Quail: the human research is about the egg, not the bird

Almost everything measured in people under the word quail is a supplement made from the egg, and it was tested with zinc in the tablet. In a randomized trial of 40 patients with seasonal allergic rhinitis, adding oral quail egg and zinc tablets to a mometasone nasal spray for four weeks reduced nasal itching, sneezing and total nasal symptom scores more than the spray alone. More of those patients kept good control without rescue medication. Both groups stayed on the steroid spray, so the tablets were tested on top of prescribed treatment and not in place of it. The abstract gives no size for that difference, the comparison was open against spray alone rather than against a dummy tablet, and the authors ask for a larger study. The whole clinical literature behind the idea is five reports with 40 to 180 participants each, found after screening 294 records, with no pooled estimate and several reports coming from the same product line. One of the five was a single-arm open trial in 77 adults with mild intermittent rhinitis, where peak nasal inspiratory flow rose from baseline 30 minutes after a single dose (p = 0.002). That trial had no control group and no blinding, so ordinary variation and expectation sit inside the result. The bird itself is absent from that clinical literature. What is on record for the meat sits under safety: coturnism, a poisoning tied mainly to wild migratory quail that cooking does not prevent, and Listeria in 22.4% of the quail samples in one Iranian retail survey.

The numbers, per 3.5 oz (100 g)

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

What a real portion looks like

• In the trials, each tablet held 42 mg of quail egg homogenate and 0.75 mg of zinc, or 30 mg and 0.53 mg in one brand. People took 1 to 6 tablets a day for a few days to over a year, about a month on average. — trials of three proprietary quail egg + zinc tablets (SniZtop, Narivent, Ovix) in allergic rhinitis and related allergies (n = 5 reports) Evidence B source
  42 mg quail egg homogenate + 0.75 mg zinc per tablet (SniZtop, Narivent) or 30 mg + 0.53 mg (Ovix); 1 to 6 tablets a day; a few days to over a year, about one month on average; average daily quail egg homogenate about 84 mg

What cooking and storage change

• Cooking does not make a toxic quail safe, and smell or taste does not identify one, so preparation is no defense against coturnism. — patients with quail poisoning described in a clinical review of coturnism Evidence D source
  No cooking method detoxifies an affected bird; symptoms start 1 to 9 hours after the bird is eaten

What it does to your health

• Adding oral quail egg and zinc tablets to a mometasone nasal spray for 4 weeks cut nasal itching, sneezing and total nasal symptom scores further than the spray alone in 40 patients with seasonal allergic rhinitis. — patients with seasonal allergic rhinitis randomized to mometasone nasal spray for four weeks or the same topical corticosteroid therapy plus oral quail egg and zinc tablets (n = 40) Evidence B source
  Greater reduction in nasal itching, sneezing and total nasal symptom scores; more participants with good rhinitis control and no rescue medication
• The whole clinical evidence for quail egg supplements in allergic rhinitis is 5 reports with 40 to 180 participants each, found after screening 294 records. — five clinical reports on quail egg-based supplements in allergic rhinitis, participant numbers ranging from 40 to 180 (median 77) (n = 5 reports) Evidence B source
  Five clinical reports identified from 294 records screened, 40 to 180 participants each (median 77), with no pooled estimate
• In an open single-arm trial of 77 adults with mild intermittent allergic rhinitis, peak nasal inspiratory flow rose significantly 30 minutes after one dose of a quail egg and zinc supplement. — Adult patients (n = 77), aged 18- 60 years, with mild, intermittent AR (n = 77) Evidence C source
  Peak nasal inspiratory flow significantly increased from baseline at 30 min (p = 0.002); symptom scores fell from 15 min

Safety, limits and interactions

• The US upper limit for zinc is 40 mg a day for adults and 4 to 34 mg for children by age. Taking 50 mg or more for weeks can block copper absorption, weaken immune function and lower HDL cholesterol. — adults, infants, children and adolescents (US Food and Nutrition Board ULs) Evidence E source
  UL 40 mg zinc a day for adults, 4 to 34 mg for infants, children and adolescents by age; 50 mg or more for weeks can inhibit copper absorption, reduce immune function and lower HDL cholesterol
• Zinc can cut the absorption of quinolone and tetracycline antibiotics, and the drug the absorption of zinc. ODS advises taking the antibiotic at least 2 hours before or 4 to 6 hours after a zinc supplement. — people taking quinolone or tetracycline antibiotics with a zinc supplement Evidence E source
  Zinc and the antibiotic can block each other's absorption; take the antibiotic at least 2 hours before or 4 to 6 hours after zinc
• In an open single-arm trial of 77 adults with mild hay fever who used a quail egg and zinc supplement for 7 days, the only adverse events were a cough and a muscle strain, one person each. — Adult patients (n = 77), aged 18- 60 years, with mild, intermittent AR (n = 77) Evidence C source
  Treatment-emergent adverse events: cough (1 patient) and muscle strain (1 patient) over 7 days
• A 2022 toxicology review ties coturnism mainly to the wild European migratory quail eaten around the autumn migration. It describes the illness as a toxic muscle injury with acute rhabdomyolysis. — human poisoning reports after eating toxic bird species, mainly European migratory quail Evidence D source
  Toxicity mainly in the European migratory quail subspecies, around the autumn migration; coturnism is a toxic myopathy with acute rhabdomyolysis
• Pooled across 15 international studies, Salmonella was found in 2.09% of quail eggs and Escherichia coli in 10.38%, with wide uncertainty and very high heterogeneity. — 15 international studies of quail eggs published 2000 to 2025, plus 125 eggs sampled in Lima (n = 15 studies) Evidence C source
  Salmonella pooled prevalence 2.09% (95% CI 0.00-7.75); E. coli pooled prevalence 10.38% (95% CI 2.34-22.63); I2 above 94%
• In a survey of 1107 raw meat samples in Iran, Listeria species were found in 26 of 116 quail meat samples, which is 22.4% and second only to buffalo meat. — 1,107 samples of various raw meats from randomly selected retail butcher shops in Iran, July 2010 to November 2011 (n = 116 quail samples) Evidence C source
  Listeria spp. in 22.4% of quail meat samples; across all species 19.1% of the 141 isolates were L. monocytogenes
• Quail egg allergy can exist on its own, in a patient who passed an oral food challenge with hen's egg white. — one adult patient with quail egg allergy (n = 1) Evidence D source
  Allergic reaction to quail egg with no reaction to hen's egg white on oral food challenge
• In 3 patients allergic to bird meat, skin tests were positive to chicken, turkey, dove and quail yet negative to egg, including birds they had never eaten. — 3 patients who reported allergic reactions to several avian meats but denied reactions to eating eggs (n = 3) Evidence D source
  Skin tests positive to chicken, turkey, dove and quail meat and negative to egg; IgE bound proteins of similar molecular weight across avian meats
• Eating quail can cause coturnism, a food poisoning that presents as rhabdomyolysis and reached the renal ward in this reported case. — one patient admitted with rhabdomyolysis after eating quails (n = 1) Evidence D source
  Rhabdomyolysis attributed to coturnism

Who this works differently for

• A 6-year-old girl who could eat hen's eggs had repeated vomiting and pallor after cooked quail egg. In a blinded hospital challenge one fried quail egg brought vomiting, pallor and lethargy after 160 minutes and needed intravenous fluids. — a 6-year-old girl in Japan who tolerated raw hen's egg (n = 1) Evidence D source
  Food protein-induced enterocolitis syndrome to cooked quail egg: nausea, repetitive vomiting, pallor and lethargy 160 minutes after one fried quail egg (9 g), treated with intravenous saline
• A second report describes a 7-year-old girl who vomited repeatedly 3 to 4 hours after heated quail egg yet ate chicken egg without trouble. The authors list two earlier children, aged 3 and 6, with the same reaction to quail egg. — a 7-year-old Japanese girl with FPIES to quail egg and no reaction to chicken egg (n = 1) Evidence D source
  Repetitive vomiting 3 to 4 hours after heated quail egg at ages 4 and 7; two earlier children (3 and 6 years) had repeated vomiting, pallor and lethargy 1 to 3 hours after quail egg
• Across the 5 reviewed clinical reports, side effects of quail egg supplements were rare, mild and transient, and the review states that people with egg allergy should avoid them. — participants of the five reviewed clinical reports on quail egg-based supplements (n = 5 reports) Evidence B source
  Side effects rare, mild and transient; contraindicated in egg allergy

The bottom line

The bird itself comes with a hazard that has its own name. Coturnism is a poisoning that follows eating quail, and in the case reported here it presented as rhabdomyolysis, the breakdown of muscle tissue, and reached a renal ward. A 2022 toxicology review ties coturnism mainly to the wild European migratory quail eaten around the autumn migration. A clinical review of the syndrome states that unusual smell or taste does not identify an affected bird, and that no cooking method makes one safe to eat. Preparation is no defense against it. Both of those are case-level reports, and the toxic principle behind coturnism has still not been identified. Raw quail meat carries the usual poultry risks, and one survey put it high on the list. Among 1107 raw meat samples from retail butcher shops in Iran between July 2010 and November 2011, Listeria species turned up in 26 of 116 quail samples, which is 22.4% and second only to buffalo meat. Most isolates across that survey were the non-pathogenic L. innocua. One country, one period, one retail channel. For the eggs, a meta-analysis of 15 international studies published from 2000 to 2025 put pooled Salmonella prevalence at 2.09% (95% CI 0.00 to 7.75) with heterogeneity of 96.6%, so that figure describes the literature more than it describes any one market. Allergy is where this page has most to say to a particular reader. The systematic review of quail egg supplements reports side effects as rare, mild and transient across five small short trials, which are trials too small and too brief to show a rare harm, and it says people with egg allergy should avoid the product. Quail egg allergy can also stand on its own. One reported patient reacted to quail egg and then passed an oral food challenge with hen egg white. Bird meat runs a separate track. In three patients described in 1999, skin tests were positive to chicken, turkey, dove and quail meat and negative to egg, including birds they had never eaten, which the authors put down to cross-reacting allergens. Children can react differently. Reports from Japan describe children aged 3 to 7 who ate hen egg without trouble but vomited repeatedly hours after cooked quail egg, a delayed gut reaction called food protein-induced enterocolitis syndrome. In one blinded hospital challenge, a single fried quail egg brought vomiting, pallor and lethargy in a 6-year-old girl, who needed intravenous fluids. Two absences are worth naming. We found no study of how well people absorb protein or minerals from quail meat or quail eggs, so the USDA table above is the whole of what this page can say about nutrients. We also found nothing on quail in pregnancy. The tablets themselves carry little zinc. Each held 0.75 mg, or 0.53 mg in one brand, and people took 1 to 6 a day, for about a month on average, so six tablets come to about 4.5 mg. The US upper limit for zinc is 40 mg a day for adults and 4 to 34 mg for children by age, and taking 50 mg or more for weeks can block copper absorption, weaken immune function and lower HDL cholesterol. Zinc and quinolone or tetracycline antibiotics block each other, so ODS advises taking the antibiotic at least 2 hours before or 4 to 6 hours after a zinc supplement. In the 77-adult trial the only adverse events over 7 days were one cough and one muscle strain. Some people took the tablets for over a year, and no trial here was large or long enough to show a rare harm.

Sources

1. hf2-qail-3 · systematic review
   Specifically, each tablet of SniZtop® and Narivent® contained 42 mg of quail egg homogenate and 0.75 mg of zinc, while each Ovix® tablet contained 30 mg of quail egg homogenate and 0.53 mg of zinc. The daily dosage ranged from one to six tablets, depending on symptom severity and the physician's assessment; the treatment duration ranged from a few days to over a year, with an average duration of approximately one month
   Nutrients, 2025 · checked 2026-10-08
2. qail-r4-10 · case report with clinical review
   Unusual smell or taste does not help in identifying toxic food, and cooking methods cannot detoxify a bird capable of causing the syndrome.
   CMAJ, 2004 · checked 2026-09-24
3. qail-r4-01 · randomized controlled trial
   Forty patients were enrolled. The mometasone + quail egg and zinc tablets group showed a greater reduction in nasal itching, sneezing and total nasal symptom scores than the mometasone nasal spray only group.
   J Laryngol Otol, 2023 · checked 2026-09-24
4. qail-r4-02 · systematic review of clinical trials in adults
   A total of 294 studies were initially identified, with five clinical reports meeting the inclusion criteria. Participant numbers ranged from 40 to 180 (median: 77), with a balanced gender ratio.
   Nutrients, 2025 · checked 2026-09-24
5. qail-r4-04 · single-arm open-label clinical trial
   Adult patients (n = 77), aged 18- 60 years, with mild, intermittent AR were enrolled in this single-arm, open-label trial...PNIF values (Visit 1) gradually increased from baseline (pre-treatment), with statistical significance first reached 30 min later (p = 0.002).
   J Diet Suppl, 2021 · checked 2026-09-24
6. hf2-qail-1 · agency fact sheet
   Doses of 50 mg of zinc or more over a period of weeks can inhibit copper absorption, reduce immune function, and lower high-density lipoprotein cholesterol levels; however, it is unlikely that a person would obtain this much zinc from food alone. The Tolerable Upper Intake Level for zinc is 40 mg for adults, and it ranges from 4 to 34 mg for infants, children, and adolescents, depending on age.
   NIH Office of Dietary Supplements, Zinc Fact Sheet for Health Professionals · checked 2026-10-08
7. hf2-qail-2 · agency fact sheet
   Both quinolone antibiotics (such as Cipro) and tetracycline antibiotics (such as Achromycin and Sumycin) might interact with zinc in the gastrointestinal tract, which could inhibit the absorption of both zinc and the antibiotic if they are taken at the same time [103,104]. Taking the antibiotic at least 2 hours before or 4 to 6 hours after the zinc supplement minimizes this interaction [103].
   NIH Office of Dietary Supplements, Zinc Fact Sheet for Health Professionals · checked 2026-10-08
8. hf2-qail-4 · single-arm open-label trial
   Adult patients (n = 77), aged 18- 60 years, with mild, intermittent AR were enrolled in this single-arm, open-label trial. ... Treatment-emergent adverse events were limited to cough and muscle strain (one patient each).
   J Diet Suppl, 2021 · checked 2026-10-08
9. hf2-qail-7 · narrative review
   Toxicity is primarily associated with the European subspecies of migratory quails and observed around autumn season during quail migratory seasons [ 18 , 19 ]. Consumption of these birds can cause a toxic myopathy associated with acute rhabdomyolysis termed coturnism . Symptoms include weakness, myalgias, muscle stiffness, and cramps.
   Yeung KA, Chai PR, Russell BL, Erickson TB. Avian Toxins and Poisoning Mechanisms. J Med Toxicol, 2022;18(4) · checked 2026-10-08
10. qail-r4-05 · meta-analysis of prevalence surveys
    Salmonella spp. was absent locally (95% CrI: 0-1.52), consistent with the low global pooled prevalence of 2.09% (95% CI: 0.00-7.75), although high heterogeneity was observed (I2 = 96.6%, p < 0.0001).
    Prev Vet Med, 2026 · checked 2026-09-24
11. qail-r4-06 · cross-sectional prevalence survey
    The highest prevalence of Listeria was found in raw buffalo meat samples (7 of 24 samples; 29.2%) followed by quail meat (26 of 116 samples; 22.4%), partridge meat (13 of 74 samples; 17.6%), and chicken meat (27 of 160 samples; 16.9%).
    J Food Prot, 2012 · checked 2026-09-24
12. qail-r4-07 · case report in a single patient
    This paper describes a rare patient with quail egg allergy, which manifested no allergic reactions after oral food challenge with hen's egg white.
    Iran J Allergy Asthma Immunol, 2020 · checked 2026-09-24
13. qail-r4-08 · case report in three patients
    Skin tests were positive in all 3 patients to chicken, turkey, dove, quail, and yellow fever vaccine and negative to egg...Patients allergic to one bird meat may be allergic to others, including game birds, probably because of cross-reacting allergens.
    J Allergy Clin Immunol, 1999 · checked 2026-09-24
14. qail-r4-09 · case report in a single patient
    We report an unusual case of rhabdomyolysis due to coturnism (food poisoning caused by eating quails).
    NDT Plus, 2011 · checked 2026-09-24
15. hf2-qail-5 · case report
    The patient was a 6-year-old girl who visited the hospital with a 3-year history of repetitive vomiting and pallor 2 hours after eating cooked quail’s egg. ... Nausea, repetitive vomiting, pallor, and lethargy began 160 minutes after ingestion of quail’s egg and were treated with intravenous saline solution.
    J Investig Allergol Clin Immunol, 2017 · checked 2026-10-08
16. hf2-qail-6 · case report
    The patient had a history of repetitive vomiting about 3-4 hours after eating heated quail egg when she was 4 and 7 years old. She had never experienced an allergic reaction after ingesting chicken egg ... Two cases of children with FPIES to quail egg but not to chicken egg were reported in Cyprus and Japan [3,4]. The patients were 3 and 6 years old, and their symptoms included repeated vomiting, pallor, and lethargy 1 to 3 hours after ingesting quail egg.
    J Investig Allergol Clin Immunol, 2019 · checked 2026-10-08
17. qail-r4-03 · systematic review of clinical trials in adults
    The intervention was generally well tolerated, with side effects being rare, mild, and transient; however, QES should be avoided in patients with egg allergies.
    Nutrients, 2025 · checked 2026-09-24