Herbal Choice Glucose Blocker Tea in a box of 20 tea bags is a Caribbean herbal blend in the wellness-tea tradition. The 40g pack contains tea bags ready to brew; steep in freshly boiled water for 4 to 5 minutes. Caffeine-free; best taken without sugar to let the herbal character come through. As with any herbal tea, this is a drink to enjoy as part of a varied diet, not a substitute for medical advice. Herbal Choice is a UK Caribbean tea brand offering everyday Caribbean herbal blends at sensible prices.