Brief Answer:
Seems ok, get a consult for safety

Detailed Answer:
Thank you for asking!
Viagra / sildenafil is PDE5 inhibitor and ED aid. It has no interaction with the medicines you mentioned so it can be taken safely with them. Just have a look at the blood pressure monitoring as sildenafil itself cause vasodilation and reduce blood pressure.If you don't have any anatomic deformation of penis (eg, angulation, cavernosal fibrosis, or Peyronie's disease), or conditions potentially predisposing to priapism (eg, sickle cell anemia, multiple myeloma, or leukemia), cardiovascular disease, bleeding disorders, active peptic ulcer disease, liver disease, renal impairment, multidrug antihypertensive regimens, retinitis pigmentosa, concomitant use of CYP3A4 inhibitors then it is good to go.
I suggest you visit a gp and let them give you a green signal after thoroughly assessing the complete history and clinically correlation. COnsult a sex therapist and let them devise a plan for erectile dysfunctions and provide you other options than sildenafil like vacuum devices, topical applicants, and revascularizations etc.meanwhile controlling diabetes, heart disease, and hypertension
and Lifestyle modifications to improve vascular function (eg, not smoking, maintaining ideal body weight, and engaging in regular exercise) will help.
I hope it helps.Take good care and don't forget to close the discussion please.
Regards
S Khan

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