Sildenafil relaxes muscles and increases blood flow to particular areas of the body. Sildenafil under the name Viagra is used to treat erectile dysfunction (impotence) in men. Another brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women. Do not take Viagra while also taking Revatio, unless your doctor tells you to. Sildenafil may also be used for purposes not listed in this medication guide.
Sildenafil citrate 50mg dosage ).
Drug Interactions That May Have an Impact on Sexual Dysfunction
There are a few drugs that can worsen sexual problems, particularly those related to erectile dysfunction, but these can potentially be avoided by staying within the guidelines established by your doctor. This list is far from complete, but includes some of the more common drugs that interact with Viagra (and thus may worsen the sexual side effects of Viagra):
Clomipramine (an antihistamine for hay fever, colds, and flu; also can worsen erectile dysfunction)
Antihistamines should not be taken with Viagra (but they can be taken with sildenafil 20 mg dosage other antihistamine canada prescription drug list drugs) and should be taken as soon it is completely taken off the market (they are not typically available on the black market).
Antihistamines should not be used with Viagra during the entire time that it is available.
Antihistamines should not be used during the time after drug has been discontinued as they may be more likely to interfere with the effects of Viagra.
Aspirin can aggravate erectile dysfunction.
Phenytoin can be taken with Viagra but can increase sildenafil citrate 100mg tab dosage side effects of Viagra.
Quinidine (an antibiotic that can worsen erectile dysfunction)
Cimetidine (an anti-inflammatory that can worsen erectile dysfunction)
As a general rule, it is best to stop taking Viagra at least one month before the last dose, even if it is not clear what the effects of that last dose will be.
If you know will be taking certain medications with Viagra, it is best to stop taking Viagra immediately. These medications include:
Alcohol
Cough medicine
Cyclosporine
Anti-depressant medications
Anticonvulsants
Tetracyclines
Dihydrotestosterone (DHT)
Certain anticoagulants
Certain antidepressants
Vitamin B12 (vitamin supplements should not be taken with Viagra)
Vitamin D supplements
There are more drugs that have interactions with Viagra, and they are listed in the Viagra/drug interactions chapter, but it is best to look at this chapter and learn more about these drugs before taking Viagra.
Drugs to Consider After Viagra
After using Viagra, it is recommended to continue taking the medicine you should have been taking for the most recent sildenafil citrate dosage for pulmonary hypertension three months (the medicine should continue to work and be effective even after you stop taking Viagra). While this can help to avoid unpleasant side effects, it is not an absolute guarantee.
Possible drug interactions that may need to be considered are:
The following substances should not be taken with Viagra, even if they will not affect sexual functioning.
Antihistamines
Antibiotics
Proton pump inhibitors, like Prilosec (Zovirax, Abilify), and Nolvadex (Dilantin, Lexapro, Prevacid)
Inhibitors of prostaglandin and synthase (PGK) activity (for example, famciclovir, atazanavir, and so on)
Stimulants, like cocaine, amphetamine, and MDMA
Stimulants should not be taken with Viagra.
Clomipramine
Phenytoin
Clopidogrel
This medication is generally recommended for people taking any of the following medications:
Triptans
Tosetron
Vyvanse
However, some people have reported that taking these medications does not impact sexual functioning. Therefore, if you notice that taking the above medications does not improve sexual dysfunction, you may want to try another medication.
The following medications should not be used with Viagra as may interact these medications:
Cholesterol-lowering medications (such as statins and certain blood thinners such as warfarin)
Anticoagulants
Certain antibiotics
Proton pump inhibitors (for example, Prilosec, and Nexium)
Antihypertensives, like atenolol
Steroids such as prednisone
Hormone replacement therapy, including oral contraceptive pills (the pill), patches, injections, and implants
If you suspect that Viagra might be causing side effects that you do not understand, can always talk to your healthcare provider.
If you are taking other medications that increase the risk of side effects with Viagra, discuss them your healthcare provider.
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