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Harker Herbals

Immune Boost

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Boosts and builds strong immunity and supports increased energy levels. Great for every day use to support long term recovery and those prone to repeat illness and feeling rundown. 

  • Supports strong immunity and healthy energy
  • Useful everyday support for those prone to repeat illness, low energy and feeling rundown
  • Useful added support when recovering from illness.
  • Includes Astragalus, Echinacea and Siberian Ginseng, which clinical research shows supports strong immune systems
  • Natural lemon flavour
  • Free from gluten, dairy, alcohol and preservatives
  • Suitable for adults and young adults over 12 years
  • Safe in pregnancy and breastfeeding
  • Can be taken long term

Indicated for:

  • Repeat illness and infections
  • Feeling rundown, fatigue and low energy
  • Building resistance to viral and bacterial infections

Recommended adult dosage (over 12 years):

Stay well: To boost and build immunity, take 5ml two to three times daily OR take a single dose of 10–15ml once per day if preferred. Take long-term for best results.

Get well: To support recovery from illness and low energy levels, take 5ml three to four times daily. If acutely unwell, take Harker Herbals Vira Guard.

Active ingredients in each 5ml dose:

WITHANIA root 205mg

ECHINACEA  root 436mg

ASTRAGALUS root 865mg


REISHI  384mg

Base ingredients: In a base of chicory root fibre, vegetable glycerine, natural flavours, citric acid and water

This low sugar formulation contains less than 0.66g of sugar per 5ml dose.


If taking prescribed medication, we recommend seeking professional medical advice before taking or products.

Safe in pregnancy and while breastfeeding

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