l carnitine 1500 or 3000 Nutrex Research L-Carnitine 31 Servings | Liquid Shots, Stimulant Free L-CARNITINE-3000

Yes, in oral spray and sublingual formulations

As we all know, ten years later we are still all relying on the same low sensitivity B12 serum test and there is limited availability to other tests as recommended in the 2024 NICE Guideline, which are also not a good and reliable indicator of B12 deficiency without considering symptoms and risk factors

One small randomized controlled trial demonstrated that intravenous followed by oral thiamin therapy improved left ventricular ejection fraction in 30 CHF patients

[3] Vitamin B 12 deficiency in the US and the UK is estimated to occur in about 6 percent of those under the age of 60, and 20 percent of those over the age of 60