When did US pharmacies first stock generic Viagra?
Monday, 11 December 2017. Teva's US launch notice is dated that day. A 2013 patent settlement had set the calendar. Before that Monday, a US ED fill on this INN was brand Viagra.
More makers followed after the first wave. The board dates the switch from that December morning, not from a later rumor year.
Did the first generics cover 25, 50, and 100 mg?
Teva's launch listed those three tablet strengths. Greenstone's authorized generic listed the same three. That is the whole US ED ladder, not a single 50 mg teaser.
A script that says 100 mg can be filled as generic 100 mg when substitution is allowed. It does not become a 50 mg Connect-style pharmacy pack. UK Connect is a different legal lane; see the Connect scan.
What stays on the US label after a generic fill?
Start 50 mg for most adults, window 30 minutes to 4 hours, once per day, nitrates off, stimulation required. Those lines did not expire in December 2017.
Full card after the 2017 swap sits on the sildenafil panel. This scan only dates the generic arrival and keeps the three rungs in view.
Does a generic tablet keep the same food delay?
High-fat meals still delay Tmax about 60 minutes and cut Cmax about 29 percent. That paragraph travels with sildenafil, not with the brand stamp. Rate the plate on the meal-tag signal before you rate the DIN.
A late peak after a burger is a clock problem. Climbing to 100 mg to punish a generic color is a sloppy rating. The food scan keeps the two numbers.
Is pulmonary 20 mg the generic on this ladder?
No. Revatio-style 20 mg three times a day is a pulmonary product. ED generics on this board are 25, 50, and 100 mg as needed, once per day. Do not stack the two products.
If the bottle says 20 mg and TID, you are not on the Viagra ladder. Bring both packages to the pharmacist before anyone adds an ED swallow on top.
Why can the tablet look different after 2017?
Brand Viagra is a blue rounded diamond with a Pfizer / VGR stamp. Generic film coats use other shapes and imprint codes. The INN and the milligram still have to match the script.
A color change after substitution is not a new food rule and not a reason to jump a rung. Two matched nights at the same milligram beat a memory of 1998 branding.