About a week late ... but yesterday morning I started pulse 50. It is a metronidazole pulse, this time at the correct dosage (here in the UK, that is 3x400 mg per day). My last pulse was really the first metronidazole pulse and I inadvertently used half dose. Although I have been doing antibiotics for some years now, I shall remain mindful of our editor's recent advice to me, now that I have switched to metro; I shall remain cautious.I have just spoken of remaining cautious ... I should also try to remain hopeful too. Any novelty value in being disabled has long since worn off. There are barriers to nearly everything; whether that be booking a holiday or even just eating out.I haven't been taking any biotin for about 9 months. I shall take Sarah's advice and start biotin again. I'll place an order this very week with Bulk Supplements.G.