TVR 350 from XtLabs is an injectable testosterone blend—350 mg per ml, split between 250 mg of testosterone enanthate and 100 mg of testosterone propionate. It comes in a 10 ml vial.

This mix uses two esters: 
enanthate, which sticks around for about a week or more, and propionate, which kicks in fast but fades in a day or two. The oil-based formula is made for intramuscular injections. It’s a bit like SustaPlex, but with just two esters instead of four, so you get less water retention and bloating.

People usually use TVR 350 for bulking or lean mass cycles. The quick propionate gives you a fast start, while the enanthate keeps your levels steady. You’ll notice better strength, faster recovery, and more muscle. It also works well with other XtLabs products—pair it with DecaPlex for size, TrenboPlex or Triple X for recomposition, or DianaPlex if you want rapid gains.

For dosing, 
men usually go with 350 to 700 mg per week. That means 1 to 2 ml, split into two or three injections a week—or just one bigger shot if you prefer. Typical cycles run 10 to 14 weeks. If you’re new to this, stick to 350 to 500 mg. You’ll need an aromatase inhibitor like Arimidex while on cycle, and proper post-cycle therapy with Clomid, Nolvadex, or HCG is a must.

What’s good about TVR 350? 
You get both a quick effect and steady results, and you won’t need as many injections as with pure propionate. The high concentration also means better value. Some users find it smoother than SustaPlex.

But there are downsides. 
TVR 350 aromatizes a lot, so you have to control estrogen. It’ll shut down your natural testosterone hard. The high dose per ml can sting, and, like any underground lab product, purity might be a concern.

Side effects? The usual suspects: estrogen-driven issues like gyno, water retention, and higher blood pressure—Arimidex helps here. On the androgenic side, watch for acne, hair loss, and aggression. Cardiovascular risks include changes in cholesterol and higher hematocrit. You need to keep an eye on your bloodwork and stick to proper post-cycle therapy.