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4Optional

Greens powders

Also sold as Green powder, superfood powder

Cannot replace vegetables. Fibre and volume don't survive the process.

TrustedSupp Tier System™ · Tier 4Take by choice, or not at all
Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.

Evidence strength

18/100Weak
WEAKLIMITEDMODERATESTRONGVERY STRONG

What the evidence supports: very little; most trials are short, small, and manufacturer-run.

This scores how well-supported the claim above is — not how much benefit you personally would get. A high score on a narrow claim does not extend to everything the product is marketed for.

How long to take it

No established course.

Who it's actually for

Convenience for people who won't eat vegetables — a distant second best.

Safe upper limit

Unverified
Not applicable; check the vitamin K content
Many contain enough vitamin K to disrupt warfarin control, and proprietary blends hide the actual amounts.
No source or citation attached yet.

Interactions to know about

Other supplements:

Run your full list through the interaction check.

Practical notes

  • 'Proprietary blend' means you cannot know the doses.
  • If you take warfarin, check the vitamin K content before starting.