B-Complex Vitamins: Energy & Metabolism
The role of B vitamins in energy production and nervous system function.
Pharmacist's Note
Information below supports education and safer decision-making but does not replace one-on-one clinical advice.
Feeling constantly drained even after resting? The eight B vitamins — including B1 (thiamine), B2 (riboflavin), B6, B12, and folate — are the workforce that converts the food you eat into usable energy and keeps your nervous system running properly.
Why consistency matters
Most B vitamins are water-soluble: your body uses what it needs and passes out the rest, storing very little. That means regular intake from foods like whole grains, eggs, beans, green vegetables, meat, and fish is important. Prolonged stress, heavy alcohol use, and some medicines (including metformin and long-term antacids) can deplete B vitamins faster.
B12: the one to watch
Vitamin B12 comes almost entirely from animal foods, so strict vegetarians and vegans often need a supplement. Older adults also absorb B12 less efficiently. Deficiency can cause fatigue, numbness or tingling in the hands and feet, memory problems, and a type of anaemia — and nerve damage can become permanent if deficiency runs untreated for long.
Choosing a B-complex
A balanced B-complex with amounts close to daily requirements suits most people; very high-dose formulas are rarely necessary and B6 in excess can actually harm nerves over time. Bright yellow urine after a dose is harmless riboflavin.
Our pharmacists at Sadima Pharmacy can help you avoid unnecessary overlap between a B-complex, a multivitamin, and fortified foods.
Safety Reminder
Always check for interactions with your current medication and underlying conditions before starting a new supplement. Visit or message Sadima Pharmacy for personalized guidance.