Review on The Ultimate Gum Solution: Single Strength Formula for Natural GumCare - Relieve Canker Sores, Swollen Gums, Bad Breath, Tooth Aches! Protects Against Plaque & Tartar - Gum Care Wash by Aurora Lowe

I have purchased 4 packs of Ultimate Gum Solution from Revain on two separate occasions. The first set of 4 bottles were imprinted with Ultimate Gum Solution in white. I finished the white bottle with the character as shown in the photo and the solution worked really well on my gums. The second set of 4 bottles said Ultimate Gum Solution in red letters. The taste of white character bottles was bitter. The taste of the red character bottles was slightly sweet. So far the white character bottles seem to have been better. Has the formula changed?