Do any supplements help with gum disease or periodontitis?

Tea, both Gren Tea and Black Teas has been proven to reduce cavities, reduce mouth bacteria and promote healthy gums.

I find that brushing with turmeric powder twice a day keeps my gums in pretty good condition.
Also I take 2 multi Vitamin C capsules made by Pukka - and if I don’t take these my gums always get a bit sore after two or three days, even when using the turmeric, so I know when I have forgotten to take them.
Please be aware that Turmeric doesn’t stain teeth, but it can stain clothing, and I have no financial interest in Pukka Herbs.

To help with inflammation of the gums, I have found taking Quercitin and Bromelain
on an empty stomach lessens the inflammation. Also, taking HCL after meals really
cuts down the plaque from forming.

I have gum disease. My gums did bleed every time I brushed. I used the herb Blood Root. It stopped the bleeding.

I am 61. Exercise twice week hard move daily, expert skier. Have taken daily for several years. 1 gram vitC, live force multi,magnesium,msm,astaxanthin 4mg, vit D 5000 ui,with super K2 complex,100mg Ubiquinol. It is the vit D and the Ubiquinol that I atribute to the lowering of my gum disease scores at my dentist. My teeth are better than when I was 40. I am now experimenting with a extra divided dose of 4000 ui vit D. I have recently had blood and vit D (25HY) test

Personal experience, and that of my clients, indicates that a strong solution of xylitol in water, used as a mouthwash several times a day, can be incredibly beneficial, even if gum surgery is imminent