Am      Em      Am      C       G       Am      Em      Am

[Verse] 
     Am                                                 
Im a young married man and Im tired of my life,
     Em
For lately I married an ailing old wife;
        Am                    C        G
She does nothing all day home she does sigh,
      Am                       Em         Am
And I wish to the Lord that I only could die.

[Chorus] 
Am
O Doctor, O Doctor, O dear Doctor John,
     Em
Your cod liver oil is so pure and so strong;
     Am                       C           G
Im a-fraid of me life, Ill go down in the soil,
      Am                         Em        Am
If me wife comes a-drinking your cod liver oil.

[Verse] 
       Am
Well, a friend of me own came to see me one day,
       Em
And he told me my wife was just pining away;
       Am                C              G
And he also told me that she would get strong,
   Am                      Em          Am
If I buy her a bottle from dear Doctor John.
 
[Chorus]
Am
O Doctor, O Doctor, O dear Doctor John,
     Em
Your cod liver oil is so pure and so strong;
     Am                       C           G
Im a-fraid of me life, Ill go down in the soil,
      Am                         Em        Am
If me wife comes a-drinking your cod liver oil.

[Verse] 
       Am
I bought her a bottle, twas just for a try,
       Em
And the way that she drank it, youd swear she was dry;
  Am                      C            G
I bought her another, it went just the same,
    Am                        Em          Am
And I know shes got cod liver oil on the brain.
 
[Chorus]  
Am
O Doctor, O Doctor, O dear Doctor John,
     Em
Your cod liver oil is so pure and so strong;
     Am                       C           G
Im a-fraid of me life, Ill go down in the soil,
      Am                         Em        Am
If me wife comes a-drinking your cod liver oil.

[Verse] 
    Am
My house it resembles a big doctors shop,
    Em
With bottles and bottles from bottom to top;
    Am                       C         G
And when in the morning the kettle do boil,
           Am                        Em        Am
You would swear we were singing bout cod liver oil.
 
[Chorus] 
Am
O Doctor, O Doctor, O dear Doctor John,
     Em
Your cod liver oil is so pure and so strong;
     Am                       C           G
Im a-fraid of me life, Ill go down in the soil,
      Am                         Em        Am
If me wife comes a-drinking your cod liver oil.