Monday Mstery

Pleased to say I am feeling somewhat more lively this week as I don't have to waste mental energy on chasing up the slow supply of medical items, one of which I cannot be without for more than a few minutes. Last week I showed this close view



which was correctly identified by Adrian, Wilma and Ragged Robin as part of



a bubble pack of pills. In this case capsules of Sodium Bicarbonate which were prescribed by a renal consultant to help with reducing the amount of Potassium I absorb from food. My thanks to all who made a guess.

This week I have a full view of



what? What is it and what is / was it commonly used for? If you would like to make a guess please leave it in the comments. They will be revealed, with the answer, next Monday.