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Side-by-side dosing comparison The numbers are not directly comparable because the medications have different mechanisms

Difficulty: Challenging Climate: Warm and Cold at night Highest elevation: 3600 m / 11811 ft Campsite in Marampata Day 3: Marampata Choquequirao Playa Rosalinas Meals: 1 Breakfast, 1 Lunch, 1 Dinner & Snacks Approximate hiking time: ~4 hrs

And no, spirulina, mushrooms, or fermented foods are not reliable B12 sources despite what social media keeps repeating

Here's the honest answer: it varies

B12 shots can help you be healthier by adding more vitamins to your body