It may depend a bit on the type of zinc. The recommended daily amount of zinc is 8 milligrams (mg) for women and 11 mg for adult men. https://www.mayoclinic.org/drugs-supplements-zinc/art-20366112
Vitamin C dose related. https://lpi.oregonstate.edu/mic/vitamins/vitamin-C#cardiovascular-disease-prevention Lysine dose related. https://pubmed.ncbi.nlm.nih.gov/30661148/
This made me curious so I started searching on different types of plaque that cause blockages and what is lysine effective on. There are differences and I was not aware of this. Still, the limited published research on this topic indicates lysine and vitamin C are effective. Calcified plaques are Made up of mostly calcium and Less likely to cause a plaque rupture or heart attack. Lysine is primarily thought to be beneficial for reducing plaque buildup related to lipoprotein(a) (Lp(a)) in the arteries. There are articles the say it's helpful for calcified plaques. I would continue to take it if I was in your position. There's enough info to support taking it. I have been for almost a year now and it's an easy and inexpensive thing to do. It may help you in the long-term. I hope this gets better for you.
Rub a little dirt on it.