Your statement, if not properly comprehended and solely taken at a deterrent, can indirectly be even more dangerous to your body if u just avoid BP meds all together and/or don't address the issue period.
There may be potential for some meds to effect kidney function, I can't say for certain as I'm not a pharmaceutical expert, but I can for certain say that if your BP is high (140/90 and above) for a fairly decent amount of time the damage to kidneys will be substantially higher. This can be proven by the mere existence of BP meds and their vast use for individuals worldwide.
As for the meds themselves and my personal knowledge of them is as follows:
Lisinopril HCTZ, Atenolol, and Clonidine are all BP meds I've taken that have worked well.
Lisinopril HCTZ is an ACE inhibitor combined with a diuretic (aka water pill). This is the med I would recommend getting. I'm not sure of its availability w/o a script dom, but internationally it's easy to find. Can rush shipping and have in 2 weeks tops.
Atenolol is your basic beta-blocker. Acts on heart rate as well as BP.
Clonodine works a little differently then the meds listed above. Personally, I would avoid this med. It definitely has a physical effect on an individual. Makes you rather groggy. It worked well on lowering BP but I wouldn't recommend it to anyone. It's a strong med.