Mrs. Winslow's Soothing Syrup was aggressively marketed to young mothers with cranky babies. Its active ingredient was morphine. Muckraker-era reformers had a special ire for that product, which they credited with helping mothers unwittingly raise a generation of dope fiends.
And yes, Rattlesnake Girl- that was most likely a champagne bottle. I'd wager that you will find no mold seam going up from the base to the shoulder of the bottle. They were manufactured from the 1800s into well into the 20th century using a turn mold. Whilst the glass was still molten, the glassblower rotated the bottle slightly to erase mold seams.
Bit of bottle-related trivia - the natural color of glass is aqua or greenish, depending on the mineral content of the sand used in making the glass.
Glass is made colorless by adding manganese. (Interesting thing is manganese absorbs UV rays. Old clear glass left in the sun for a long time turns an amethyst color).