The food advice that Gromph baenre gave you in your last post titled “What kinda food is the best?” was very good advice.

I have no problem finding curly endive, and escarole in most of my local grocery stores. A few of the stores in my area also carry dandelion greens.

Regarding your current diet-
Legumes are known oxalates (lima beans and green beans fall into this category) and the iceberg lettuce has very low nutritional value. In addition to having a moderate (lima) and high (green beans) oxalic acid level, the lima beans have a terrible ‘negative’ Ca:P ratio and the green beans also have a very poor Ca:P ratio and may actually have a negative ratio if you are feeding raw rather than frozen. Your uro is probably not getting the calcium he needs with the poor Ca:P ratios and the little calcium he does get is very possibly being tied up by the oxalates. Although none of these items are bad when used sparingly, a long term diet with these items as staples could lead to very disastrous results.

Try some of the foods that GB recommended as you should be able to find some if not most of the items he mentioned.

It has not been proven that calcium supplements can be broken down and used by uromastyx so I would not rely on this in place of the proper diet I mentioned in my last post.

The only calcium supplement that is speculated to work is calcium D3. Some believe that calcium D3 is utilized by insectivores more readily then herbivores- I am one of those people with this belief. Some believe that D3 is only beneficial when uva is provided and some believe that it is not beneficial at all while others believe that it can be utilized by all reptiles. The latter does not seem to be the majority.

I use calcium D3 sparingly (can be toxic and lead to same symptoms as MBD) in addition to a healthy diet of items that have a balanced (2:1) Ca:P ratio. I also supplement with uva light.

Collard greens belong to the Brassicaceae family (genus brassica) which members also include broccoli, cabbage, kale, brussel sprouts, turnip greens….. Mustard greens are also a member of this family.

Although I use collard greens very sparingly, I caution the use of any plant from this family as they are known phytochemical plants. The primary chemical produced is Glucosinolates most of which in this group (brassica) produce a product which can effect thyroid function. The glucosinalates in this family release 3-4 primary products that are found (some with all 3) in quite a few species of this family. One of these products found in mustard greens: thiocyanates- inhibit the iodine uptake by the thyroid. Turnip greens also have a fair portion of this same product but about half of that of mustard. Without going into too much more detail…. Most members of the brassica family produce at least three types of products from glucosinalates which effect thyroid function. Feeding large amount of these items can lead to gout and a variety of other diseases.
In addition to being goitrogenic, a few members of this family also produce a measureable amount of oxalates. Collard and mustard both are considered oxalate food items with mustard having the greater level.

On the positive side…. Most of the items in this group have a terrific Ca:P ratio and are packed with vitamins and minerals. Due to the positive benefits, I picked a few items which I felt had the least negative drawbacks when balanced with the positive. The items that I use sparingly from this group are collard greens, turnip greens, and bok choy. I do not use all three at once and when I do use these greens they are a very small percentage of the diet being offered. I do not feed any type of cabbage and no longer use mustard greens.

This is just what I do and not necessarily what needs to be done.

I would definitely follow what Uro_fan and GB have to say about uro’s diet. I wouldn’t use neither Romaine nor Iceburg lettuce for their staple foods unless, your uro’s dehydrated and only then would I put in a bit of Romaine. You don’t want your uro to "survive" on lettuce, you want it to "thrive" and "grow" with the proper diet.

"Some believe that D3 is only beneficial when uva is provided...."

correction:

Some believe that D3 is only beneficial when UVB is provided

Lately, I have been feeding small limited amounts of the orchard grass to some of my uromastyx to increase the fiber in their diet. The Mazuri Iguana diet I have been occasionally sprinkling on the uro’s food for the last half year or so has done a good job of increasing the fiber- I am just not sure how much I liked the idea of feeding it on a regular basis due to the ground soybean hulls and corn. I know Doug has recently started feeding the mazuri tortoise diet to his uros but that has an even higher soybean hull percentage. I will probably continue to use the Mazuri Iguana food sparingly but have started to add some of the orchard grass to boost the fiber a little more. Although I have not been feeding the grass for very long (and in limited portions), so far the uros seem to love it and no problems with the increase of fiber in the diet.