To my knowledge,
there is no reason why Castor Oil Packs could be unsafe.

Eliminate from your diet all processed foods, and all concentrated sweeteners (sugar), and increase consumption of water, and unrefined foods.

The only salt consumed should be unrefined Sea Salt , naturally reach in magnesium (magnesium sulfate).
You can also take Magnesium sulfate, 1teaspoon or 1/2 teaspoon a day with water. Or good quality mineral water rich in magnesium.

Enema is a great way to cleanse body and blood.

Spirit

Garlic is also very safe to take, just make sure it is a pure product with no artificial or unnecessary additives .

I just happened to notice this question on my search if castor oil packs are safe for pregnancy. I am ttc and have been using the castor oil pack quite frequently. It has helped with my digestion and elimination and have been told by holistic practioners of its healing capabilities. Problem is, my period started 8 days early and has not been normal, alot of clotting. I called my dr who promises to call me back, but my dh swears its from using the hot castor oil pack. Do you agree? Is is safe if you're ttc?

thanks.