I have been taking Biactin for 4 days. I don't like it much, but...

I have been taking Biactin for 4 days. I don't like it much, but if it's going to make me better, I guess I'll put up with it. I have been too sick - 3 months with different infections. So, I feel like I am going to be better with this drug,....but, yes the taste in my mouth is horrible, I am very irritable, little jittery...and in the beginning my head was booming...now, the headaches are not too bad. I am also quite tired. Don't like it...but, if it's going to work finally...I will be relieved.