Principle Immune Boost+ is an orange-flavored effervescent supplement containing Vitamin C (1000mg) and Zinc (15mg) to support immune system function. The convenient one-a-day formula comes in a tube of 20 tablets that dissolve easily in water. This is a dietary supplement that should be taken as one tablet dissolved in water daily. The effervescent tablets provide a refreshing orange-flavored drink. The product is manufactured in the UK as indicated by the British flag on the packaging. The product contains key immune-supporting nutrients in an easily absorbable form. As this is a supplement product, no specific therapeutic claims are made.