I’ve not bothered to weigh in about this because DDM has covered the medical opinion as well as I can. I will note that 1.25 mg of diazepam (Valium) is below any listed starting dose for an adult, so I wonder if there is more placebo affect than actual anti-anxiety affect. It’s also worth stating that generally side affects are also greatly linked to dose; the lower the dose the less likely/severe the side affects are.
Reality is that given the number of people who dive vs the prevalence of anxiety world wide I have no doubt there must be a subset of divers who are taking a benzodiazepine. It would appear that it is being done safely inspite of the increased risk. I also agree with the general notion that a well controlled behavioral health diagnosis should not preclude someone from diving or working as a dive professional.
Never the less, I also do not like the use of benzodiazepines in the treatment of anxiety. While I will prescribe a very few pills for a very short period of time in the setting of specific significant episodic stress/anxiety, I do not agree with the long term use of a benzo for anxiety. The risk of benzodiazepines is much greater when compared to the risk of other medications like SSRIs.
So, like many things in life, the answer is you have to make a decision for yourself and then live with the consequences. If someone asked me should they dive when taking Valium I would have a discussion about the risks like sedation, impaired motor skills, and impaired decision making that when diving can be catastrophic. I’d likely tell them I’d recommend not diving (or we can change meds so you can safely dive), but also acknowledge I’m being conservative and recognize not everyone would agree with my recommendation. For instance if you’ve been using this medication for years, likely driving without inicident for example, then the added risk when diving may be acceptable to you. It may not be acceptable to someone else. Such is life.