Advice is often worth what you pay for it. If you take free advice from the
internet for something as vital as a medicine that may save your life you
are not putting much value on your life.

See a qualified travel physician who is familiar with recommendations for
the area you are visiting and follow his/her advice. There are specific
medicines that are recommended and not recommended for different areas so
the prophylactic recommended will vary depending on strain of malaria in the
area and evolved resistance to different medicines. Qualified practitioners
have access to this data.

My wife watched a healthy young man die of cerebral malaria. It is not
worth fooling around with.

Scott