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Double Action Effervescent

Redoxon · Supplements · 1000mg C + 10mg zinc · vitamin C + zinc
4.63rd party testedstrong evidence
6.5of 10
Redoxon Double Action Effervescent
where to buy · 4 sellersfrom S$15S$0.50 per serving
Good for: immunity. Weaker case for energy.

The score explained

evidence, testing and value, weighed before price

Why 6.5 of 10: Provisional: sound pairing, convenience-priced format.

what’s good
  • Combines the two best-evidenced cold nutrients
  • Every SG pharmacy and supermarket
  • Pleasant compliance
worth knowing
  • Fizz costs several times tablet equivalents
  • Same no-prevention caveat as all vitamin C

what the evidence says

The C-plus-zinc pairing is reasonable: vitamin C modestly shortens colds with regular use, and zinc, particularly started early in a cold, has decent evidence for cutting duration. The effervescent format is a compliance device you pay for. As with all of this category, think shorter colds, not fewer colds.

Plain-language assessment of the human evidence. No cherry-picked citations.

reviews

4.6· 8,900 reviews, aggregated

Most reviewers take it for immunity and report it doing its job quietly. Ratings cluster around 4.6 stars across retailer sites, with few complaints beyond shipping.

immunityeasy to tolerategreat value
AI summary of public reviews

Stack this with

NOW Foods Vitamin C-1000SupplementsNOW Foods Vitamin C-1000Both target immunity. NOW Foods Vitamin C-1000 covers the nutrient side of immunity, a cheap daily base under everything else you do.NOW Foods Zinc Picolinate 50mgSupplementsNOW Foods Zinc Picolinate 50mgBoth target immunity. NOW Foods Zinc Picolinate 50mg covers the nutrient side of immunity, a cheap daily base under everything else you do.Minmed Vitamin D TestTestingMinmed Vitamin D TestBoth target immunity. Minmed Vitamin D Test gives you a baseline for immunity before you spend more on fixes.