Vitamin C: How Much Do You Really Need

Last week I did a post about little known facts about vitamin C. This week I want to try to answer the question – How much do we really need?

The RDA for vitamin C is set at 90 mg a day for men and 75 mg daily for women. Besides being extremely important for immune function, this vitamin improves heart health, is a building block for collagen needed for skin, gastrointestinal and joint health, and has been shown to kill certain cancer cells among other functions.

Additionally, besides getting vitamin C from food sources, you can either take it orally in supplement form or have it administered intravenously. How you get it determines how much you need. When taken orally, which is typically the way most of us get it, intestinal absorption among other factors determines how much is actually concentrated in your blood. It’s also important to note that stress depletes vitamin C and who isn’t under stress these days? Taken intravenously bypasses digestion and absorption is more effective.

According to cardiovascular research scientist and doctor of pharmacy, James DiNicolantounio, optimal doses can be as high as 1,250 mg twice daily and while even 2.5 grams daily doesn’t necessarily produce full saturation, it still may have benefits.

Keep in mind that vitamin C is a water soluble vitamin so it is not stored in your fat cells. This is why it must be taken on a daily basis. Also some of what you take is excreted. Research has shown that bioavailability was effective and complete for a single 200 mg. dose. In those tested no vitamin C was excreted below a 100 mg. dose. So the conclusion was reached that the minimum effective dose should be 200 mg daily. The optimal dose will likely be much higher.

For example: you would need to take 1,250 mg. of vitamin C twice a day to achieve 80 μm; and 5 grams (5,000 mg) a day to achieve 250 μm. So even taking 2.5 grams daily doesn’t necessarily result in fully saturated vitamin C blood levels. Also it is important to note that it is more effective to take it in divided doses throughout the day rather than one large dose to get the best results. (μm represents cocentration in the blood.)

Years ago I had bioimpedance testing done that revealed my body required much more vitamin C than I was currently taking. And I thought I was taking a lot! Increasing my intake in divided doses to 4,000 mg. daily has helped me get some serious gum issues under control. When I am fighting off a cold or exposed to someone who is, I typically increase that to 1,000 mg. per hour throughout the day, or until I reach bowel tolerance, for a day or two.

Many naturopathic doctors recommend taking vitamin C throughout the day until you reach bowel tolerance, that is until you begin to experience diarrhea, and then back off a bit to effective amount for you.

My suggestion is to pay attention to your body and use vitamin C daily. It isn’t stored so you won’t overdose on it as you can with fat soluble vitamins. Particularly during cold and flu season, it’s important to get enough daily.

Do you supplement daily with vitamin C? Are you taking enough for optimal health benefits?

Want to see more articles like this?   Subscribe to this blog (just click on “Follow”) and get each new post delivered to your email or feed reader.  To follow me and get even more tips on how to live your life in 3-D, including improving your diet, choosing cutting edge nutritional products and effective weight loss strategies be sure to like me on Facebook here and here, sign up for my FREE weekly No-Nonsense Nutrition Report (and get a free gift!), follow me on Pinterest and Twitter!

Make gradual changes. Boost health, vitality and energy. Become your best YOU.      


About amusico

I am a holistic health coach and independent nutritional consultant. All my coaching plans are based on my 3-D Living program and a big part of that are the Youngevity Products and Supplements I proudly offer! Visit my website at and learn more about the products and my coaching plans!
This entry was posted in Uncategorized. Bookmark the permalink.

8 Responses to Vitamin C: How Much Do You Really Need

  1. So now the silly question is, “Is 1,000mg daily enough to make a difference, or is it person-dependent?” Thanks for always endeavoring to give us useful info. Apologies for being so “dense” sometimes. God’s blessings sweet lady.

    • amusico says:

      You are not being dense at all!! That is a very good question. The short answer is – yes, 1,000 mg daily is definitely enough to make a difference. However we are each unique with unique needs. I was taking what I thought was a lot (2,000 mg. a day) but my body needed double and then some to resolve gum issues. Keep in mind when you are fighting a germ or virus and also when stressed your body uses it up very quickly so you may need much more. And who doesn’t have stress? So most times 1,000 may be plenty for you, but at certain other times you may need to take more depending on what is going on. I hope that answers your question my friend and doesn’t confuse the matter more!

  2. debwilson2 says:

    “Also it is important to note that it is more effective to take it in divided doses throughout the day rather than one large dose to get the best results.” If I remember to take extra I usually do it all at once. Thanks for this! As always I learned something new from you, Ann.

  3. Holly Scherer says:

    So interesting about your gum issues, Ann. The human body is simply amazing. I’ll have to get bioimpedance testing done one of these days. Sounds like a very proactive way to stay healthy.

Share your thoughts - what do you think about this?

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s