According to Vicks the ingredients for their Liquicaps are as follows:
Active Ingredients (in each LiquiCap) (Purpose)
Acetaminophen 325 mg (Pain reliever)
Doxylamine succinate 6.25 mg (Antihistamine)
Phenylephrine HCl 5 mg (Nasal decongestant)
Inactive indredients: FD&C Blue No. 1, gelatin, glycerin, polyethylene glycol, povidone, propylene glycol, purified water, sorbitol special, titanium dioxide
The ingredients for the regular Nyquil are:
Active Ingredients (in each 15 ml tablespoon) (Purpose)
Acetaminophen 325 mg (Pain reliever/fever reducer)
Dextromethorphan HBr 15 mg (Cough suppressant)
Doxylamine succinate 6.25 mg (Antihistamine)
Inactive Ingredients:
Soothing Original: acesulfame potassium, alcohol, citric acid, D&C Yellow 10, FD&C Green 3, FD&C Yellow 6, flavor, high fructose corn syrup, polyethylene glycol, propylene glycol, purified water, saccharin sodium, sodium citrate
Soothing Cherry: acesulfame potassium, alcohol, citric acid, FD&C Blue 1, FD&C Red 40, flavor, high fructose corn syrup, polyethylene glycol, propylene glycol, purified water, saccharin sodium, sodium citrate
So in comparing the to, no, alcohol is not listed in the liquicaps.