Under that definition, Benefiber would be considered gluten free. Benefiber only recently started using wheat dextrin instead of hydrolyzed guar gum. The change was made to increase the amount of fiber. For most of the five years your husband took Benefiber, it contained the guar gum, which is gluten free.
Hire a sheriff or process server to serve the divorce papers on your spouse. You can use the sheriff or a server in your county if your spouse lives there. If he lives in a different county, you will need to have a sheriff or server in that county serve the papers.
Or, anyone, like a friend, can serve the papers. But, the person serving the papers must be 18 years old or older. A party can go with the person serving the papers when they are served. In NYC, the person serving the papers is not allowed to serve more than five papers each year.