We use both Vit C & GSE...and MSM, ginseng and cal/Mag and others at times..
Good quality products are important..
Supplement Rankings - Labdoor

[Scientific studies have shown that the antioxidant power of proanthocyanidins is 20 times greater than vitamin E and 50 times greater than vitamin C. Extensive research suggests that grape seed extract is beneficial in many areas of health because of its antioxidant effect to bond with collagen, promoting youthful skin, cell health, elasticity, and flexibility. Other studies have shown that proanthocyanidins help to protect the body from sun damage, to improve vision, to improve flexibility in joints, arteries, and body tissues such as the heart, and to improve blood circulation by strengthening capillaries, arteries, and veins.]
Polyphenolics in grape seeds-biochemistry and functionality. - PubMed - NCBI