Vitamin D is unique: your body makes it from sunlight, but only under specific conditions. In Europe, winter sun angles are too low to trigger production in most regions. For 5-6 months a year, sun exposure alone isn't enough.
Why it matters: vitamin D is involved in bone health, immune function, and mood regulation. Low levels are common in European winters, and supplementation is one of the few evidence-backed interventions worth doing year-round.
Vitamin D3 (cholecalciferol) is the form your body prefers. Daily doses of 1000-2000 IU are generally considered safe and effective. Higher doses exist, but start low and stay consistent — accumulation over time is the goal.
The practical approach: take vitamin D every single day from November through April, year-round if your winters are long or your sun exposure is low. Pair with breakfast (it's fat-soluble), and don't skip doses.
Tuttibear's vitamin D3 gummies are sized for daily winter use. Take one daily during dark months, and assess how you feel after 4 weeks of consistent intake. Most people notice mood and energy shifts.
Consult a healthcare professional if you take medication, are pregnant, or breastfeeding before starting any supplement routine.