good water baced lubes for toys use Water-Based Hypoallergenic Toy Lubricant, 8oz La Nua Water Based Lubricant
Description
It is available in oral forms (capsules, lozenges, chewable tablets, and dissolving tablets)
200iu Bottles: Mix 2mL (200 units) of cold bacteriostatic water into powder

Medications such as metformin (used for diabetes), which interferes with vitamin B12 absorption

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[PubMed Citation] Fujita Y, Fujino Y, Onodera M, Kikuchi S, Kikkawa T, Inoue Y, Niitsu H, Takahashi K, Endo S
Vitamin D and its major metabolites: serum levels after graded oral dosing in healthy men
