In 3 words!!
No!
DR. pauling would disagree, few vitamins have the multiple effects of vitamin c.
i would take 3-5 grams of ascobate based from minerals a day, numerous studies have shown the beneficial effects on inflammation, and immune function not to mention its very high on the ORAC.
for fish oil, the poisoning everyone is referring too is from heavy metals namely mercury. i would just get some good quality fish oil, perhaps genuine health which is a good company. krill is good but fuck doctor mercola

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if you have an existing problem like allergies, asthma, colitis etc where inflammation is the main component(as it is in every disease, even CHD) i would suggest 3 grams of EPA and 2 of DHA or around 10 grams of fish oil a day. fish oil(or the o3 components) have strong inhibitory effects on leukotrienes which mediate the inflammatory response made from AA. supplementing with fish oil will suppress these inflammatory cytokines and offer alot of releif. also any inflammation in general.
i would also suggest adding some GLA to the mix via borage or black current, primrose as it has synergistic effects with DHA,EPA. also if possible try to get one with all three and DPA, a precursor to DHA.