Further to the above, Tren is an extremely potent compound, but its side effects (aggression, night sweats, cardiovascular strain, and potential neurotoxicity) can make it one of the harshest steroids out there. While it’s great for both cutting and bulking, it’s usually better reserved for more advanced users with specific goals. For breaking through a plateau, especially at 250mg per week, it likely isn't necessary. There are safer and more sustainable options that can provide excellent results.
Alternatives to Consider:
Test plus Increased Training Volume/Caloric Intake: Sometimes, a plateau is more about hitting a wall in training or under-eating than needing harsher gear. Consider increasing your training volume, refining your program, or bumping your calories by 200-300/day to reignite progress.
Test and Primo: Primo is mild, with low side effects, and pairs excellently with Test for steady strength and size gains without the harshness of Tren. You could do Test Cyp at 250mg/week and Primo at 400-600mg/week over 12 weeks.
Test and Deca: Deca is another good option, as mentioned by
@s.gentz, and will provide steady strength gains and joint support at the same time. 250mg/week of Test + 300-400mg/week of Deca would be effective.
Test and Anavar: Anavar is mild but highly effective for strength. A low-dose Test base (250 mg/week) with 25–50 mg/day of Anavar for 6–8 weeks could help break your plateau without the side effects of Tren.