While both forms have their perks, injections trump tablets when it comes to detoxifying power
I have VERY, VERY oily skin with a LOT of sebum, but this one removes everything really well without clogging my pores

Appearance: White crystalline powder Odor and taste: Almost odorless, sour taste Arsenic (As): 2 ppm Assay: 98.0 % Heavy Metals: 10 ppm Identification (IR): Corresponds Identification (Lead Acetate): Positive Identification (Ninhydrin): Positive Iron (Fe): 10 ppm Loss on Drying: 0.5 % Melting Point: About 185 o C Optical Rotation: -21 - -11 o Residue on Ignition: 0.1 % Solubility: Soluble in water Solution: Clear solution BSE/TSE Free: BSE/TSE Free Country of Origin: Report G22010 Revision#2 SDS_24.pdf Download Certificate of Analysis Product Recommendations List Price $ 41 .45 Price $ 39 .95 You Save $ 1 .50 List Price $ 41 .45 Price $ 39 .95 You Save $ 1 .50 List Price $ 41 .45 Price $ 39 .95 You Save $ 1 .50 List Price $ 41 .45 Price $ 39 .95 You Save $ 1 .50 List Price $ 41 .45 Price $ 39 .95 You Save $ 1 .50 List Price $ 237 .50 Price $ 225 .75 You Save $ 11 .75 List Price $ 237 .50 Price $ 225 .75 You Save $ 11 .75 List Price $ 1427 .55 Price $ 1360 .00 You Save $ 67 .55 List Price $ 68 .40 Price $ 66 .99 You Save $ 1 .41 List Price $ 75 .50 Price $ 70 .99 You Save $ 4 .51

If you are low or deficient in B12, restoring healthy levels may improve fatigue and energy over time
Clin Endocrinol 72:334341 Mracek T, Gao D, Tzanavari T, Bao Y, Xiao X, Stocker C, Trayhurn P, Bing C (2010) Downregulation of zinc-a2-glycoprotein in adipose tissue and liver of obese ob/ob mice and by tumour necrosis factor-a in adipocytes