Sildenafil Citrate 50 MG Tablet Health Feed

Please avoid sildenafil because of its side effects
better to go with herbal treatment that is safe and effective as well
vrihad vangeshwar ras 125 mg twice a day
kamdev avleh 10 gm twice a day
relief in 5-6 days and for complete cure take it for 60 days only
avoid oily and spicy food.

No it may not be.
Better take homoeopathic treatment.
You can consult me at Lybrate for homoeopathic treatment.

Sildenafil citrate tablet side effects
flushing (sense of warmth in the face, ears, neck and trunk)
headache
blurred vision
muscle pain
stomach upset
vision changes
rash
there are exercises a man can carry out to reduce the effects of ed.
The best way to treat erectile dysfunction without medication is by strengthening the pelvic floor muscles with kegel exercises. These are often associated with women looking to strength en their pelvic area during pregnancy,...more

Sildenafil increases the blood supply and estrodiol primes the endometrium.
Both helps in implantation of fertilised egg not harmful and it's needed.

Non-invasive treatments are often tried first. Most of the best-known treatments for ed work well and are safe. Still, it helps to ask your health care provider about side effects that could result from each option:
oral drugs or pills known as phosphodiesterase type-5 inhibitors are most often prescribed for ed (viagra, cialis, levitra, stendra)
testosterone therapy (when low testosterone is detected in blood testing)
penile injections (ici, intracavernosal alprostadil)
intraure...more

There are many conventional allopathic sexual pills in market such as Adegra, Viagra, Penegra etc. Refrain yourself from using such pills as those pills contain a steroid called SILDENAFIL. This steroid has a unique temporary effect on erectile problems. Patients using these pills for first time often report that their penis remain strong even after ejaculation. Such effects leads the patients to use SILDENAFIL for prolonged course of time as they often feel that a full erection is possible only...more

If you have both disorders as confirmed by a doctor then you can take both. Otherwise it will add to cost and side effect burden.

No
take one of t hem only. Tab. Tadalafil to be taken in
evening with water
sildenafil to be taken one hour before sexualactivity.

Sidenafil has no use on premature ejaculation. Consult privately for safe and herbal medicine to prolong sex.

Ican suggest you homoeopathic treatment for erectile dysfunction
and answer to your question is it takes 1.5-2 hrs or sometimes it may take long.