I have a green and white capsule. It says ethex on the green half and 30 mg on the white half. Any ideas?
No doubt about the markings. I have suspicions that someone put two different capsules together, but don't know for sure.
possible
Ethex makes a number of capsules with "ETHEX" printed on the green portion, most contain Pseudoephedrine & Brompheniramine. Ethex is very good about number coding their products and the Ethex website is easy to search by number code and "30" does not pop up with a product matching your description. Ethex marks "mg" on very few of their products. --- Ethex 30 matches a brown oblong tablet and a pink oval tablet.
There are some capsules on the market (not Ethex products) marked "30mg" on the white portion. If you really have an interest, you can post a pic of the capsule and I may be able to suggest what pills they were peiced together from.
Are there beads in the capsule?

can you double check the markings?