Rite Aid brand Maximum Strength Tussin Cough & Cold Mucus Relief CF, (dextromethorphan HBr 10 mg, guaifenesin 200 mg and phenylephrine HCl 5 mg), 4 oz. package size, Distributed by: Rite Aid, Camp Hill, PA --- UPC Code: 0 11822 57307 8.
Presence of Precipitate; white substance confirmed as Guaifenesin, an active ingredient was observed in some bottles. If the product is shaken or warmed the white particles goes into the solution.
Nationwide in the US: MD, MI, AL, NC, CT, NY, PA, OR, WV.
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-419-2013