Can i smoke weed while taking 25mg atenelol (it helps with my svt) ?

Studies have shown that weed shares the same enzyme metabolism with some beta blockers including atenolol and blunted some of it's reducing of blood pressure. I assume that this would also affect atenolol's effect of preventing bouts of SVT.

There is increasing evidence that cannabis may worsen/ cause arrhythmias and would suggest stopping it completely at least for few months for a trial with regard to your SVT.

No. Marijuana is a psychoactive drug and will mess with your brain. MJ users are called stoners for good reason. An Evidence Based Review of Acute and Long-Term Effects of MJ...https://www.ncbi.nlm.nih.gov › articles › PMC3037578