Generic sildenafil may be ordered in packs of 14 and 28 tablets with a 50 mg dosage, while generic tadalafil is obtainable in packs of 9 and 18 tablets with a 10 mg dose. Shipping is fast, free, and discreet. The study, published in The Journal of Sexual Medicine in October, found that aerobic activities — such as walking or cycling — improved erectile function in all men with erectile dysfunction, regardless of body weight, overall health, or medication use. There are no in-person visits for medical treatment or obtaining prescriptions. One dosage every 24 hours is the maximum. Its effects often last for 4 to 5 hours.CHOOSE BRAND-NAME VIAGRA. The original little blue pill prescribed by doctors for over 20 years. Clinically proven to treat men with erectile dysfunction (ED) Ongoing commitment to product quality and safety monitoring. Treatments for erectile dysfunction are big business, and online scams abound. If you do buy medicines over the internet: Check to see if an online pharmacy is legitimate.  · 2. Rex MD – Free Viagra Samples. Rex MD is a men’s health-focused telemedicine service. They provide free prescription pharmaceutical samples for erectile dysfunction and hair loss and.