable.
If the person is already taking some herbal supplements such as herbal Sildenafil citrate or any such supplements to counter erectile dysfunction, it is important to inform the doctor while seeking advice on taking sildenafil citrate (Viprogra Soft 100 mg).