Storage:Protected from direct light and humidity at a temperature of 35.6-46.4F (2-8C)
References Institute of Medicine (US) Standing Committee on the Scientific Evaluation of Dietary Reference Intakes
You can also take a pill every day without any major side effects, unlike an injection that you do not need as often
Oral B12 supplements have to pass through the gut, and absorption can be limited especially if you have digestive issues, take certain medications like metformin or antacids, or simply have low stomach acid
The best months to have good weather in San Pedro de Atacama (Atacama Desert) are January, February, March, April, October, November and December
Additionally, use of proton pump inhibitors (PPIs) and diuretics (or "water pills") such as furosemide and hydrochlorothiazide can lead to magnesium deficiency over time