Vistra Magnesium Complex Plus B1 B6 B12 — Japanese-sourced Magnesium Oxide from Suntory Group, combined with B1 B6 B12 to reduce fatigue and support the nervous system. 30 capsules.
💊 Active: Magnesium Oxide + Thiamine (B1) + Pyridoxine (B6) + Cyanocobalamin (B12)
⏱️ Dosage: 1 capsule/day as directed on label
🍽️ Conditions: With or after food
📦 Pack: 30 capsules Vistra (Suntory Group, Japan)
⚡ Highlight: Japanese Magnesium Oxide + B1 B6 B12 for fatigue reduction and nerve support
🌡️ Storage: Below 30°C, away from moisture and direct sunlight
Vistra Magnesium Complex Plus B1 B6 B12 is a dietary supplement from Vistra brand under the Suntory Group, a Japanese conglomerate. This formula combines Japanese-sourced Magnesium Oxide with Thiamine (B1), Pyridoxine HCl (B6), and Cyanocobalamin (B12) — all of which support nervous system function, red blood cell formation, and energy metabolism. These B vitamins are essential coenzymes in processes that reduce fatigue.
📊 Key facts about Vistra Magnesium and B Vitamins:
Suntory is a Japanese conglomerate founded in 1899 with high manufacturing standards
Thiamine (B1) deficiency causes muscle weakness and nervous system impairment
Pyridoxine (B6) and Cyanocobalamin (B12) play key roles in red blood cell production and nervous system function
Magnesium Oxide has high elemental magnesium content per gram but slower absorption than citrate or glycinate forms
🏭 Produced by Vistra (Suntory Group), Japan. A Japanese supplement brand popular in Thailand.
⚠️ Those with kidney disease or taking regular medications should consult a doctor or pharmacist before use.
Medically reviewed by
ทีมเนื้อหา Intimo Life | Sources: NIH ODS, Mayo Clinic, Drugs.com
Last reviewed: 2026-05-19
About Vistra Magnesium Complex Plus B1 B6 B12
What is Vistra Magnesium Complex Plus B1 B6 B12?
Vistra Magnesium Complex Plus B1 B6 B12 is a supplement from Vistra under the Suntory Group, containing Japanese-sourced Magnesium Oxide with Vitamin B1 (Thiamine Mononitrate), B6 (Pyridoxine HCl), and B12 (Cyanocobalamin).
Magnesium mechanism: Magnesium is an essential macromineral that supports nerve signalling, muscle contraction, and ATP synthesis.
B1 B6 B12 mechanisms:
B1 (Thiamine): coenzyme in carbohydrate-to-energy metabolism, essential for the nervous system
B6 (Pyridoxine): involved in neurotransmitter synthesis and red blood cell production
B12 (Cyanocobalamin): essential for red blood cell formation and central nervous system function
What does Vistra Magnesium Complex help with?
Vistra Magnesium Complex Plus B1 B6 B12 supports:
Muscles: Magnesium supports normal muscle function, including reducing cramps and spasms
Nervous system: Magnesium, B1, B6, and B12 all support normal nerve signalling
Fatigue reduction: B1 B6 B12 support energy production from food, reducing physical and mental fatigue
Red blood cells: B12 contributes to normal red blood cell formation
Suitable for those wanting to support nervous system health and reduce daily fatigue.
How to take Vistra Magnesium Complex / Recommended dosage
How to take Vistra Magnesium Complex Plus B1 B6 B12 per label:
Adults: Take 1 capsule daily
Take with or after food
Drink at least 1 glass of water
Do not exceed the recommended dose on the label
Best time: Can be taken at any convenient time with food. Morning is good if you want the energy benefit from B complex; evening if you want the relaxation benefit from magnesium.
Side effects of Vistra Magnesium Complex
Vistra Magnesium Complex Plus B1 B6 B12 is generally well-tolerated. Possible side effects:
Gastrointestinal: Nausea, stomach discomfort, or loose stools at higher doses or on an empty stomach
Bright yellow urine: Normal result from B2 (Riboflavin) if present in the formula — not harmful
High long-term B6: Very high B6 intake from multiple sources over long periods may affect peripheral nervous system
At the recommended dose of 1 capsule daily, side effects are very unlikely for generally healthy adults.
Contraindications / Precautions
Precautions for taking Vistra Magnesium Complex Plus B1 B6 B12:
Those with kidney disease should consult a doctor first
Those taking Tetracycline or Fluoroquinolone antibiotics should allow 2 hours between doses
Those taking B12 from multiple sources should monitor total intake
Pregnant or breastfeeding women should consult a doctor before use
Keep out of reach of children
Vistra Magnesium compared to other magnesium supplements
All magnesium supplements at Intimo Life are oral — directly comparable:
Vistra Magnesium Complex Plus B1 B6 B12 (this product) — Japanese Magnesium Oxide + B1 B6 B12 for fatigue reduction. From Suntory. 30 capsules.
Quick summary: Choose Vistra when you want magnesium + B1 B6 B12 all-in-one, focused on fatigue reduction and nervous system support — especially if you need B12 for nervous system and red blood cells simultaneously. High standards from Suntory, Japan.
Can Vistra Magnesium be taken with other medications?
Key interactions to be aware of with Vistra Magnesium Complex Plus B1 B6 B12:
Tetracycline antibiotics: Magnesium binds with tetracyclines (e.g., doxycycline) forming a poorly-absorbed chelate, reducing blood levels — always allow 2 hours before or after the antibiotic
Fluoroquinolone antibiotics: e.g., ciprofloxacin, levofloxacin — absorption reduced when taken with magnesium; 2-hour gap required
Multivitamins with B1 B6 B12: Check whether your multivitamin already contains B1 B6 B12 to avoid excessive combined intake — especially B6 which has a clear tolerable upper intake level
Metformin: Long-term Metformin use may reduce intestinal B12 absorption — if combining for extended periods, have your doctor check B12 levels periodically
Antacids: Magnesium-containing antacids (e.g., magnesium hydroxide) may add to total magnesium intake — be cautious in those with kidney disease
Other magnesium supplements: Calculate total magnesium intake from all sources against the upper intake level recommendation
Consult a doctor or pharmacist if taking regular medications for personalised drug interaction assessment.
How quickly does Vistra Magnesium work?
Timeline for effects from Vistra Magnesium Complex Plus B1 B6 B12:
B Vitamins (energy): Water-soluble B vitamins absorb quickly — some feel more energised within 1–2 days of starting
Magnesium (muscle/nerve): Requires 2–4 weeks of consistent use before noticing muscle and nervous system improvements
B12 (red blood cells): Red blood cell effects take several weeks to become apparent
Daily consistent use is recommended for lasting results.
Where to buy Vistra Magnesium Complex Plus B1 B6 B12?
Where to buy Vistra Magnesium Complex Plus B1 B6 B12?
Order online at Intimo Life with nationwide delivery in Thailand within 1–3 business days. Discreet packaging — product name not shown on the parcel.
Vistra Magnesium Complex Plus B1 B6 B12 supports normal muscle and nervous system function, reduces fatigue, and B12 contributes to normal red blood cell formation. Suitable for those wanting to support their nervous system and reduce daily tiredness.
Take with food at any convenient time. Morning is good for the energy benefit from B complex; before bed is good for muscle relaxation from magnesium. Choose based on your personal goal.
Possible side effects at recommended dose include nausea, stomach discomfort, loose stools if taken on an empty stomach. Bright yellow urine from B vitamins is normal. For healthy adults taking 1 capsule daily, side effects are very unlikely.
Magnesium participates in ATP synthesis (cellular energy). Magnesium deficiency may increase fatigue. Vistra adds B1 B6 B12 which help reduce physical and mental fatigue through the energy metabolism pathway.
Vistra Magnesium Complex Plus B1 B6 B12 is specifically designed for fatigue reduction with its B1 B6 B12 + magnesium formula from Suntory, Japan. If you prefer an effervescent format, Interpharma Magnesium plus B Complex offers a similar B complex formula.
Be cautious with Tetracycline and Fluoroquinolone antibiotics (2-hour gap), magnesium-containing antacids, and diuretics. Those on Metformin should monitor B12 levels as long-term Metformin use may reduce B12 absorption.
For Vistra with B complex (which supports energy), morning with food is recommended as B vitamins may increase alertness. Taking before bed may make it harder to sleep for some people. Individual response may vary.
Excess magnesium from supplements may cause diarrhoea, nausea, and stomach discomfort. In severe cases with impaired kidney function, hypermagnesemia may occur. Very high long-term B6 intake may affect the peripheral nervous system. Follow the label recommendation of 1 capsule daily.
Vistra Magnesium uses Magnesium Oxide sourced from Japan, with Suntory maintaining quality control from the source. The key differentiator is the complete B1 B6 B12 combination for fatigue reduction and nervous system support. Compared to Blackmores (focuses on D3) or Interpharma (effervescent), Vistra suits those who want a swallowable capsule with a complete B1 B6 B12 formula.
Related Products
Products with the same active ingredient or treating the similar condition.
Blackmores Bio Magnesium Advance + D3 (50 tablets)
Coxium Glucosamine Sulfate 500mg Joint Supplement
Dr.PONG Magtein Magnesium L-Threonate (20 capsules)
