Get Vitamin B1 Thiamine Online

Thiamine is used to treat and prevent thiamine deficiency and its complications, including beriberi (affecting the nervous system and heart), Wernicke encephalopathy (a serious brain disorder), and Wernicke-Korsakoff syndrome. It is also used supportively in patients with chronic alcohol use disorder, malabsorption conditions, prolonged poor nutrition, or after bariatric surgery.

Symptoms can range from mild to severe and include fatigue, irritability, poor appetite, nausea, and abdominal discomfort. More serious deficiency can cause peripheral neuropathy (numbness, tingling, or weakness in the hands and feet), confusion, difficulty walking, rapid heart rate, and in severe cases, heart failure or encephalopathy. Symptoms may develop gradually over weeks to months.

Dosing depends on the severity of the deficiency and the underlying cause. Mild deficiency may be managed with standard oral doses of 50 to 100 mg daily, while serious conditions such as Wernicke encephalopathy typically require higher doses, sometimes given intravenously in a hospital setting. Your physician will recommend the appropriate dose and form based on your individual situation.

Thiamine is a water-soluble vitamin and is generally considered safe for long-term use at recommended doses. Because the body does not store large amounts of thiamine, ongoing supplementation may be necessary for people with chronic conditions that impair absorption or increase thiamine needs, such as alcohol use disorder or certain gastrointestinal diseases. Your provider can advise on the appropriate duration of treatment.

Many people meet their thiamine needs through diet. Good dietary sources include whole grains, legumes, nuts, pork, and fortified cereals. However, people with alcohol use disorder, malabsorption syndromes, very restrictive diets, or certain chronic illnesses may not absorb or retain enough thiamine from food alone and may need supplementation.

Thiamine supplements have a favorable safety profile and few significant drug interactions. However, alcohol consumption can substantially reduce thiamine absorption and accelerate its breakdown, which is why deficiency is common in people with heavy alcohol use. Some diuretics may also increase urinary thiamine loss. Always inform your provider about all medications, supplements, and alcohol use when being evaluated.

Doctronic uses an AI-powered evaluation to gather detailed information about your symptoms, medical history, and health goals. That information is then reviewed by a licensed physician who determines the most appropriate treatment plan for you. If a prescription is appropriate, it is sent to a pharmacy of your choice.

Yes. Doctronic connects you with fully licensed physicians who follow established clinical guidelines. All consultations are HIPAA-compliant, and every treatment decision is doctor-reviewed and audited to ensure your safety. Doctronic is available to adults 18 and older in any U.S. state.