5 Supplements to Boost Your Immune System

by | Nov 29, 2016 | Health Articles, Herbal Medicine

Sometimes we need an extra boost to help our immune systems ward off sickness, and there are plenty of great herbs and nutrients for us to explore. Here are 5 supplements to boost your immune system!

Ever wondered which supplements are best for strengthening our immune system and preventing (or warding off) cold and flu? There are plenty of great herbs and nutrients for us to explore, and these are my favourites for keeping stocked up.

Note: This post is NOT to be substituted for medical advice. Always consult your healthcare practitioner for specific recommendations that are unique to you, since some supplements can have contraindications with other supplements or medications. This post is only intended to explore the options available to help you make the best choice for you.

For the best immune-boosting foods to eat, be sure to check out this blog post here.

Vitamin C

Vitamin C is one of my favourite supplements because it’s anti-everything: It’s antibacterial, antiviral, anti-inflammatory, and a potent antioxidant. As such, it’s excellent for fighting infection and supporting your body during times of stress or illness.

Vitamin C is best taken in divided doses throughout the day for best absorption. Always speak to your natural health practitioner for the appropriate dose for you.


Although there are plenty of food sources of friendly bacteria (such as yogurt and sauerkraut), sometimes a supplement that provides higher doses of beneficial bacteria is needed, especially for those with digestive concerns, weakened immune systems, frequent cold and flu, or antibiotic use.

One of my favourite probiotic brands is Genestra and their human-strain HMF line for improved colonization and withstanding stomach acid.

Vitamin D

Vitamin D is a whole bunch of cool things. It actually acts as a hormone in the body and plays many important roles in the body including assisting calcium absorption, cancer prevention, supporting mental health, and of course, immune function. Vitamin D helps activate T cells in our body, which seek out and destroy different bacteria and viruses that can cause colds and flu.

Vitamin D supplementation is especially important for those of us living in cooler climates with less sun exposure throughout the year. Check out my blog post on The Importance of Vitamin D for more detailed information on all its benefits and uses.

Oil of Oregano

If you don’t yet have a bottle of oil of oregano on hand, this one is a medicine-cabinet essential. Oil of oregano is one of nature’s most powerful antibiotics and is great for the onset of a cold.

Oregano oil is strong! To avoid burning your mouth, simply add a few drops into a small glass of water. Alternatively, oil of oregano can be rubbed onto the bottom of the feet — this is especially useful for kids.


Not only does zinc play a role in wound healing, hormone balance, and the health of our gut and skin, it’s also excellent for promoting a healthy functioning immune system. It’s great for cold and flu and helps to reduce the severity and duration of the common cold.

Because zinc and copper compete for absorption in the body, zinc should be taken alongside copper if supplemented long-term. For the appropriate dose for you, be sure to speak with your natural health practitioner.

by Meghan Livingstone

Note: this post may contain affiliate links. Learn more here.

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  1. Elisabetta

    Hi Meghan! I was wondering if is there any food that I can buy that contains probiotics?

    • Meghan

      Hi there! Yep there are plenty. Fermented foods like sauerkraut, kimchi, yogurts (I like dairy-free yogurt like coconut), or kombucha are some great options. xx

      • Lyn

        Isn’t oil of oregano one of those “touchy” supplements? In other words, you shouldn’t take it with certain vitamin/supplements or meds and you don’t want to take too much of it?

  2. Nae

    Is it okay to zinc and oregano oil together?

  3. Janae Truesdale


    I read that taking oil of oregano and zinc together can effect Zinc’s absorption. May you confirm?



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Hi, I’m Meghan. I’m a Certified Holistic Nutritionist, blogger, and YouTuber with a passion for healthy, simple living. I’m here to inspire you to listen to your body, eat mindfully and wholesomely, and create a fulfilling life that’s completely unique to you.