You cannot overdose on vitamin B12
For 300mcg: draw to the 12 unit mark (0.12ml)
Our Story Frequently Asked Questions Your provider will help you determine the best frequency for your B-12 shots depending on your unique health needs, diet, and current vitamin B-12 levels
Human studies using Lactobacillus as a probiotic have often demonstrated decreased body weight and/or body fat in a strain-dependent manner (for a review of human studies, see Crovesy et al., 2017 58 ), suggesting that the NNMTi-and-LD-mediated changes to Lactobacillus relative abundance may be critical to NNMTi-mediated weight loss
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Nausea (most common, especially during first 1 to 2 weeks of a new dose) Diarrhea or, just as often, constipation Vomiting (less common but more likely at 9 to 12 mg) Reduced appetite, food noise quieting down (this is the goal, not a side effect) Skin sensitivity (dysesthesia): tingling, prickly feeling, or sunburn-like skin