Guide

Vitamin B12 is water-soluble, so the body generally flushes out what it doesn’t use through urine.

No, a true B12 overdose is extremely unlikely as it is water-soluble and excess is excreted.

No, B12 overdose is nearly impossible, but megadoses may cause mild side effects and some studies link high blood levels to increased mortality.

Yes, mixing creatine with protein powder is generally considered safe when both supplements are taken within their recommended serving sizes.

Yes, strength training builds muscle, boosting resting metabolism and calorie burn, while also directly shrinking fat cells for lasting weight loss support.

Losing 5 pounds in a week is possible on the scale, but the vast majority of that drop is usually water weight and glycogen, not body fat.

Losing 10 pounds in a week is possible but primarily results in water and muscle loss, not sustainable fat loss.

No, you should avoid kissing while a cold sore is present because the herpes simplex virus can spread even before the sore is visible.

Yes, you can get pimples on your scrotal skin, and they’re usually harmless — often from clogged pores, ingrown hairs, or mild folliculitis.

No, Viagra and generic sildenafil are prescription-only in the United States and not available over the counter, though 50mg is OTC in the UK.