Little attention has been paid to endocrine factors. Sexual activity, with or without sildenafil Viagra increases the chance of an MI during sexual activity by only 0. While the sale remains subject to a consultation with a pharmacist, the other restrictions from the trial have been removed, allowing customers over the age of 18 to purchase an unlimited number of pills. Seven of these companies are based in India. Plus, you get free shipping on orders of 10 pills or more! Males between the ages of 30 and 65 would be eligible to buy four tablets after a consultation with a pharmacist.For local pharmacy pickup, pay online and you will receive a Blink card. Go to any of our participating pharmacies, show your Blink card to the pharmacist and pay $0 at the counter. Make sure the pharmacy has your prescription from your provider. Prefer to get start over the phone give us a call 1 () – Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud’s phenomenon. [9] It is unclear if it is effective for treating sexual dysfunction in females. [8]. Vardenafil (Levitra) is almost 10 times more biochemically potent than sildenafil, therefore a lower dose is needed to facilitate the penile erection, potentially resulting in less side effects. Selectivity is the ability of the drug to attach to the specific enzyme PDE 5 found in penile tissues. Vardenafil (Levitra) is more selective than.