If it's a "Traditional IRA," it is tax deductible. Contribution limit per year is $5500, unless you're 55 where you can contribute up to $6500/yr. I don't understand how a Traditional IRA can't be tax deductible, then again I'm not a financial planner/advisor.
Personally, if it was me, if you can't deduct it from your taxes, I'd put my money into a Roth IRA instead, that way you won't get taxed on the gains or the distribution (when the time comes).
Or, better yet, if you have a Health Savings Account (HSA), I'd put money in that. HSA is an awesome place to put tax free money away for retirement medical expenses (Health, dental, vision). Your contribution is tax deductible, gains are not taxed, distribution isn't taxed (as long as it's used for qualified medical expenses like Copays, Coinsurance, deductibles, etc) and you don't lose it at the end of the year, like a flex spending account. Only bad thing is, you have to have a high deductible health plan to qualify to have an HSA.