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increases iron absorption","scope":"procedure","source":{"url":"https://www.ncbi.nlm.nih.gov/sites/books/NBK127724.2/?report=printable","host":"ncbi.nlm.nih.gov","quote":"Since vitamin C may make iron more easily absorbed and used by the body, high doses of the vitamin are not recommended for patients with hemochromatosis (a condition in which the body takes up and stores more iron than it needs).","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}},{"id":"C5","text":"Check whether the patient takes anticancer drugs, because high-dose vitamin C combined with them may reduce their effect","scope":"procedure","source":{"url":"https://www.ncbi.nlm.nih.gov/sites/books/NBK127724.2/?report=printable","host":"ncbi.nlm.nih.gov","quote":"High-dose vitamin C, when combined with some anticancer drugs, may cause them to be less effective.","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}}],"checked_at":"2026-11-13","next_check_at":"2027-11-13","version":1},"red_flags":{"status":"ok","items":[{"id":"F1","text":"No screening for risk factors is offered before the infusion is booked","scope":"procedure","source":{"url":"https://www.ncbi.nlm.nih.gov/sites/books/NBK127724.2/?report=printable","host":"ncbi.nlm.nih.gov","quote":"Vitamin C has been shown to be safe when given to healthy volunteers and cancer patients at doses up to 1.5 g/kg, while screening out patients with certain risk factors who should avoid vitamin C.","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}},{"id":"F2","text":"An offer for long, repeated IV vitamin C courses over many weeks","scope":"procedure","source":{"url":"https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=f0b683f8-189b-4a3f-9ffe-f91df6d798b6&type=display","host":"dailymed.nlm.nih.gov","quote":"Ascorbic acid injection is not indicated for prolonged administration (the maximum recommended duration is one week) [see Dosage and Administration ( 2.1 ) ].","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}},{"id":"F3","text":"An offer of IV vitamin C for general deficiency without scurvy signs falls outside the labeled use","scope":"procedure","source":{"url":"https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=f0b683f8-189b-4a3f-9ffe-f91df6d798b6&type=display","host":"dailymed.nlm.nih.gov","quote":"Ascorbic acid injection is not indicated for the treatment of vitamin C deficiency that is not associated with signs and symptoms of scurvy.","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}}],"checked_at":"2026-11-13","next_check_at":"2027-11-13","version":1},"warning_signs":{"status":"ok","items":[{"id":"W1","text":"Rash, itching, hives, or facial swelling","urgency":"emergency","general":false,"source":{"url":"https://my.clevelandclinic.org/health/drugs/18746-vitamin-c-tablets","host":"my.clevelandclinic.org","quote":"Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}},{"id":"W2","text":"Blood in the urine","urgency":"contact_clinic","general":false,"source":{"url":"https://my.clevelandclinic.org/health/drugs/18746-vitamin-c-tablets","host":"my.clevelandclinic.org","quote":"Kidney stones—blood in the urine, pain or trouble passing urine, pain in the lower back or sides","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}},{"id":"W3","text":"Pain or trouble passing urine","urgency":"contact_clinic","general":false,"source":{"url":"https://my.clevelandclinic.org/health/drugs/18746-vitamin-c-tablets","host":"my.clevelandclinic.org","quote":"Kidney stones—blood in the urine, pain or trouble passing urine, pain in the lower back or sides","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}},{"id":"W4","text":"Pain in the lower back or sides","urgency":"contact_clinic","general":false,"source":{"url":"https://my.clevelandclinic.org/health/drugs/18746-vitamin-c-tablets","host":"my.clevelandclinic.org","quote":"Kidney stones—blood in the urine, pain or trouble passing urine, pain in the lower back or sides","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}}],"checked_at":"2026-11-13","next_check_at":"2027-11-13","version":1},"take_home":{"status":"ok","items":[{"id":"T1","text":"Home doctor needs the clinic's follow-up recommendations in a written discharge summary","document":"discharge summary","source":{"url":"https://sbuhb.nhs.wales/about-us/individual-patient-commissioning/ipc-folder/advice-on-accessing-treatment-abroad","host":"sbuhb.nhs.wales","quote":"When you have treatment abroad, you must ask the treatment provider for their follow-up recommendations documented within a written discharge summary in English.","tier":"tier1_medical","fetched_at":"2026-11-11","http_status":200}},{"id":"T2","text":"Ask for copies of all prescriptions before you leave","document":"prescription copies","source":{"url":"https://travelhealthpro.org.uk/news/699/travelling-abroad-for-treatment","host":"travelhealthpro.org.uk","quote":"Remember to ask for copies of all your treatment records, including prescriptions, scans and x-rays before you leave.","tier":"tier1_medical","fetched_at":"2026-11-11","http_status":200}},{"id":"T3","text":"Home doctor needs the dates for required blood tests and follow-up appointments","document":"written aftercare plan","source":{"url":"https://sbuhb.nhs.wales/about-us/individual-patient-commissioning/ipc-folder/advice-on-accessing-treatment-abroad","host":"sbuhb.nhs.wales","quote":"This should include any medication and doses, as well as any dates that blood tests and follow-up appointments must be carried out.","tier":"tier1_medical","fetched_at":"2026-11-11","http_status":200}}],"checked_at":"2026-11-13","next_check_at":"2027-11-13","version":1},"alternatives":{"status":"ok","items":[{"id":"A1","text":"You can take vitamin C by mouth","name":"Oral vitamin C supplements","source":{"url":"https://www.healthline.com/health/vitamin-c-injection","host":"healthline.com","quote":"Vitamin C injections are typically only used for correcting a vitamin C deficiency when oral supplements can’t be taken.","tier":"tier1_medical","fetched_at":"2026-11-12","http_status":200},"operation_id":null}],"checked_at":"2026-11-12","next_check_at":"2027-11-12","version":1},"technique_details":{"status":"ok","items":[{"id":"standard-dose-infusion","name":"Standard-dose infusion (about 7.5-15 g)","how_it_works":{"text":"Vitamin C is given through a vein, reaching higher blood levels","source":{"url":"https://www.cancer.gov/about-cancer/treatment/cam/patient/vitamin-c-pdq","host":"cancer.gov","quote":"When given by IV infusion, vitamin C can reach much higher levels in the blood than when it is taken by mouth.","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}},"recovery_daily":{"status":"missing","reason":"no_official_source"}},{"id":"high-dose-infusion","name":"High-dose infusion (25-75 g)","how_it_works":{"text":"Vitamin C is given through a vein, reaching higher blood levels","source":{"url":"https://www.cancer.gov/about-cancer/treatment/cam/patient/vitamin-c-pdq","host":"cancer.gov","quote":"When given by IV infusion, vitamin C can reach much higher levels in the blood than when it is taken by mouth.","tier":"tier1_medical","fetched_at":"2026-11-13","http_status":200}},"recovery_daily":{"status":"missing","reason":"no_official_source"}},{"id":"vitamin-c-multi-nutrient","name":"Vitamin C in multi-nutrient (Myers-type) infusion","how_it_works":{"text":"The infusion delivers vitamin C into a vein over time","source":{"url":"https://www.mskcc.org/cancer-care/patient-education/medications/adult/ascorbic-acid","host":"mskcc.org","quote":"It is given as an infusion into a vein over a period of time after being added to fluids.","tier":"tier1_medical","fetched_at":"2026-11-12","http_status":200}},"recovery_daily":{"status":"missing","reason":"no_official_source"}}],"checked_at":"2026-11-13","next_check_at":"2027-11-13","version":1}}},"hrefLanguages":[{"rel":"alternate","hreflang":"ru","language":"ru","href":"https://ru.bookimed.com/clinics/country=portugaliya/city=porto/procedure=vnutrivennaya-terapiya-vitaminom-s/"}],"offerFilters":{"offer_count":0,"price_filter":{"from":0,"to":0,"avg":0}},"rendersOffersList":false,"fewClinics":true,"topCountriesCount":0}