Don't need mo biotin: Biotin deficiency is very very rare. It is trendy right now to take if for hair and nails. Going beyond 100 mcg per day is not necessary and there is no evidence of benefit beyond this amount. Biotin is a water soluble B vitamin, so your body *probably* would simply pee out the extra.
You do not compare two things. The following guidelines apply to the superlative: 1-syllable adjectives: add-est to the adjective (plus the). 1  My sister is the tallest in our family. 2  Yesterday was the coldest day of the year so far.
For 25 of the 26 letters of the alphabet, the rule is simple: When a noun does not end in s, use apostrophe + s. The lollipop belonging to Elen a = Elena's lolllipop. The dictionary owned by the grammar whi z = The grammar whiz's dictionary.