Viagra is taken only when needed, usually 30 minutes to 1 hour before sexual activity, although you may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day. Viagra should be taken exactly as prescribed by your doctor and avoid taking in larger amounts or for longer than is recommended.
A dose of 100mg should be taken as needed, approximately 1 hour before sexual activity. However, Viagra may be taken 4 hours and a half hour before sexual activity. The dose can be increased to a maximum recommended dose of 100 mg. The highest dosage for Viagra which is recommended by medical experts is 100mg and we also have for you an Kamagra (sildenafil).
The following aspects are linked with increased plasma levels of sildenafil: age >65 (40% increase in AUC), hepatic impairment (e.g., cirrhosis, 80%), severe renal impairment (creatinine clearance < 30 mL/min, 100%), and concomitant use of potent cytochrome P450 3A4 inhibitors [ketoconazole, itraconazole, erythromycin (182%), saquinavir (210%)]. Since higher plasma levels may increase both the efficacy and incidence of adverse events, a dose of 25mg should be considered for patients.
Ritonavir greatly increases the systemic level of sildenafil in a study of healthy, non-HIV infected. Based on these pharmacokinetic data, it is recommended not to exceed a maximum single dose of 25mg of Viagra in a 48 hour period.
Benefits of Viagra
It can improve your sex life, relationships and even stress and depression levels.
It improves confidence and takes away ‘performance anxiety’, which can contribute to erectile problems.
It can increase your chances of being able to have erections naturally in the future.
It is widely available on the NHS. Once you have been assessed by your GP and you know that you are suitable for the medication, Viagra can be purchased via the internet from many different reputable websites to choose from at a discounted price.
Has benefited many men with heart disease who were previously unable to take their heart medication without causing the side effect of erectile dysfunction.
The Benefits of Viagra for Women
There are numerous benefits which Viagra can have for women; the main ones are listed below.
Significantly boosts libido.
Increases sensitivity to sexual stimulation.
Increases the chances of having an orgasm and increases the chance of having multiple climaxes.
It can help women retain a satisfactory sex life though the menopause.