Have a google and do some research yourself before you make any decisions. It’s certainly not something to go into blindly, if it’s your best option then that’s what you will have to do but it is very invasive and entering an IVA means agreeing to a strict set of rules on spending.
You also have to pay to enter an IVA, on average that costs about £5000ish. Some practitioners you have to pay upfront, some will deduct from your monthly payment (but means payment will be higher), you can get quotes on prices for your situation.
Most IVA’s have a windfall clause so if you got a bonus at work, an unexpected inheritance, you’d have to pay that amount, you can’t keep it. If your income increases then you have to declare that, and your payments will be adjusted.
You’re not able to just apply for further credit during your IVA either, again, you need permission. Whether that’s for a sofa or a car, you need permission.
Details of your IVA are also on a public register.
As I say if it’s your only and best option then go for it, but make sure you understand fully what it is first.