Potassium is a mineral found widely in fruit, vegetables, potatoes, beans, fish and dairy. This page sets out what may be said about potassium under the authorised UK wording and which foods carry the most of it per 100 g.
Potassium is a mineral found widely in fruit, vegetables, potatoes, beans, fish and dairy.
The reference intake used on UK labels (the NRV) is 2000 mg a day. A food is a source of potassium when 100 g carries at least 15 % of that (300 mg) and high in potassium at 30 % (600 mg). Those are the thresholds every food page here uses.
What Potassium does in the body.
Potassium contributes to normal functioning of the nervous system and to normal muscle function.
Potassium contributes to normal functioning of the nervous system and to normal muscle function.
That is the authorised wording, and it is credited to the nutrient itself. Nothing on this page goes beyond it.
How much counts as a source.
The Nutrient Reference Value for potassium on UK labels is 2000 mg a day. A food counts as a source of potassium at 15 % of that per 100 g (300 mg) and as high in potassium at 30 % (600 mg); drinks use half those percentages per 100 ml. Those are the thresholds every food page here applies, and the only basis on which a food page says “source of” or “high in”.
Foods with the most potassium, per 100 g.
Per 100 g, these are the foods in the database with the most potassium. Dishes and recipes are left out so the list shows single foods.
305 % of the NRV per 100 g. Full nutrition facts for Courgette, dried.
237 % of the NRV per 100 g. Full nutrition facts for Chervil, dried.
224 % of the NRV per 100 g. Full nutrition facts for Coriander leaves, dried.
217 % of the NRV per 100 g. Full nutrition facts for Spinach, dried.
205 % of the NRV per 100 g. Full nutrition facts for Parsley, dried.
194 % of the NRV per 100 g. Full nutrition facts for Mushroom, dried.
189 % of the NRV per 100 g. Full nutrition facts for Coffee, powder, instant.
172 % of the NRV per 100 g. Full nutrition facts for Basil, dried, ground.
166 % of the NRV per 100 g. Full nutrition facts for Dill, dried.
151 % of the NRV per 100 g. Full nutrition facts for Tarragon, dried, ground.
147 % of the NRV per 100 g. Full nutrition facts for Green beans, dried.
142 % of the NRV per 100 g. Full nutrition facts for Seaweed, nori, dried, raw.
101 % of the NRV per 100 g. Full nutrition facts for Breadnut seeds, dried.
100 % of the NRV per 100 g. Full nutrition facts for Pepper, cayenne, ground.
94 % of the NRV per 100 g. Full nutrition facts for Apricots, dried.
94 % of the NRV per 100 g. Full nutrition facts for Curry powder, mixed flavours.
93 % of the NRV per 100 g. Full nutrition facts for Flour, soya.
92 % of the NRV per 100 g. Full nutrition facts for Curry powder.
90 % of the NRV per 100 g. Full nutrition facts for Instant drinks powder, chocolate, low calorie.
90 % of the NRV per 100 g. Full nutrition facts for Beans, sword, raw.
Where Potassium comes from in food.
courgette (6104 mg), chervil (4740 mg), coriander leaves (4470 mg), spinach (4350 mg), parsley (4090 mg), mushroom (3870 mg), powder coffee (3780 mg), basil (3430 mg)
Potassium in the Immufix formula.
Potassium is not one of the nutrients declared on the Immufix label. The declared list is on The Science page.
Questions people ask.
Under UK labelling rules a food is a source of potassium at 15 % of the NRV per 100 g, which is 300 mg, and high in potassium at 30 %, which is 600 mg.
Where the numbers come from.
Food figures from the UK Composition of Foods Integrated Dataset (CoFID, 2021), per 100 g; reference values from Regulation (EU) 1169/2011 Annex XIII as retained in GB law; claim wording from GB nutrition and health claims register. Contains public sector information licensed under the Open Government Licence v3.0. All foods A to Z.
One scoop, every nutrient declared.
Every vitamin and mineral in Immufix, its amount per scoop and its share of the reference intake, is on The Science page.
See what’s in the scoop