I would assume that Harmala HCL means Harmine/Harmaline HCL mix.
There are a lot of other harmala alkaloids that could make a "Harmala" extract though.
Here are some guidelines for dosages.
Harmine and Harmaline have different personalities.
Personaly, Id say that the dosage for Harmine/Harmaline mix should be a bit lower than just Harmine since Harmaline is more "potent".