bartmaniac,
The Blood Drinkers is dubbed in English, altho there's a serenade scene which they did not bother to dub. No subtitles or audio features except for a commentary.
Except that the commentary does not discuss each scene but rather a background on the movie and the restoration taken for its DVD release. Pretty interesting that they (Americans) would restore a campy Tagalog movie (& the scenes that were deleted when the movie was edited for American theatrical/ drive-in release, from 110+ minutes to less than 85). Note that this movie comes from a time (mid-60s) when colored Tagalog movies were still the exception rather than the rule.
Other features include an interview with Eddie Romero (very informative, if you're into local flicks), drive-in intermission shorts, plus all those "Damn Bloody Trailers" for the complete Blood Collection! Fun-time at the drive-in!