Celery juice: a trend with no trial of its own

In a meta-analysis of 10 randomized trials with 511 adults, celery preparations lowered systolic blood pressure by a standardized mean difference of 1.0 (95% CI -1.85 to -0.14). Those preparations were mostly seed extracts, the result comes with no figure in mmHg, and the trials disagreed widely, so it tells you little about a glass of juice. No trial we found tests celery juice the way it is sold. An umbrella review of 15 systematic reviews on 100% juice found no eligible meta-analysis for vegetable juice at all. Celery carries nitrate, and nitrate from other sources does move blood pressure a little. Across 75 trials in 1,823 people, mostly with beetroot juice or nitrate salts, each extra millimole lowered systolic pressure by 0.24 to 0.48 mmHg. A separate meta-analysis of 19 trials found inorganic nitrate lowered systolic pressure by 2.42 mmHg in healthy people. In people with hypertension the fall of 0.82 mmHg did not reach significance (95% CI -2.53 to 0.90). The nitrate in celery varies widely, so none of these numbers converts into a dose per glass.

As people eat it, per 3.5 oz (100 g)

How much is actually in it

• US survey data list celery juice at about 17 calories, 97 mg sodium, 265 mg potassium and 29 micrograms of vitamin K per 3.5 oz (100 g). — US survey food composition Evidence C source
  Per 100 g: 17 calories, sodium 97 mg, potassium 265 mg, vitamin K 29.3 ug, vitamin C 3.1 mg, fiber 1.6 g
• In a double-blind challenge study of 16 celery-allergic patients, the celeriac cultivar Anita caused fewer symptoms than Prinz, which carried more of the allergen Api g 1. — 16 celery-allergic patients confirmed by DBPCFC (n = 16) Evidence B source
  Skin reaction 5.0 vs 7.0 mm (P = .047), fewer oral challenge symptoms with Anita (P < .001)

What a real portion looks like

• A 1-cup (236 g) glass of celery juice works out to about 40 calories, 229 mg sodium, 625 mg potassium and 69 micrograms of vitamin K. — US survey portion Evidence C source
  236 g: 40 calories, sodium 229 mg, potassium 625 mg, vitamin K 69 ug

What your body absorbs

• A dose-response meta-analysis of 75 RCTs with 1823 people found each extra millimole of dietary nitrate raised plasma nitrate and lowered systolic pressure by about 0.24 to 0.48 mmHg. — adults in 75 RCTs (n = 1823) Evidence A source
  Acute plasma nitrate +32.7 umol/L per mmol; systolic -0.28 mmHg (acute), -0.24 (short-term), -0.48 (medium-term) per mmol

What cooking and storage change

• In blinded food challenges, 6 of 11 people with celery allergy still reacted to celery cooked at 110 C for 15 minutes, and all 5 reacted to celery spice. — 12 patients with a history of celery allergy (n = 12) Evidence C source
  6/11 positive to cooked celery, 5/5 to celery spice

What it does to your health

• A meta-analysis of 10 RCTs with 511 adults found celery preparations lowered systolic and diastolic blood pressure. — adults in 10 RCTs (n = 511) Evidence A source
  Systolic SMD -1.0 (95% CI -1.85 to -0.14), diastolic SMD -0.93 (-1.54 to -0.33)
• A meta-analysis of 19 RCTs found inorganic nitrate lowered systolic pressure by 2.42 mmHg in healthy people and did not lower it in people with hypertension. — healthy and hypertensive adults in 19 trials (n = 19 trials) Evidence A source
  Healthy: systolic -2.42 mmHg (95% CI -4.28 to -0.57); hypertensive: -0.82 mmHg (-2.53 to 0.90), not significant

Safety, limits and interactions

• The American Academy of Pediatrics reports that infant nitrate poisoning still occurs from home-prepared vegetable foods. — infants Evidence E source
  Risk from home-prepared vegetable foods and well water, not from commercial infant foods
• NIH ODS states that in people who cannot excrete potassium normally, because of chronic kidney disease or drugs such as ACE inhibitors or potassium-sparing diuretics, even dietary potassium intakes below the Adequate Intake can cause hyperkalemia. This includes potassium from celery juice. — people with chronic kidney disease or taking ACE inhibitors or potassium-sparing diuretics Evidence E source
  Hyperkalemia possible even below the Adequate Intake, no threshold given
• NIH lists vegetables, especially green leafy vegetables, as a main food source of vitamin K and advises people on warfarin to keep their vitamin K intake consistent, since sudden changes can raise or lower the drug's effect. — people taking warfarin and similar vitamin K antagonist anticoagulants Evidence E source
  Sudden changes in vitamin K intake can raise or lower the anticoagulant effect

What people believe that the data does not support

• The EU refused a claim that celery helps the kidneys remove water from the body. — EU health claim assessment Evidence E source
  Status: non-authorized
• The EU also refused a claim that celery supports normal bladder function. — EU health claim assessment Evidence E source
  Status: non-authorized

Who this works differently for

• In an RCT of 97 mother-infant pairs, mothers who drank vegetable juices including celery juice for 1 month from 2 weeks postpartum had babies who later ate carrot-flavored cereal faster. — 97 lactating mothers and their infants (n = 97) Evidence B source
  Faster eating of carrot-flavored cereal after 1 month of early exposure

What is still unknown

• An umbrella review of 15 systematic reviews on 100% juice found no eligible meta-analysis for vegetable juice, so health claims for celery juice rest on no pooled evidence. — 15 systematic reviews with 51 meta-analyses of 100% juice (n = 15 reviews) Evidence C source
  No eligible meta-analysis for vegetable juice

The bottom line

A 1-cup glass of 236 g works out to about 40 calories, 229 mg sodium, 625 mg potassium and 69 micrograms of vitamin K. These US survey values match raw celery, so fiber lost in the juicer is not captured, and a 16 oz serving would double every number. The drainage story, that celery flushes water out, has been put to regulators. The EU refused a claim that celery helps the kidneys remove water, and another that it supports normal bladder function, which means the evidence was not sufficient when it was assessed. People with celery allergy should know that heat does not reliably remove the allergen, and juice is not heated at all. In blinded challenges, 6 of 11 celery-allergic patients still reacted to celery cooked at 110 C for 15 minutes, and all 5 tested reacted to celery spice. For infants, the American Academy of Pediatrics reports that nitrate poisoning still occurs from home-prepared vegetable foods. It does not name celery, which is a high-nitrate vegetable, and we hold no card on the age at which home-made vegetable juice becomes safe, so this page cannot say that home-made celery juice is safe for a baby. The vitamin K and potassium in a glass are not small, and a 16 oz serving doubles them. We hold no card on vitamin K with warfarin or on potassium with blood pressure medicines, so this page cannot say that a daily glass is safe for people taking them. We have no card on pregnancy. One trial did use celery juice. In 97 mother and infant pairs, mothers who drank vegetable juices including celery for a month after birth had babies who later ate carrot-flavored cereal faster, a flavor learning result with no health outcome attached.

Sources

1. celj-daily-r3-01 · dataset
   Celery juice, FNDDS code 75132100, fdc_id 2709811: Energy 17 KCAL, Sodium, Na 97 MG, Potassium, K 265 MG, Vitamin K (phylloquinone) 29.3 UG, Vitamin C, total ascorbic acid 3.1 MG, Fiber, total dietary 1.6 G per 100 g
   USDA FNDDS 2021-2023 · checked 2026-09-30
2. celj-daily-r3-10 · RCT
   From the 10 investigated celeriac cultivars, two cultivars elicited significantly different skin reactivity ("Anita": 5.0 [2.0-12.0] mm vs "Prinz": 7.0 [3.0-9.5] mm; P = .047). Moreover, "Anita" induced fewer symptoms after a controlled oral-celeriac challenge in 14 patient (P < .001).
   Clin Exp Allergy, 2018 · checked 2026-09-30
3. celj-daily-r3-02 · dataset
   Celery juice, fdc_id 2709811: 1 cup 236 g, Quantity not specified 118 g, 1 fl oz 30 g; 1 cup 236 g: Energy 40.1 KCAL, Sodium, Na 228.9 MG, Potassium, K 625.4 MG, Vitamin K (phylloquinone) 69.1 UG
   USDA FNDDS 2021-2023 · checked 2026-09-30
4. celj-daily-r3-04 · meta-analysis
   Our analysis of 75 RCTs involving 1823 participants revealed that per each millimole (mmol) increase in the administered NO3 dose, both acute (WMD: 32.7µmol/L; 95%CI: 26.1, 39.4) and chronic-term (WMD: 19.6µmol/L; 95%CI: 9.95, 29.3) plasma NO3 levels increased. Per each mmol increase in NO3 intake, a reduction in systolic BP levels was observed in the acute (WMD: -0.28mmHg; 95%CI: -0.40, -0.17), short-term (WMD: -0.24mmHg; 95%CI: -0.40, -0.07), and medium-term (WMD: -0.48mmHg; 95%CI: -0.71, -0.25) periods.
   Nutr J, 2025 · checked 2026-09-30
5. celj-daily-r3-09 · food challenge study
   Six out of 11 patients showed a positive DBPCFC to cooked celery and five out of five patients to celery spice.
   Allergy, 2002 · checked 2026-09-30
6. celj-daily-r3-03 · meta-analysis
   Our meta-analysis included ten randomized controlled studies with a total of 511 participants. The results demonstrated significant therapeutic effects of celery on systolic blood pressure (SMD: -1.0; 95% CI: -1.85 to -0.14), diastolic blood pressure (SMD: -0.93; 95% CI: -1.54 to -0.33)
   Front Nutr, 2025 · checked 2026-09-30
7. celj-daily-r3-05 · meta-analysis
   In the healthy population, inorganic nitrate lowered systolic blood pressure (-2.42 mmHg, 95% confidence intervals (CI) [-4.28, -0.57]; P = 0.01) ... However, in the hypertensive population, inorganic nitrates did not lower systolic blood pressure (-0.82 mmHg, 95% CI [-2.53, 0.90]; P = 0.35)
   Food Funct, 2023 · checked 2026-09-30
8. celj-daily-r3-11 · guideline
   However, reports of nitrate poisoning from home-prepared vegetable foods for infants continue to occur.
   Pediatrics, 2005 · checked 2026-09-30
9. sf-khyp-r1-celeryjuice-1 · agency advice
   However, in people with impaired urinary potassium excretion due to chronic kidney disease or the use of certain medications, such as angiotensin converting enzyme (ACE) inhibitors or potassium-sparing diuretics, even dietary potassium intakes below the AI can cause hyperkalemia.
   NIH Office of Dietary Supplements, Potassium Fact Sheet for Health Professionals · checked 2026-10-08
10. sf-vkw-r1-11 · agency advice
    Food sources of phylloquinone include vegetables, especially green leafy vegetables, vegetable oils, and some fruits. ...These drugs antagonize the activity of vitamin K, leading to the depletion of vitamin K-dependent clotting factors. People taking warfarin and similar anticoagulants need to maintain a consistent intake of vitamin K from food and supplements because sudden changes in vitamin K intakes can increase or decrease the anticoagulant effect [45].
    NIH Office of Dietary Supplements, Vitamin K Fact Sheet for Health Professionals · checked 2026-10-08
11. celj-daily-r3-07 · regulatory decision
    POL-HC-6622 Apium graveolens - common name : celery Used to enhance the renal elimination of water / "Used to facilitate the elimination functions of the organism" / "Used for the drainage of the organism" / "Stimulates the elimination function of the organism" / "Contributes to the functionary of the urinary tract" Non-authorised
    EU Register on nutrition and health claims, claim POL-HC-6622, snapshot 2026-09-21 · checked 2026-09-30
12. celj-daily-r3-08 · regulatory decision
    POL-HC-6620 Apium graveolens Support of normal bladder function Non-authorised
    EU Register on nutrition and health claims, claim POL-HC-6620, snapshot 2026-09-21 · checked 2026-09-30
13. celj-daily-r3-12 · RCT
    We conducted a randomized controlled study of 97 mother-infant dyads. Lactating mothers drank vegetable, beet, celery, and carrot juices for 1 mo beginning at 0.5, 1.5, or 2.5 mo postpartum or for 3 mo beginning at 0.5 mo postpartum.
    Am J Clin Nutr, 2017 · checked 2026-09-30
14. celj-daily-r3-06 · umbrella review
    No eligible studies for vegetable juice were found.
    Nutr Rev, 2025 · checked 2026-09-30