I am not saying they did, I am not saying they didn't..
But the margin between Health Up and Pepsis is pretty, well, almost "zero". You might argue that Health Up used "me3na" or meaning and Pepsi used "taste" but in slang it means "meaning", and Health Up used "meaning" which in slang... Sigh. Yes, Pepsi are just off the airwaves, so Health Up could have at least looked out the window.
Blink and you'll miss it. No seriously, took me about 6 trials just to take one screen shot so much the ad is quick - and see how quick it is, the bottom timer scroller is still on. But apart from "open and win" (yes, I know, the 90s called and they want their offer back), Pepsi which is now solo in the market now that Coca-Cola quit the Lebanese market (here) and which held strong among the Gaza callouts (apparently Pepsi was in the Israeli team), does not do much ads (see their last all-star pan-Arab encompassing one - here) on the Lebanese scene. So this one came a bit out of nowhere - can't link the full ad as it is just one of those several seconds before youtube videos. Still, the above is the packshot.
Now the headline is a bit peculiar - "the zero now has a taste" which is akin to shooting yourself in the foot (meaning the old one did not have a taste at all?) "original taste, zero sugar". Once more, a little strange, but I guess who cares, as if all else is logic in Lebanon!