Medicine Data Sheet for Health Professionals
http://www.medsafe.govt.nz/profs/Dat.../avigratab.pdf
Consumer Medicine Information
http://www.medsafe.govt.nz/Consumers/cmi/a/avigra.pdf
The abovementioned datasheets are supplied by the NZ govt to the public.
Medsafe is the New Zealand Medicines and Medical Devices Safety Authority. They are responsible for the regulation of medicines and medical devices in New Zealand. They ensure that medicines and medical devices are acceptably safe. This department is controlled by the NZ government, without fear or favour.
NZ is extremely stringent on the control of illicit medical drug and local traders will face tough sentences, no buts about it. Gantong licence, hefty fine and jail time. No mucking around. So one can be rest assured of getting real generic drug here from reputable multinational companies or aurthorised pharmacies who wouldn't risk their necks for a couple of pennies saved.
Prescription medicines can't be simply bought off the counter without a qualified GP script. No way one can get them under the counter.
A box of Avigra 16 x 100 mg goes for about NZ$80 (about spore$ 1:1). So is it expensive...I don't know. But definitely something that ain't going to ruin your health uneccessary. You know you are getting them as original and certified by Pfizer, a world renowned pharmaceutical multinational company, maker of Viagra.
Makers of generic ed drugs appearing all over the internet are cashing in, claiming wonders. No doubt it will wake the johnny, because of the minute sildenafil, or tadalafil or vardenafil added, but what about the rest of the compound like binder, filler, sealing powder, colouring, solubiliser, stabilizer, dosage and what not. Do they put in lactose or cellulose powder, corn starch, flour, clay? I doubt they will spend millions on R and D.