Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
Of course you can use Horlicks but keep in mind that there is a drug commonly used in heart attack
which is isosorbide mononitrate
and causes a headache, so you can use analgesic
for some time, after few days body will adapt it but take care first of all to control blood pressure.
Hope I have answered your query. Let me know if I can assist you further.
Dr. Ram Kumar Chawla