regex101: Drug name cleansing

Pro

1st Alternative[0-9]{1,4}[ ]{0,1}(mg)[\/]{0,1}(kg\/day|kg|day|d)

Character Class[0-9]{1,4}

{1,4}matches between 1 and 4 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[ ]{0,1}

{0,1}matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Group 1(mg)

mgthe literal text mg (case sensitive)

Character Class[\/]{0,1}

{0,1}matches at most one character from the set below:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2(kg\/day|kg|day|d)

1st Alternativekg\/day

kgthe literal text kg (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

daythe literal text day (case sensitive)

2nd Alternativekg

kgthe literal text kg (case sensitive)

3rd Alternativeday

daythe literal text day (case sensitive)

4th Alternatived

dthe literal d (100₁₀ / 144₈ / 64₁₆) (case sensitive)

2nd Alternative[0-9][ ]{0,1}(mcg|units|BID)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[ ]{0,1}

{0,1}matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Group 3(mcg|units|BID)

1st Alternativemcg

mcgthe literal text mcg (case sensitive)

2nd Alternativeunits

unitsthe literal text units (case sensitive)

3rd AlternativeBID

BIDthe literal text BID (case sensitive)

3rd Alternative([0-9][0-9.]){0,1}[0-9]{1,3}[%]

Group 4([0-9][0-9.]){0,1}

{0,1}repeats the group contents below at most once:

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[0-9.]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[%]

%the literal % (37₁₀ / 45₈ / 25₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

25 tokens

Regular Expression

[0-9]{1,4}[ ]{0,1}(mg)[\/]{0,1}(kg\/day|kg|day|d)|[0-9][ ]{0,1}(mcg|units|BID)|([0-9][0-9.]){0,1}[0-9]{1,3}[%]

New

10 mg/day
10 mg per kg
10 mg/d
10 mg/kg/day
10 mcg
10 units
10 mg BID
10 mg/day
0.075%  Lotion
5%

Extraction

10 mg/day
10 mg per kg
10 mg/d
10 mg/kg/day
10 mcg
10 units
10 mg BID
10 mg/day
0.075%  Lotion
5%